process chain тормозит

Alena__

Добрый день, коллеги

Имеется process chain которая стартует из BI

если коннектится к ECC центральной инстанции - то отрабатывает за 30 минут, а если application server - то работает часа 4, а потом приходится убивать (до конца еще ни разу не отработала, терпения не хватает) . Больше нигде подобных проблем не замечено.

есть идеи? спасибо

шрам

мало вводных данных...
но я бы начал с тестов нагрузки на сеть от DIA инстанций к центру, потом поглядел на поведение сервера блокировок с позиции DIA.

Alena__

а поподробнее?:)
сеть вся заутсорсена, так что придется постараться чтобы это организовать/

спасибо

шрам

Alena__ написал(а):

а поподробнее?:)
сеть вся заутсорсена, так что придется постараться чтобы это организовать/

спасибо

на счет сети, посоветовать сложно, но было дело - использовался NIPING
Note 500235 - Network Diagnosis with NIPING

вдогонку к вопросу сети и распределению нагрузки, наверное больше для инфо:
Note 986373 - RFC load distribution
Note 1112104 - Weighted round robin procedure
Note 593058 - New RFC load balancing procedure

на счет тестов ENQ:
Note 97760 - Enqueue: Performance and resource consuption
Note 13907 - System error in the block handler, overflow lock table
http://help.sap.com/saphelp_nw70/helpdata/en/f0/b57338788f4d72e10000009b38f8cf/content.htm
к сожалению, не нашел у себя инфы по параметрам оценки скорости работы ENQ

а вот... наткнулся на что-то этакое:

Цитата:

The execution of a single enqueue operation requires up to eight process switches including four TCP/IP
communication steps. This results in a time consumption of 1 ms (order of magnitude similar to SELECT
SINGLE) for one single enqueue.

центральная инстанция не AIX?

Alena__

спасибо огромное за подробныйответ, нет не АИХ - но протестирую как там в ноте указано вечером, может на Линуксе та же проблема

шрам

да, забыл вчера добавить..
еще пищу для размышлений может дать табличка: Queue Information в SM51.
тр. SM51 - GoTO - ServerName - Information - Queue Information

в этой табличке можно посмотреть - в какие типы процессов упирается DIA инстанция.

http://help.sap.com/saphelp_nw04/helpdata/en/d3/75d938c6fba936e10000000a114084/content.htm

Alena__

спасибо, посмотрела табличку - с enq все в порядке, да и вообще там все неплохо

еще один джоб нашелся который на диалоговой идет ровно в 10 раз дольше чем на центральной! Я грешила на данные, да и после патча Linux Kernel 3 / EhP6 в системе такое творилось что сложно было понять что дело именно в диалоговой инстанции

первый джоб - это большой селект, второй - большой апдейт, по трейсам - 92% времени база забирает в обоих случаях
чудеса

шрам

Alena__
Кхм... тут я уже не знаю даже - что посоветовать... что-то концептуальное.. думаю Вы и без меня знаете..
а конкретику, боюсь, можно советовать только по месту...после анализа...
иногда бывает, что проблема банальна, а иногда выливается в очень серьезные преобразования (кода, ландшфта, патчей и т.п.)

действительно очень странно, что при работе на CI и DI кардинально разнится время БД... чудес ведь не бывает. :wink:

я бы все-таки поглядел в сторону сетевой инфраструктуры....(при условии, что на DI нет задержек по памяти и процам) :roll:

при таком раскладе, вся разница между DI и CI, сугубо в сетевом расположении.

З.Ы.
тут с коллегой, подумали еще про один вариант - а что у Вас в ST02 на DIA инстанции творится? возможно дело в буферах?

Alena__

спасибо за ответ

буфера свежезатюненные САПом, но никакой особой радости это не принесло. свопится, конечно, но не критично. Я все-таки грешу на ОС, после апгрейда ядра Линукса с 2.6 на 3 с этой системой как-то сразу стало все проблематично, до этого года 3 на перформанс не смотрели

а есть у кого-нибудь новых линукс с 3м ядром? (Linux 3.0.51-0.7.9) Можете запостить дефолтовые параметры ядра (sysctl -А)? у меня есть подозрения что они сильно поменялись по сравнению с 2.6

спасибо

шрам

Вы хотите линуксов, их есть у меня... :mrgreen:

у меня системы на 3ем ядре, без всякой нагрузки, укладывались по памяти, пока не изменил параметр /sys/kernel/mm/transparent_hugepage/enabled, но сдается мне, что для Вас это пройденный этап. :roll:

вот смотрите что есть по ядрам:

Code:

Linux sap-bpm 2.6.32.12-0.7-default 
SUSE Linux Enterprise Server 11 (x86_64)
VERSION = 11
PATCHLEVEL = 1

kernel.sched_child_runs_first = 0
kernel.sched_min_granularity_ns = 8000000
kernel.sched_latency_ns = 40000000
kernel.sched_wakeup_granularity_ns = 10000000
kernel.sched_shares_ratelimit = 500000
kernel.sched_tunable_scaling = 1
kernel.sched_shares_thresh = 4
kernel.sched_features = 15834235
kernel.sched_migration_cost = 500000
kernel.sched_nr_migrate = 32
kernel.sched_time_avg = 1000
kernel.timer_migration = 1
kernel.sched_rt_period_us = 1000000
kernel.sched_rt_runtime_us = 950000
kernel.sched_compat_yield = 0
kernel.panic = 0
kernel.core_uses_pid = 0
kernel.core_pattern = core
kernel.core_pipe_limit = 0
kernel.tainted = 2147483648
kernel.latencytop = 0
kernel.real-root-dev = 0
kernel.print-fatal-signals = 0
kernel.ctrl-alt-del = 0
kernel.modprobe = /sbin/modprobe
kernel.modules_disabled = 0
kernel.hotplug =
kernel.acct = 4 2       30
kernel.sysrq = 176
kernel.cad_pid = 1
kernel.threads-max = 61128
kernel.unsupported = 2
kernel.random.poolsize = 4096
kernel.random.entropy_avail = 177
kernel.random.read_wakeup_threshold = 64
kernel.random.write_wakeup_threshold = 128
kernel.random.boot_id = f743aaec-0e90-4ba2-86e0-9ff766dad598
kernel.random.uuid = b802552c-23e5-4c65-8e50-74e4768eafef
kernel.overflowuid = 65534
kernel.overflowgid = 65534
kernel.pid_max = 65536
kernel.panic_on_oops = 1
kernel.printk = 1       4       1       7
kernel.printk_ratelimit = 5
kernel.printk_ratelimit_burst = 10
kernel.printk_delay = 0
kernel.ngroups_max = 65536
kernel.unknown_nmi_panic = 0
kernel.nmi_watchdog = 0
kernel.panic_on_unrecovered_nmi = 0
kernel.panic_on_io_nmi = 0
kernel.bootloader_type = 113
kernel.bootloader_version = 1
kernel.kstack_depth_to_print = 12
kernel.io_delay_type = 0
kernel.randomize_va_space = 1
kernel.suid_dumpable = 0
kernel.acpi_video_flags = 0
kernel.hung_task_panic = 0
kernel.hung_task_check_count = 4194304
kernel.hung_task_timeout_secs = 0
kernel.hung_task_warnings = 10
kernel.compat-log = 1
kernel.max_lock_depth = 1024
kernel.poweroff_cmd = /sbin/poweroff
kernel.keys.maxkeys = 200
kernel.keys.maxbytes = 20000
kernel.keys.root_maxkeys = 200
kernel.keys.root_maxbytes = 20000
kernel.keys.gc_delay = 300
kernel.slow-work.min-threads = 2
kernel.slow-work.max-threads = 64
kernel.slow-work.vslow-percentage = 50
kernel.perf_event_paranoid = 1
kernel.perf_event_mlock_kb = 512
kernel.perf_event_max_sample_rate = 100000
kernel.blk_iopoll = 1
kernel.sched_domain.cpu0.domain0.min_interval = 1
kernel.sched_domain.cpu0.domain0.max_interval = 4
kernel.sched_domain.cpu0.domain0.busy_idx = 2
kernel.sched_domain.cpu0.domain0.idle_idx = 1
kernel.sched_domain.cpu0.domain0.newidle_idx = 0
kernel.sched_domain.cpu0.domain0.wake_idx = 0
kernel.sched_domain.cpu0.domain0.forkexec_idx = 0
kernel.sched_domain.cpu0.domain0.busy_factor = 64
kernel.sched_domain.cpu0.domain0.imbalance_pct = 125
kernel.sched_domain.cpu0.domain0.cache_nice_tries = 1
kernel.sched_domain.cpu0.domain0.flags = 4143
kernel.sched_domain.cpu0.domain0.name = CPU
kernel.sched_domain.cpu1.domain0.min_interval = 1
kernel.sched_domain.cpu1.domain0.max_interval = 4
kernel.sched_domain.cpu1.domain0.busy_idx = 2
kernel.sched_domain.cpu1.domain0.idle_idx = 1
kernel.sched_domain.cpu1.domain0.newidle_idx = 0
kernel.sched_domain.cpu1.domain0.wake_idx = 0
kernel.sched_domain.cpu1.domain0.forkexec_idx = 0
kernel.sched_domain.cpu1.domain0.busy_factor = 64
kernel.sched_domain.cpu1.domain0.imbalance_pct = 125
kernel.sched_domain.cpu1.domain0.cache_nice_tries = 1
kernel.sched_domain.cpu1.domain0.flags = 4143
kernel.sched_domain.cpu1.domain0.name = CPU
kernel.vsyscall64 = 1
kernel.dump_after_notifier = 0
kernel.ostype = Linux
kernel.osrelease = 2.6.32.12-0.7-default
kernel.version = #1 SMP 2010-05-20 11:14:20 +0200
kernel.hostname = sap-bpm
kernel.domainname =
kernel.shmmax = 30064771072
kernel.shmall = 1152921504606846720
kernel.shmmni = 4096
kernel.msgmax = 65536
kernel.msgmni = 1913
kernel.msgmnb = 65536
kernel.sem = 1250       256000  100     8192
kernel.auto_msgmni = 1
kernel.kdb = 0
kernel.pty.max = 4096
kernel.pty.nr = 16
vm.overcommit_memory = 0
vm.panic_on_oom = 0
vm.oom_kill_allocating_task = 0
vm.oom_dump_tasks = 0
vm.overcommit_ratio = 50
vm.page-cluster = 3
vm.dirty_background_ratio = 10
vm.dirty_background_bytes = 0
vm.dirty_ratio = 40
vm.dirty_bytes = 0
vm.dirty_writeback_centisecs = 500
vm.dirty_expire_centisecs = 3000
vm.nr_pdflush_threads = 0
vm.swappiness = 60
vm.pagecache_limit_mb = 0
vm.pagecache_limit_ignore_dirty = 1
vm.nr_hugepages = 0
vm.hugetlb_shm_group = 0
vm.hugepages_treat_as_movable = 0
vm.nr_overcommit_hugepages = 0
vm.lowmem_reserve_ratio = 256   256     32
vm.drop_caches = 0
vm.min_free_kbytes = 8120
vm.percpu_pagelist_fraction = 0
vm.max_map_count = 1000000
vm.laptop_mode = 0
vm.block_dump = 0
vm.vfs_cache_pressure = 100
vm.legacy_va_layout = 0
vm.zone_reclaim_mode = 0
vm.min_unmapped_ratio = 1
vm.min_slab_ratio = 5
vm.stat_interval = 1
vm.mmap_min_addr = 65536
vm.numa_zonelist_order = default
vm.scan_unevictable_pages = 0
vm.heap-stack-gap = 1
vm.memory_failure_early_kill = 0
vm.memory_failure_recovery = 1
fs.inode-nr = 59201     12252
fs.inode-state = 59201  12252   0       0       0       0       0
fs.file-nr = 2368       0       6815744
fs.file-max = 6815744
fs.nr_open = 1048576
fs.dentry-state = 71350 61908   45      0       0       0
fs.overflowuid = 65534
fs.overflowgid = 65534
fs.leases-enable = 1
fs.dir-notify-enable = 1
fs.lease-break-time = 45
fs.aio-nr = 7052
fs.aio-max-nr = 1048576
fs.inotify.max_user_instances = 128
fs.inotify.max_user_watches = 65536
fs.inotify.max_queued_events = 16384
fs.epoll.max_user_watches = 801218
fs.suid_dumpable = 0
fs.quota.lookups = 0
fs.quota.drops = 0
fs.quota.reads = 0
fs.quota.writes = 0
fs.quota.cache_hits = 0
fs.quota.allocated_dquots = 0
fs.quota.free_dquots = 0
fs.quota.syncs = 2
fs.quota.warnings = 1
fs.mqueue.queues_max = 256
fs.mqueue.msg_max = 10
fs.mqueue.msgsize_max = 8192
fs.nfs.nlm_grace_period = 0
fs.nfs.nlm_timeout = 10
fs.nfs.nlm_udpport = 0
fs.nfs.nlm_tcpport = 0
fs.nfs.nsm_use_hostnames = 0
fs.nfs.nsm_local_state = 0
fs.nfs.nfs_callback_tcpport = 0
fs.nfs.idmap_cache_timeout = 600
fs.nfs.nfs_mountpoint_timeout = 500
fs.nfs.nfs_congestion_kb = 63360
debug.exception-trace = 1
dev.raid.speed_limit_min = 1000
dev.raid.speed_limit_max = 200000
dev.hpet.max-user-freq = 64
dev.scsi.logging_level = 0
dev.cdrom.info = CD-ROM information, Id: cdrom.c 3.20 2003/12/17
dev.cdrom.info =
dev.cdrom.info = drive name:            sr0
dev.cdrom.info = drive speed:           1
dev.cdrom.info = drive # of slots:      1
dev.cdrom.info = Can close tray:                1
dev.cdrom.info = Can open tray:         1
dev.cdrom.info = Can lock tray:         1
dev.cdrom.info = Can change speed:      1
dev.cdrom.info = Can select disk:       0
dev.cdrom.info = Can read multisession: 1
dev.cdrom.info = Can read MCN:          1
dev.cdrom.info = Reports media changed: 1
dev.cdrom.info = Can play audio:                1
dev.cdrom.info = Can write CD-R:                1
dev.cdrom.info = Can write CD-RW:       1
dev.cdrom.info = Can read DVD:          1
dev.cdrom.info = Can write DVD-R:       1
dev.cdrom.info = Can write DVD-RAM:     1
dev.cdrom.info = Can read MRW:          1
dev.cdrom.info = Can write MRW:         1
dev.cdrom.info = Can write RAM:         1
dev.cdrom.info =
dev.cdrom.info =
dev.cdrom.autoclose = 1
dev.cdrom.autoeject = 0
dev.cdrom.debug = 0
dev.cdrom.lock = 1
dev.cdrom.check_media = 0
dev.parport.default.timeslice = 200
dev.parport.default.spintime = 500
dev.parport.parport0.spintime = 500
dev.parport.parport0.base-addr = 888    0
dev.parport.parport0.irq = 7
dev.parport.parport0.dma = -1
dev.parport.parport0.modes = PCSPP,TRISTATE
dev.parport.parport0.devices.active = none
net.netfilter.nf_log.0 = NONE
net.netfilter.nf_log.1 = NONE
net.netfilter.nf_log.2 = NONE
net.netfilter.nf_log.3 = NONE
net.netfilter.nf_log.4 = NONE
net.netfilter.nf_log.5 = NONE
net.netfilter.nf_log.6 = NONE
net.netfilter.nf_log.7 = NONE
net.netfilter.nf_log.8 = NONE
net.netfilter.nf_log.9 = NONE
net.netfilter.nf_log.10 = NONE
net.netfilter.nf_log.11 = NONE
net.netfilter.nf_log.12 = NONE
net.core.somaxconn = 128
net.core.xfrm_aevent_etime = 10
net.core.xfrm_aevent_rseqth = 2
net.core.xfrm_larval_drop = 1
net.core.xfrm_acq_expires = 30
net.core.wmem_max = 1048576
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.rmem_default = 262144
net.core.dev_weight = 64
net.core.netdev_max_backlog = 1000
net.core.message_cost = 5
net.core.message_burst = 10
net.core.optmem_max = 20480
net.core.netdev_budget = 300
net.core.warnings = 1
net.ipv4.route.gc_thresh = 131072
net.ipv4.route.max_size = 2097152
net.ipv4.route.gc_min_interval = 0
net.ipv4.route.gc_min_interval_ms = 500
net.ipv4.route.gc_timeout = 300
net.ipv4.route.gc_interval = 60
net.ipv4.route.redirect_load = 5
net.ipv4.route.redirect_number = 9
net.ipv4.route.redirect_silence = 5120
net.ipv4.route.error_cost = 250
net.ipv4.route.error_burst = 1250
net.ipv4.route.gc_elasticity = 8
net.ipv4.route.mtu_expires = 600
net.ipv4.route.min_pmtu = 552
net.ipv4.route.min_adv_mss = 256
net.ipv4.route.secret_interval = 600
net.ipv4.neigh.default.mcast_solicit = 3
net.ipv4.neigh.default.ucast_solicit = 3
net.ipv4.neigh.default.app_solicit = 0
net.ipv4.neigh.default.retrans_time = 100
net.ipv4.neigh.default.base_reachable_time = 30
net.ipv4.neigh.default.delay_first_probe_time = 5
net.ipv4.neigh.default.gc_stale_time = 60
net.ipv4.neigh.default.unres_qlen = 3
net.ipv4.neigh.default.proxy_qlen = 64
net.ipv4.neigh.default.anycast_delay = 100
net.ipv4.neigh.default.proxy_delay = 80
net.ipv4.neigh.default.locktime = 100
net.ipv4.neigh.default.retrans_time_ms = 1000
net.ipv4.neigh.default.base_reachable_time_ms = 30000
net.ipv4.neigh.default.gc_interval = 30
net.ipv4.neigh.default.gc_thresh1 = 128
net.ipv4.neigh.default.gc_thresh2 = 512
net.ipv4.neigh.default.gc_thresh3 = 1024
net.ipv4.neigh.lo.mcast_solicit = 3
net.ipv4.neigh.lo.ucast_solicit = 3
net.ipv4.neigh.lo.app_solicit = 0
net.ipv4.neigh.lo.retrans_time = 100
net.ipv4.neigh.lo.base_reachable_time = 30
net.ipv4.neigh.lo.delay_first_probe_time = 5
net.ipv4.neigh.lo.gc_stale_time = 60
net.ipv4.neigh.lo.unres_qlen = 3
net.ipv4.neigh.lo.proxy_qlen = 64
net.ipv4.neigh.lo.anycast_delay = 100
net.ipv4.neigh.lo.proxy_delay = 80
net.ipv4.neigh.lo.locktime = 100
net.ipv4.neigh.lo.retrans_time_ms = 1000
net.ipv4.neigh.lo.base_reachable_time_ms = 30000
net.ipv4.neigh.eth0.mcast_solicit = 3
net.ipv4.neigh.eth0.ucast_solicit = 3
net.ipv4.neigh.eth0.app_solicit = 0
net.ipv4.neigh.eth0.retrans_time = 100
net.ipv4.neigh.eth0.base_reachable_time = 30
net.ipv4.neigh.eth0.delay_first_probe_time = 5
net.ipv4.neigh.eth0.gc_stale_time = 60
net.ipv4.neigh.eth0.unres_qlen = 3
net.ipv4.neigh.eth0.proxy_qlen = 64
net.ipv4.neigh.eth0.anycast_delay = 100
net.ipv4.neigh.eth0.proxy_delay = 80
net.ipv4.neigh.eth0.locktime = 100
net.ipv4.neigh.eth0.retrans_time_ms = 1000
net.ipv4.neigh.eth0.base_reachable_time_ms = 30000
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_retrans_collapse = 1
net.ipv4.ip_default_ttl = 64
net.ipv4.ip_no_pmtu_disc = 0
net.ipv4.ip_nonlocal_bind = 0
net.ipv4.tcp_syn_retries = 5
net.ipv4.tcp_synack_retries = 5
net.ipv4.tcp_max_orphans = 65536
net.ipv4.tcp_max_tw_buckets = 180000
net.ipv4.ip_dynaddr = 0
net.ipv4.tcp_keepalive_time = 7200
net.ipv4.tcp_keepalive_probes = 9
net.ipv4.tcp_keepalive_intvl = 75
net.ipv4.tcp_retries1 = 3
net.ipv4.tcp_retries2 = 15
net.ipv4.tcp_fin_timeout = 60
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_abort_on_overflow = 0
net.ipv4.tcp_stdurg = 0
net.ipv4.tcp_rfc1337 = 0
net.ipv4.tcp_max_syn_backlog = 1024
net.ipv4.ip_local_port_range = 9000     65500
net.ipv4.igmp_max_memberships = 20
net.ipv4.igmp_max_msf = 10
net.ipv4.inet_peer_threshold = 65664
net.ipv4.inet_peer_minttl = 120
net.ipv4.inet_peer_maxttl = 600
net.ipv4.inet_peer_gc_mintime = 10
net.ipv4.inet_peer_gc_maxtime = 120
net.ipv4.tcp_orphan_retries = 0
net.ipv4.tcp_fack = 1
net.ipv4.tcp_reordering = 3
net.ipv4.tcp_ecn = 0
net.ipv4.tcp_dsack = 1
net.ipv4.tcp_mem = 366720       488960  733440
net.ipv4.tcp_wmem = 4096        16384   4194304
net.ipv4.tcp_rmem = 4096        87380   4194304
net.ipv4.tcp_app_win = 31
net.ipv4.tcp_adv_win_scale = 2
net.ipv4.tcp_tw_reuse = 0
net.ipv4.tcp_frto = 2
net.ipv4.tcp_frto_response = 0
net.ipv4.tcp_low_latency = 0
net.ipv4.tcp_no_metrics_save = 0
net.ipv4.tcp_moderate_rcvbuf = 1
net.ipv4.tcp_tso_win_divisor = 3
net.ipv4.tcp_congestion_control = cubic
net.ipv4.tcp_abc = 0
net.ipv4.tcp_mtu_probing = 0
net.ipv4.tcp_base_mss = 512
net.ipv4.tcp_workaround_signed_windows = 0
net.ipv4.tcp_dma_copybreak = 4096
net.ipv4.tcp_slow_start_after_idle = 1
net.ipv4.cipso_cache_enable = 1
net.ipv4.cipso_cache_bucket_size = 10
net.ipv4.cipso_rbm_optfmt = 0
net.ipv4.cipso_rbm_strictvalid = 1
net.ipv4.tcp_available_congestion_control = cubic reno
net.ipv4.tcp_allowed_congestion_control = cubic reno
net.ipv4.tcp_max_ssthresh = 0
net.ipv4.udp_mem = 366720       488960  733440
net.ipv4.udp_rmem_min = 4096
net.ipv4.udp_wmem_min = 4096
net.ipv4.conf.all.forwarding = 0
net.ipv4.conf.all.mc_forwarding = 0
net.ipv4.conf.all.accept_redirects = 1
net.ipv4.conf.all.secure_redirects = 1
net.ipv4.conf.all.shared_media = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.all.send_redirects = 1
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.src_valid_mark = 0
net.ipv4.conf.all.proxy_arp = 0
net.ipv4.conf.all.medium_id = 0
net.ipv4.conf.all.bootp_relay = 0
net.ipv4.conf.all.log_martians = 0
net.ipv4.conf.all.tag = 0
net.ipv4.conf.all.arp_filter = 0
net.ipv4.conf.all.arp_announce = 0
net.ipv4.conf.all.arp_ignore = 0
net.ipv4.conf.all.arp_accept = 0
net.ipv4.conf.all.arp_notify = 0
net.ipv4.conf.all.disable_xfrm = 0
net.ipv4.conf.all.disable_policy = 0
net.ipv4.conf.all.force_igmp_version = 0
net.ipv4.conf.all.promote_secondaries = 1
net.ipv4.conf.default.forwarding = 0
net.ipv4.conf.default.mc_forwarding = 0
net.ipv4.conf.default.accept_redirects = 1
net.ipv4.conf.default.secure_redirects = 1
net.ipv4.conf.default.shared_media = 1
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.default.accept_source_route = 1
net.ipv4.conf.default.src_valid_mark = 0
net.ipv4.conf.default.proxy_arp = 0
net.ipv4.conf.default.medium_id = 0
net.ipv4.conf.default.bootp_relay = 0
net.ipv4.conf.default.log_martians = 0
net.ipv4.conf.default.tag = 0
net.ipv4.conf.default.arp_filter = 0
net.ipv4.conf.default.arp_announce = 0
net.ipv4.conf.default.arp_ignore = 0
net.ipv4.conf.default.arp_accept = 0
net.ipv4.conf.default.arp_notify = 0
net.ipv4.conf.default.disable_xfrm = 0
net.ipv4.conf.default.disable_policy = 0
net.ipv4.conf.default.force_igmp_version = 0
net.ipv4.conf.default.promote_secondaries = 1
net.ipv4.conf.lo.forwarding = 0
net.ipv4.conf.lo.mc_forwarding = 0
net.ipv4.conf.lo.accept_redirects = 1
net.ipv4.conf.lo.secure_redirects = 1
net.ipv4.conf.lo.shared_media = 1
net.ipv4.conf.lo.rp_filter = 0
net.ipv4.conf.lo.send_redirects = 1
net.ipv4.conf.lo.accept_source_route = 1
net.ipv4.conf.lo.src_valid_mark = 0
net.ipv4.conf.lo.proxy_arp = 0
net.ipv4.conf.lo.medium_id = 0
net.ipv4.conf.lo.bootp_relay = 0
net.ipv4.conf.lo.log_martians = 0
net.ipv4.conf.lo.tag = 0
net.ipv4.conf.lo.arp_filter = 0
net.ipv4.conf.lo.arp_announce = 0
net.ipv4.conf.lo.arp_ignore = 0
net.ipv4.conf.lo.arp_accept = 0
net.ipv4.conf.lo.arp_notify = 0
net.ipv4.conf.lo.disable_xfrm = 1
net.ipv4.conf.lo.disable_policy = 1
net.ipv4.conf.lo.force_igmp_version = 0
net.ipv4.conf.lo.promote_secondaries = 0
net.ipv4.conf.eth0.forwarding = 0
net.ipv4.conf.eth0.mc_forwarding = 0
net.ipv4.conf.eth0.accept_redirects = 1
net.ipv4.conf.eth0.secure_redirects = 1
net.ipv4.conf.eth0.shared_media = 1
net.ipv4.conf.eth0.rp_filter = 0
net.ipv4.conf.eth0.send_redirects = 1
net.ipv4.conf.eth0.accept_source_route = 1
net.ipv4.conf.eth0.src_valid_mark = 0
net.ipv4.conf.eth0.proxy_arp = 0
net.ipv4.conf.eth0.medium_id = 0
net.ipv4.conf.eth0.bootp_relay = 0
net.ipv4.conf.eth0.log_martians = 0
net.ipv4.conf.eth0.tag = 0
net.ipv4.conf.eth0.arp_filter = 0
net.ipv4.conf.eth0.arp_announce = 0
net.ipv4.conf.eth0.arp_ignore = 0
net.ipv4.conf.eth0.arp_accept = 0
net.ipv4.conf.eth0.arp_notify = 0
net.ipv4.conf.eth0.disable_xfrm = 0
net.ipv4.conf.eth0.disable_policy = 0
net.ipv4.conf.eth0.force_igmp_version = 0
net.ipv4.conf.eth0.promote_secondaries = 0
net.ipv4.ip_forward = 0
net.ipv4.xfrm4_gc_thresh = 1048576
net.ipv4.ipfrag_high_thresh = 262144
net.ipv4.ipfrag_low_thresh = 196608
net.ipv4.ipfrag_time = 30
net.ipv4.icmp_echo_ignore_all = 0
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses = 1
net.ipv4.icmp_errors_use_inbound_ifaddr = 0
net.ipv4.icmp_ratelimit = 1000
net.ipv4.icmp_ratemask = 6168
net.ipv4.rt_cache_rebuild_count = 4
net.ipv4.ipfrag_secret_interval = 600
net.ipv4.ipfrag_max_dist = 64
net.unix.max_dgram_qlen = 10
abi.vsyscall32 = 2
crypto.fips_enabled = 0
sunrpc.rpc_debug = 0
sunrpc.nfs_debug = 0
sunrpc.nfsd_debug = 0
sunrpc.nlm_debug = 0
sunrpc.transports = tcp 1048576
sunrpc.transports = udp 32768
sunrpc.udp_slot_table_entries = 16
sunrpc.tcp_slot_table_entries = 16
sunrpc.min_resvport = 665
sunrpc.max_resvport = 1023
sunrpc.tcp_fin_timeout = 15

Code:

Linux sap-ehp4 3.0.13-0.27-default
SUSE Linux Enterprise Server 11 (x86_64)
VERSION = 11
PATCHLEVEL = 2

kernel.sched_child_runs_first = 0
kernel.sched_min_granularity_ns = 750000
kernel.sched_latency_ns = 6000000
kernel.sched_wakeup_granularity_ns = 1000000
kernel.sched_tunable_scaling = 1
kernel.sched_migration_cost = 500000
kernel.sched_nr_migrate = 32
kernel.sched_time_avg = 1000
kernel.sched_shares_window = 10000000
kernel.timer_migration = 1
kernel.sched_rt_period_us = 1000000
kernel.sched_rt_runtime_us = 950000
kernel.sched_compat_yield = 0
kernel.sched_cfs_bandwidth_slice_us = 5000
kernel.panic = 0
kernel.core_uses_pid = 0
kernel.core_pattern = core
kernel.core_pipe_limit = 0
kernel.tainted = 2147483648
kernel.latencytop = 0
kernel.real-root-dev = 0
kernel.print-fatal-signals = 0
kernel.ctrl-alt-del = 0
kernel.ftrace_dump_on_oops = 0
kernel.modprobe = /sbin/modprobe
kernel.modules_disabled = 0
kernel.hotplug =
kernel.acct = 4 2       30
kernel.sysrq = 176
kernel.cad_pid = 1
kernel.threads-max = 125716
kernel.random.poolsize = 4096
kernel.random.entropy_avail = 4091
kernel.random.read_wakeup_threshold = 64
kernel.random.write_wakeup_threshold = 1024
kernel.random.boot_id = 97e0e3ff-7a55-4292-ba64-c7ce7f736bba
kernel.random.uuid = 0a8f949d-648e-46a6-9b00-6309015c1ca5
kernel.usermodehelper.bset = 4294967295 4294967295
kernel.usermodehelper.inheritable = 4294967295  4294967295
kernel.overflowuid = 65534
kernel.overflowgid = 65534
kernel.pid_max = 65536
kernel.unsupported = 2
kernel.panic_on_oops = 1
kernel.printk = 1       4       1       7
kernel.printk_ratelimit = 5
kernel.printk_ratelimit_burst = 10
kernel.printk_delay = 0
kernel.dmesg_restrict = 0
kernel.kptr_restrict = 0
kernel.ngroups_max = 65536
kernel.watchdog = 1
kernel.watchdog_thresh = 10
kernel.softlockup_panic = 0
kernel.nmi_watchdog = 1
kernel.unknown_nmi_panic = 0
kernel.panic_on_unrecovered_nmi = 0
kernel.panic_on_io_nmi = 0
kernel.bootloader_type = 113
kernel.bootloader_version = 1
kernel.kstack_depth_to_print = 12
kernel.io_delay_type = 0
kernel.randomize_va_space = 1
kernel.suid_dumpable = 0
kernel.acpi_video_flags = 0
kernel.hung_task_panic = 0
kernel.hung_task_check_count = 4194304
kernel.hung_task_timeout_secs = 0
kernel.hung_task_warnings = 10
kernel.compat-log = 1
kernel.max_lock_depth = 1024
kernel.poweroff_cmd = /sbin/poweroff
kernel.keys.maxkeys = 200
kernel.keys.maxbytes = 20000
kernel.keys.root_maxkeys = 200
kernel.keys.root_maxbytes = 20000
kernel.keys.gc_delay = 300
kernel.perf_event_paranoid = 1
kernel.perf_event_mlock_kb = 516
kernel.perf_event_max_sample_rate = 100000
kernel.blk_iopoll = 1
kernel.vsyscall64 = 1
kernel.dump_after_notifier = 0
kernel.ostype = Linux
kernel.osrelease = 3.0.13-0.27-default
kernel.version = #1 SMP Wed Feb 15 13:33:49 UTC 2012 (d73692b)
kernel.hostname = sap-ehp4
kernel.domainname =
kernel.shmmax = 42949672960
kernel.shmall = 1152921504606846720
kernel.shmmni = 4096
kernel.msgmax = 65536
kernel.msgmni = 3932
kernel.msgmnb = 65536
kernel.sem = 1250       256000  100     8192
kernel.auto_msgmni = 1
kernel.kdb = 0
kernel.pty.max = 4096
kernel.pty.nr = 1
vm.overcommit_memory = 0
vm.panic_on_oom = 0
vm.oom_kill_allocating_task = 0
vm.oom_dump_tasks = 1
vm.overcommit_ratio = 50
vm.page-cluster = 3
vm.dirty_background_ratio = 10
vm.dirty_background_bytes = 0
vm.dirty_ratio = 40
vm.dirty_bytes = 0
vm.dirty_writeback_centisecs = 500
vm.dirty_expire_centisecs = 3000
vm.nr_pdflush_threads = 0
vm.swappiness = 60
vm.pagecache_limit_mb = 0
vm.pagecache_limit_ignore_dirty = 1
vm.nr_hugepages = 0
vm.nr_hugepages_mempolicy = 0
vm.hugetlb_shm_group = 0
vm.hugepages_treat_as_movable = 0
vm.nr_overcommit_hugepages = 0
vm.lowmem_reserve_ratio = 256   256     32
vm.drop_caches = 0
vm.extfrag_threshold = 500
vm.min_free_kbytes = 67584
vm.percpu_pagelist_fraction = 0
vm.max_map_count = 1000000
vm.laptop_mode = 0
vm.block_dump = 0
vm.vfs_cache_pressure = 100
vm.legacy_va_layout = 0
vm.zone_reclaim_mode = 0
vm.min_unmapped_ratio = 1
vm.min_slab_ratio = 5
vm.stat_interval = 1
vm.mmap_min_addr = 65536
vm.numa_zonelist_order = default
vm.scan_unevictable_pages = 0
vm.memory_failure_early_kill = 0
vm.memory_failure_recovery = 1
fs.inode-nr = 33265     4
fs.inode-state = 33265  4       0       0       0       0       0
fs.file-nr = 6720       0       6815744
fs.file-max = 6815744
fs.nr_open = 1048576
fs.dentry-state = 80140 75824   45      0       0       0
fs.overflowuid = 65534
fs.overflowgid = 65534
fs.leases-enable = 1
fs.dir-notify-enable = 1
fs.lease-break-time = 45
fs.aio-nr = 24168
fs.aio-max-nr = 1048576
fs.inotify.max_user_instances = 128
fs.inotify.max_user_watches = 65536
fs.inotify.max_queued_events = 16384
fs.epoll.max_user_watches = 1647779
fs.suid_dumpable = 0
fs.pipe-max-size = 1048576
fs.quota.lookups = 0
fs.quota.drops = 0
fs.quota.reads = 0
fs.quota.writes = 0
fs.quota.cache_hits = 0
fs.quota.allocated_dquots = 0
fs.quota.free_dquots = 0
fs.quota.syncs = 2
fs.quota.warnings = 1
fs.mqueue.queues_max = 256
fs.mqueue.msg_max = 10
fs.mqueue.msgsize_max = 8192
fs.nfs.nlm_grace_period = 0
fs.nfs.nlm_timeout = 10
fs.nfs.nlm_udpport = 0
fs.nfs.nlm_tcpport = 0
fs.nfs.nsm_use_hostnames = 0
fs.nfs.nsm_local_state = 3
fs.nfs.nfs_callback_tcpport = 0
fs.nfs.idmap_cache_timeout = 600
fs.nfs.nfs_mountpoint_timeout = 500
fs.nfs.nfs_congestion_kb = 90816
debug.exception-trace = 1
debug.kprobes-optimization = 1
dev.raid.speed_limit_min = 1000
dev.raid.speed_limit_max = 200000
dev.hpet.max-user-freq = 64
dev.scsi.logging_level = 0
dev.cdrom.info = CD-ROM information, Id: cdrom.c 3.20 2003/12/17
dev.cdrom.info =
dev.cdrom.info = drive name:            sr0
dev.cdrom.info = drive speed:           1
dev.cdrom.info = drive # of slots:      1
dev.cdrom.info = Can close tray:                1
dev.cdrom.info = Can open tray:         1
dev.cdrom.info = Can lock tray:         1
dev.cdrom.info = Can change speed:      1
dev.cdrom.info = Can select disk:       0
dev.cdrom.info = Can read multisession: 1
dev.cdrom.info = Can read MCN:          1
dev.cdrom.info = Reports media changed: 1
dev.cdrom.info = Can play audio:                1
dev.cdrom.info = Can write CD-R:                1
dev.cdrom.info = Can write CD-RW:       1
dev.cdrom.info = Can read DVD:          1
dev.cdrom.info = Can write DVD-R:       1
dev.cdrom.info = Can write DVD-RAM:     1
dev.cdrom.info = Can read MRW:          1
dev.cdrom.info = Can write MRW:         1
dev.cdrom.info = Can write RAM:         1
dev.cdrom.info =
dev.cdrom.info =
dev.cdrom.autoclose = 1
dev.cdrom.autoeject = 0
dev.cdrom.debug = 0
dev.cdrom.lock = 1
dev.cdrom.check_media = 0
dev.parport.default.timeslice = 200
dev.parport.default.spintime = 500
dev.parport.parport0.spintime = 500
dev.parport.parport0.base-addr = 888    0
dev.parport.parport0.irq = 7
dev.parport.parport0.dma = -1
dev.parport.parport0.modes = PCSPP,TRISTATE
dev.parport.parport0.devices.active = none
net.netfilter.nf_log.0 = NONE
net.netfilter.nf_log.1 = NONE
net.netfilter.nf_log.2 = NONE
net.netfilter.nf_log.3 = NONE
net.netfilter.nf_log.4 = NONE
net.netfilter.nf_log.5 = NONE
net.netfilter.nf_log.6 = NONE
net.netfilter.nf_log.7 = NONE
net.netfilter.nf_log.8 = NONE
net.netfilter.nf_log.9 = NONE
net.netfilter.nf_log.10 = NONE
net.netfilter.nf_log.11 = NONE
net.netfilter.nf_log.12 = NONE
net.core.somaxconn = 128
net.core.xfrm_aevent_etime = 10
net.core.xfrm_aevent_rseqth = 2
net.core.xfrm_larval_drop = 1
net.core.xfrm_acq_expires = 30
net.core.wmem_max = 1048576
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.rmem_default = 262144
net.core.dev_weight = 64
net.core.netdev_max_backlog = 1000
net.core.bpf_jit_enable = 0
net.core.netdev_tstamp_prequeue = 1
net.core.message_cost = 5
net.core.message_burst = 10
net.core.optmem_max = 20480
net.core.rps_sock_flow_entries = 0
net.core.netdev_budget = 300
net.core.warnings = 1
net.ipv4.route.gc_thresh = 262144
net.ipv4.route.max_size = 4194304
net.ipv4.route.gc_min_interval = 0
net.ipv4.route.gc_min_interval_ms = 500
net.ipv4.route.gc_timeout = 300
net.ipv4.route.gc_interval = 60
net.ipv4.route.gc_interval = 60
net.ipv4.route.redirect_load = 5
net.ipv4.route.redirect_number = 9
net.ipv4.route.redirect_silence = 5120
net.ipv4.route.error_cost = 250
net.ipv4.route.error_burst = 1250
net.ipv4.route.gc_elasticity = 8
net.ipv4.route.mtu_expires = 600
net.ipv4.route.min_pmtu = 552
net.ipv4.route.min_adv_mss = 256
net.ipv4.neigh.default.mcast_solicit = 3
net.ipv4.neigh.default.ucast_solicit = 3
net.ipv4.neigh.default.app_solicit = 0
net.ipv4.neigh.default.retrans_time = 100
net.ipv4.neigh.default.base_reachable_time = 30
net.ipv4.neigh.default.delay_first_probe_time = 5
net.ipv4.neigh.default.gc_stale_time = 60
net.ipv4.neigh.default.unres_qlen = 3
net.ipv4.neigh.default.proxy_qlen = 64
net.ipv4.neigh.default.anycast_delay = 100
net.ipv4.neigh.default.proxy_delay = 80
net.ipv4.neigh.default.locktime = 100
net.ipv4.neigh.default.retrans_time_ms = 1000
net.ipv4.neigh.default.base_reachable_time_ms = 30000
net.ipv4.neigh.default.gc_interval = 30
net.ipv4.neigh.default.gc_thresh1 = 128
net.ipv4.neigh.default.gc_thresh2 = 512
net.ipv4.neigh.default.gc_thresh3 = 1024
net.ipv4.neigh.lo.mcast_solicit = 3
net.ipv4.neigh.lo.ucast_solicit = 3
net.ipv4.neigh.lo.app_solicit = 0
net.ipv4.neigh.lo.retrans_time = 100
net.ipv4.neigh.lo.base_reachable_time = 30
net.ipv4.neigh.lo.delay_first_probe_time = 5
net.ipv4.neigh.lo.gc_stale_time = 60
net.ipv4.neigh.lo.unres_qlen = 3
net.ipv4.neigh.lo.proxy_qlen = 64
net.ipv4.neigh.lo.anycast_delay = 100
net.ipv4.neigh.lo.proxy_delay = 80
net.ipv4.neigh.lo.locktime = 100
net.ipv4.neigh.lo.retrans_time_ms = 1000
net.ipv4.neigh.lo.base_reachable_time_ms = 30000
net.ipv4.neigh.eth1.mcast_solicit = 3
net.ipv4.neigh.eth1.ucast_solicit = 3
net.ipv4.neigh.eth1.app_solicit = 0
net.ipv4.neigh.eth1.retrans_time = 100
net.ipv4.neigh.eth1.base_reachable_time = 30
net.ipv4.neigh.eth1.delay_first_probe_time = 5
net.ipv4.neigh.eth1.gc_stale_time = 60
net.ipv4.neigh.eth1.unres_qlen = 3
net.ipv4.neigh.eth1.proxy_qlen = 64
net.ipv4.neigh.eth1.anycast_delay = 100
net.ipv4.neigh.eth1.proxy_delay = 80
net.ipv4.neigh.eth1.locktime = 100
net.ipv4.neigh.eth1.retrans_time_ms = 1000
net.ipv4.neigh.eth1.base_reachable_time_ms = 30000
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_retrans_collapse = 1
net.ipv4.ip_default_ttl = 64
net.ipv4.ip_no_pmtu_disc = 0
net.ipv4.ip_nonlocal_bind = 0
net.ipv4.tcp_syn_retries = 5
net.ipv4.tcp_synack_retries = 5
net.ipv4.tcp_max_orphans = 262144
net.ipv4.tcp_max_tw_buckets = 262144
net.ipv4.ip_dynaddr = 0
net.ipv4.tcp_keepalive_time = 7200
net.ipv4.tcp_keepalive_probes = 9
net.ipv4.tcp_keepalive_intvl = 75
net.ipv4.tcp_retries1 = 3
net.ipv4.tcp_retries2 = 15
net.ipv4.tcp_fin_timeout = 60
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_abort_on_overflow = 0
net.ipv4.tcp_stdurg = 0
net.ipv4.tcp_rfc1337 = 0
net.ipv4.tcp_max_syn_backlog = 2048
net.ipv4.ip_local_port_range = 9000     65500
net.ipv4.ip_local_reserved_ports =
net.ipv4.igmp_max_memberships = 20
net.ipv4.igmp_max_msf = 10
net.ipv4.inet_peer_threshold = 65664
net.ipv4.inet_peer_minttl = 120
net.ipv4.inet_peer_maxttl = 600
net.ipv4.inet_peer_gc_mintime = 10
net.ipv4.inet_peer_gc_maxtime = 120
net.ipv4.tcp_orphan_retries = 0
net.ipv4.tcp_fack = 1
net.ipv4.tcp_reordering = 3
net.ipv4.tcp_ecn = 0
net.ipv4.tcp_dsack = 1
net.ipv4.tcp_mem = 193569       258093  387138
net.ipv4.tcp_wmem = 4096        16384   4194304
net.ipv4.tcp_rmem = 4096        87380   4194304
net.ipv4.tcp_app_win = 31
net.ipv4.tcp_adv_win_scale = 2
net.ipv4.tcp_tw_reuse = 0
net.ipv4.tcp_frto = 2
net.ipv4.tcp_frto_response = 0
net.ipv4.tcp_low_latency = 0
net.ipv4.tcp_no_metrics_save = 0
net.ipv4.tcp_moderate_rcvbuf = 1
net.ipv4.tcp_tso_win_divisor = 3
net.ipv4.tcp_congestion_control = cubic
net.ipv4.tcp_abc = 0
net.ipv4.tcp_mtu_probing = 0
net.ipv4.tcp_base_mss = 512
net.ipv4.tcp_workaround_signed_windows = 0
net.ipv4.tcp_dma_copybreak = 4096
net.ipv4.tcp_slow_start_after_idle = 1
net.ipv4.cipso_cache_enable = 1
net.ipv4.cipso_cache_bucket_size = 10
net.ipv4.cipso_rbm_optfmt = 0
net.ipv4.cipso_rbm_strictvalid = 1
net.ipv4.tcp_available_congestion_control = cubic reno
net.ipv4.tcp_allowed_congestion_control = cubic reno
net.ipv4.tcp_max_ssthresh = 0
net.ipv4.tcp_cookie_size = 0
net.ipv4.tcp_thin_linear_timeouts = 0
net.ipv4.tcp_thin_dupack = 0
net.ipv4.udp_mem = 193569       258093  387138
net.ipv4.udp_rmem_min = 4096
net.ipv4.udp_wmem_min = 4096
net.ipv4.conf.all.forwarding = 0
net.ipv4.conf.all.mc_forwarding = 0
net.ipv4.conf.all.accept_redirects = 1
net.ipv4.conf.all.secure_redirects = 1
net.ipv4.conf.all.shared_media = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.all.send_redirects = 1
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.accept_local = 0
net.ipv4.conf.all.src_valid_mark = 0
net.ipv4.conf.all.proxy_arp = 0
net.ipv4.conf.all.medium_id = 0
net.ipv4.conf.all.bootp_relay = 0
net.ipv4.conf.all.log_martians = 0
net.ipv4.conf.all.tag = 0
net.ipv4.conf.all.arp_filter = 0
net.ipv4.conf.all.arp_announce = 0
net.ipv4.conf.all.arp_ignore = 0
net.ipv4.conf.all.arp_accept = 0
net.ipv4.conf.all.arp_notify = 0
net.ipv4.conf.all.proxy_arp_pvlan = 0
net.ipv4.conf.all.disable_xfrm = 0
net.ipv4.conf.all.disable_policy = 0
net.ipv4.conf.all.force_igmp_version = 0
net.ipv4.conf.all.promote_secondaries = 1
net.ipv4.conf.default.forwarding = 0
net.ipv4.conf.default.mc_forwarding = 0
net.ipv4.conf.default.accept_redirects = 1
net.ipv4.conf.default.secure_redirects = 1
net.ipv4.conf.default.shared_media = 1
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.default.accept_source_route = 1
net.ipv4.conf.default.accept_local = 0
net.ipv4.conf.default.src_valid_mark = 0
net.ipv4.conf.default.proxy_arp = 0
net.ipv4.conf.default.medium_id = 0
net.ipv4.conf.default.bootp_relay = 0
net.ipv4.conf.default.log_martians = 0
net.ipv4.conf.default.tag = 0
net.ipv4.conf.default.arp_filter = 0
net.ipv4.conf.default.arp_announce = 0
net.ipv4.conf.default.arp_ignore = 0
net.ipv4.conf.default.arp_accept = 0
net.ipv4.conf.default.arp_notify = 0
net.ipv4.conf.default.proxy_arp_pvlan = 0
net.ipv4.conf.default.disable_xfrm = 0
net.ipv4.conf.default.disable_policy = 0
net.ipv4.conf.default.force_igmp_version = 0
net.ipv4.conf.default.promote_secondaries = 1
net.ipv4.conf.lo.forwarding = 0
net.ipv4.conf.lo.mc_forwarding = 0
net.ipv4.conf.lo.accept_redirects = 1
net.ipv4.conf.lo.secure_redirects = 1
net.ipv4.conf.lo.shared_media = 1
net.ipv4.conf.lo.rp_filter = 0
net.ipv4.conf.lo.send_redirects = 1
net.ipv4.conf.lo.accept_source_route = 1
net.ipv4.conf.lo.accept_local = 0
net.ipv4.conf.lo.src_valid_mark = 0
net.ipv4.conf.lo.proxy_arp = 0
net.ipv4.conf.lo.medium_id = 0
net.ipv4.conf.lo.bootp_relay = 0
net.ipv4.conf.lo.log_martians = 0
net.ipv4.conf.lo.tag = 0
net.ipv4.conf.lo.arp_filter = 0
net.ipv4.conf.lo.arp_announce = 0
net.ipv4.conf.lo.arp_ignore = 0
net.ipv4.conf.lo.arp_accept = 0
net.ipv4.conf.lo.arp_notify = 0
net.ipv4.conf.lo.proxy_arp_pvlan = 0
net.ipv4.conf.lo.disable_xfrm = 1
net.ipv4.conf.lo.disable_policy = 1
net.ipv4.conf.lo.force_igmp_version = 0
net.ipv4.conf.lo.promote_secondaries = 0
net.ipv4.conf.eth1.forwarding = 0
net.ipv4.conf.eth1.mc_forwarding = 0
net.ipv4.conf.eth1.accept_redirects = 1
net.ipv4.conf.eth1.secure_redirects = 1
net.ipv4.conf.eth1.shared_media = 1
net.ipv4.conf.eth1.rp_filter = 0
net.ipv4.conf.eth1.send_redirects = 1
net.ipv4.conf.eth1.accept_source_route = 1
net.ipv4.conf.eth1.accept_local = 0
net.ipv4.conf.eth1.src_valid_mark = 0
net.ipv4.conf.eth1.proxy_arp = 0
net.ipv4.conf.eth1.medium_id = 0
net.ipv4.conf.eth1.bootp_relay = 0
net.ipv4.conf.eth1.log_martians = 0
net.ipv4.conf.eth1.tag = 0
net.ipv4.conf.eth1.arp_filter = 0
net.ipv4.conf.eth1.arp_announce = 0
net.ipv4.conf.eth1.arp_ignore = 0
net.ipv4.conf.eth1.arp_accept = 0
net.ipv4.conf.eth1.arp_notify = 0
net.ipv4.conf.eth1.proxy_arp_pvlan = 0
net.ipv4.conf.eth1.disable_xfrm = 0
net.ipv4.conf.eth1.disable_policy = 0
net.ipv4.conf.eth1.force_igmp_version = 0
net.ipv4.conf.eth1.promote_secondaries = 0
net.ipv4.ip_forward = 0
net.ipv4.xfrm4_gc_thresh = 2097152
net.ipv4.ipfrag_high_thresh = 262144
net.ipv4.ipfrag_low_thresh = 196608
net.ipv4.ipfrag_time = 30
net.ipv4.icmp_echo_ignore_all = 0
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses = 1
net.ipv4.icmp_errors_use_inbound_ifaddr = 0
net.ipv4.icmp_ratelimit = 1000
net.ipv4.icmp_ratemask = 6168
net.ipv4.rt_cache_rebuild_count = 4
net.ipv4.ping_group_range = 1   0
net.ipv4.ipfrag_secret_interval = 600
net.ipv4.ipfrag_max_dist = 64
net.unix.max_dgram_qlen = 10
abi.vsyscall32 = 2
crypto.fips_enabled = 0
sunrpc.rpc_debug = 0
sunrpc.nfs_debug = 0
sunrpc.nfsd_debug = 0
sunrpc.nlm_debug = 0
sunrpc.transports = tcp 1048576
sunrpc.transports = udp 32768
sunrpc.transports = tcp-bc 1048576
sunrpc.udp_slot_table_entries = 16
sunrpc.tcp_slot_table_entries = 16
sunrpc.min_resvport = 665
sunrpc.max_resvport = 1023
sunrpc.tcp_fin_timeout = 15
fscache.object_max_active = 64
fscache.operation_max_active = 32

Alena__

спасибо-спасибо огромное, теперь буду сравнивать :-)

/sys/kernel/mm/transparent_hugepage/enabled мы сделали never

Но зато применили ноту 1672954. Пока вроде неплохо все, и не надо "тащить" 20Гб для Oracle shadow processes, при саизинге серверов приложений про них как-то "забыли" и получили охрененных своп сразу после старта системы, Линукс бодренько за своп взялся и получилась загрузка CPU 100%:)

а по теме я нашла http://scn.sap.com/thread/1863189 (не совсем наша ситуация, но похоже), вот пытаюсь понять есть ли у нас interrupt coalescing и поменялось ли что-то после патча ОС. это особенно интересно делать, когда нет прямого доступа к ОС, только через САП :-)

еше нотка интересная - Note 1794178 - Network issues suspected on SQL Server systems. У нас хоть и Оракл, но много полезного все равно имеется в ноте

Alena__

если кому интересно как открылся ларчик - апдейт

во время патча оракла "умельцы" из саппорта БД как-то напортачили с переменными окружения и параметр SDU для клиента Оракла на аппл серверах - "потерялся". Параметр вернули, скорость обработки увеличилась в 36 раз

NIPING показывал что все почти хорошо, пришлось делать "пробу с нагрузкой"

а что б юзеры не плакали пока суд да дело - применили ноту 1488762 - Using a server group for BW extraction

Правила форума

process chain тормозит

Кто сейчас на конференции