From: Sergey Vlasov <vsu@altlinux.ru> To: community@lists.altlinux.org Subject: Re: [Comm] проблемы с памятью? Date: Sat, 18 Apr 2009 15:48:30 +0400 Message-ID: <20090418114829.GA8745@atlas.home> (raw) In-Reply-To: <49DF4A8F.2090004@avangard.dn.ua> [-- Attachment #1: Type: text/plain, Size: 3298 bytes --] On Fri, Apr 10, 2009 at 04:33:03PM +0300, Roman Lesnichenko wrote: > С непонятной периодичностью возникают проблемы с шлюзом в результате > которых не работает езернет в локалку. Причем наружу работает. > Кто что может подсказать? > memtest ошибок не выдает. > > Apr 10 04:55:56 avangate kernel: ksoftirqd/0: page allocation failure. order:0, mode:0x20 Это типичная проблема в случае, если машина загружена главным образом маршрутизацией - ядро не успевает освободить достаточно памяти для использования обработчиками прерываний. Нужно увеличить значение /proc/sys/vm/min_free_kbytes (подбирается в зависимости от нагрузки, можно поднять до 16384, или даже больше, если сеть гигабитная). > Apr 10 04:55:56 avangate kernel: Pid: 4, comm: ksoftirqd/0 Not tainted 2.6.25-std-srv-alt8.M41.4 #1 > Apr 10 04:55:56 avangate kernel: [<c0272e85>] __alloc_pages+0x335/0x380 > Apr 10 04:55:56 avangate kernel: [<c0291e0f>] cache_alloc_refill+0x31f/0x570 > Apr 10 04:55:56 avangate kernel: [<c0291ac0>] kmem_cache_alloc+0x80/0xb0 > Apr 10 04:55:56 avangate kernel: [<f8b41c42>] nf_conntrack_alloc+0x42/0x170 [nf_conntrack] > Apr 10 04:55:56 avangate kernel: [<f8b427c3>] nf_conntrack_in+0x363/0x4e0 [nf_conntrack] > Apr 10 04:55:56 avangate kernel: [<c03d4709>] nf_hook_slow+0x59/0xe0 > Apr 10 04:55:56 avangate kernel: [<f8ae9250>] ipv4_conntrack_in+0x0/0x10 [nf_conntrack_ipv4] > Apr 10 04:55:56 avangate kernel: [<c03d4647>] nf_iterate+0x57/0x80 > Apr 10 04:55:56 avangate kernel: [<c03da340>] ip_rcv_finish+0x0/0x360 > Apr 10 04:55:56 avangate kernel: [<c03d4709>] nf_hook_slow+0x59/0xe0 > Apr 10 04:55:56 avangate kernel: [<c03da340>] ip_rcv_finish+0x0/0x360 > Apr 10 04:55:56 avangate kernel: [<c03dab88>] ip_rcv+0x208/0x290 > Apr 10 04:55:56 avangate kernel: [<c03da340>] ip_rcv_finish+0x0/0x360 > Apr 10 04:55:56 avangate kernel: [<c03da980>] ip_rcv+0x0/0x290 > Apr 10 04:55:56 avangate kernel: [<c03b8e35>] netif_receive_skb+0x405/0x4d0 > Apr 10 04:55:56 avangate kernel: [<c02295fa>] check_preempt_wakeup+0xba/0xc0 > Apr 10 04:55:56 avangate kernel: [<c03bb7f5>] process_backlog+0x75/0xe0 > Apr 10 04:55:56 avangate kernel: [<c03bb4ad>] net_rx_action+0xfd/0x1b0 > Apr 10 04:55:56 avangate kernel: [<c0231722>] __do_softirq+0x82/0x110 > Apr 10 04:55:56 avangate kernel: [<c0231805>] do_softirq+0x55/0x60 > Apr 10 04:55:56 avangate kernel: [<c0207a2a>] do_IRQ+0x4a/0xa0 > Apr 10 04:55:56 avangate kernel: [<c0205e13>] common_interrupt+0x23/0x30 > Apr 10 04:55:56 avangate kernel: [<c0227826>] finish_task_switch+0x26/0xb0 > Apr 10 04:55:56 avangate kernel: [<c0433c4b>] schedule+0x35b/0x7d0 > Apr 10 04:55:56 avangate kernel: [<c0231722>] __do_softirq+0x82/0x110 > Apr 10 04:55:56 avangate kernel: [<c02318c0>] ksoftirqd+0x0/0xd0 > Apr 10 04:55:56 avangate kernel: [<c023195a>] ksoftirqd+0x9a/0xd0 > Apr 10 04:55:56 avangate kernel: [<c023f7c2>] kthread+0x42/0x70 > Apr 10 04:55:56 avangate kernel: [<c023f780>] kthread+0x0/0x70 > Apr 10 04:55:56 avangate kernel: [<c02060b7>] kernel_thread_helper+0x7/0x10 > Apr 10 04:55:56 avangate kernel: ======================= Ещё на всякий случай посмотрите значения /proc/sys/net/netfilter/nf_conntrack_count и /proc/sys/net/netfilter/nf_conntrack_max (если его поднимали). [-- Attachment #2: Digital signature --] [-- Type: application/pgp-signature, Size: 197 bytes --]
next prev parent reply other threads:[~2009-04-18 11:48 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-04-10 13:33 Roman Lesnichenko 2009-04-16 21:10 ` Michael Shigorin 2009-04-16 22:40 ` Roman Lesnichenko 2009-04-17 5:47 ` Michael Shigorin 2009-04-17 6:15 ` Roman Lesnichenko 2009-04-17 16:11 ` Alexander Yereschenko 2009-04-17 18:54 ` Aleksander Gorohovski 2009-04-17 19:52 ` Alexander Yereschenko 2009-04-18 0:34 ` Alexey Borovskoy 2009-04-18 8:12 ` Yuri Bushmelev 2009-04-18 9:23 ` Alexander Yereschenko 2009-04-18 11:48 ` Sergey Vlasov [this message] 2009-04-21 14:00 ` Roman Lesnichenko 2009-04-24 9:29 ` Anton Gorlov
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