From: Michael Shigorin <mike@osdn.org.ua>
To: ALT Linux sysadmin discuss <sysadmins@lists.altlinux.org>
Subject: Re: [Sysadmins] ksoftirq 99% cpu load.
Date: Wed, 15 Oct 2008 12:50:52 +0300
Message-ID: <20081015095052.GZ30055@osdn.org.ua> (raw)
In-Reply-To: <200810150853.47735.ahtoh@pulnet.ru>
On Wed, Oct 15, 2008 at 08:53:47AM +0400, ahtoh@pulnet wrote:
> > > Видно, что все ядра поочередно учавствуют в обработке
> > > прерываний от одного устройства. Или я не прав?
> > А что- мануал (кстати, очень короткий) прочитать - не судьба?
> Мануал от чего?
irqbalance(1), вестимо. Хотя он действительно краток:
DESCRIPTION
The purpose of irqbalance is distribute hardware interrupts across pro-
cessors on a multiprocessor system in order to increase performance.
Поскольку распределять можно как динамически, так и статически,
то предположение о "eth0<->CPU0" этот мануал не опровергает.
Из наблюдаемого -- при работе irqbalance обработчики прерываний
потихоньку мигрируют по процессорам/ядрам, "выравнивая" значения
счётчиков на примерно сопоставимые величины.
--
---- WBR, Michael Shigorin <mike@altlinux.ru>
------ Linux.Kiev http://www.linux.kiev.ua/
next prev parent reply other threads:[~2008-10-15 9:50 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-14 9:48 ahtoh
2008-10-14 10:00 ` Led
2008-10-14 10:28 ` Max Ivanov
2008-10-14 11:06 ` Alex
2008-10-14 12:57 ` ahtoh
2008-10-14 13:35 ` Unsafe.ru
2008-10-14 13:45 ` ahtoh
2008-10-14 13:51 ` Konstantin A. Lepikhov
2008-10-14 14:13 ` ahtoh
2008-10-14 15:51 ` Konstantin A. Lepikhov
2008-10-14 16:21 ` ahtoh
2008-10-14 18:59 ` Led
2008-10-15 4:53 ` ahtoh
2008-10-15 9:50 ` Michael Shigorin [this message]
2008-10-15 12:31 ` ahtoh
2008-10-15 12:35 ` Led
2008-10-15 12:44 ` Serge
2008-10-19 14:36 ` Michael Shigorin
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