From: Jeff Garzik <jgarzik@pobox.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Subject: interrupt cpu time accounting?
Date: Sun, 29 Aug 2004 16:42:16 -0400 [thread overview]
Message-ID: <41323FA8.80203@pobox.com> (raw)
Does the kernel scheduler notice when a CPU spends a lot of time doing
interrupt processing?
For many network configurations you get the best cache affinity, etc. if
you lock network interrupts to a single CPU. However, on a box with
high network load, that could mean that that CPU is spending more time
processing interrupts than doing Real Work(tm).
Will the scheduler "notice" this, and increasingly schedule processes
away from the interrupt-heavy CPU?
Jeff
next reply other threads:[~2004-08-29 20:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-29 20:42 Jeff Garzik [this message]
2004-08-29 21:15 ` interrupt cpu time accounting? Robert Love
2004-08-29 21:26 ` Jeff Garzik
2004-08-29 21:33 ` Robert Love
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