linux-kernel - RE: Network slowdown due to CFS

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Message-ID: <MDEHLPKNGKAHNMBLJOLKAEPLHCAC.davids@webmaster.com>
Date:	Mon, 1 Oct 2007 15:44:09 -0700
From:	"David Schwartz" <davids@...master.com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	<linux-kernel@...r.kernel.org>
Subject: RE: Network slowdown due to CFS

> yielding IS blocking. Just with indeterminate fuzzyness added to it....

Yielding is sort of blocking, but the difference is that yielding will not
idle the CPU while blocking might. Yielding is sometimes preferable to
blocking in a case where the thread knows it can make forward progress even
if it doesn't get the resource. (As in the examples I explained.)

DS

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