Messages in this thread | | | Date | Tue, 12 Aug 2003 17:14:36 -0700 | From | Ken Savage <> | Subject | Re: High CPU load with kswapd and heavy disk I/O |
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On Tue August 12 2003 16:49, Nuno Silva wrote:
> My guess is that this is the cause. LOWMEM pressure because of very > large directories... Relating to this, linux-2.6.0-test3-mm1 has Ingo's > 4G/4G memory split. Can you try this kernel, enable 4G/4G feature, and > report back?
Something about the 2.6 (and the rmap patched 2.4) kernels causes lockouts on the server -- for reasons OTHER than kswapd. The server running the delete-old-files process runs hundreds of other CPU and disk I/O intensive processes/threads, and it doesn't look like 2.6 is yet able to handle the load. Unfortunately, the server is a production environment machine at a remote site, so lockouts/reboots/kernel panics are baaaad :(
I've seen other mentions of kswapd/kupdated problems in 2.4.xx, but few mentions of solutions. Have people just learned to avoid the situations that trigger the mad thrashes?
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