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Re: Pegging CPU with epoll_wait

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Henrik Nordstrom wrote:
restarting squid (maybe a few hours or a few days), it starts pegging the CPU at 100%. Running strace on the squid processes scrolls:

    epoll_wait(3, {}, 256, 0)               = 0

as fast as my screen will scroll. Restarting squid makes it settle down again for a while.

... then file a bug report and attach your cache.log file.

It happened again, and bug #2296 has been filed.  FYI, squidclient reports:

# squidclient -p 80 mgr:events
HTTP/1.0 200 OK
Server: squid/2.6.STABLE6
Date: Fri, 04 Apr 2008 16:41:22 GMT
Content-Type: text/plain
Expires: Fri, 04 Apr 2008 16:41:22 GMT
Last-Modified: Fri, 04 Apr 2008 16:41:22 GMT
X-Cache: MISS from revproxy.bryanlgh.org
X-Cache-Lookup: MISS from revproxy.bryanlgh.org:80
Via: 1.0 revproxy.bryanlgh.org:80 (squid/2.6.STABLE6)
Connection: close

Last event to run: storeClientCopyEvent

Operation       Next Execution  Weight  Callback Valid?
storeClientCopyEvent    0.000000 seconds        0       yes
storeClientCopyEvent    0.000000 seconds        0       yes
storeClientCopyEvent    0.000000 seconds        0       yes
MaintainSwapSpace       0.449644 seconds        1       N/A
ipcache_purgelru        5.780025 seconds        1       N/A
fqdncache_purgelru      9.699383 seconds        1       N/A
storeDirClean   13.604307 seconds       1       N/A
statAvgTick     43.007845 seconds       1       N/A
peerClearRR     102.739505 seconds      0       yes
peerClearRR     102.739505 seconds      0       yes
peerClearRR     102.739505 seconds      0       yes
peerClearRR     102.739505 seconds      0       yes
peerClearRR     102.739505 seconds      0       yes
peerClearRR     102.739505 seconds      0       yes
peerClearRR     102.739505 seconds      0       yes
peerRefreshDNS  2868.335948 seconds     1       N/A
User Cache Maintenance  3102.819286 seconds     1       N/A
storeDigestRebuildStart 3103.252835 seconds     1       N/A
storeDigestRewriteStart 3103.278672 seconds     1       N/A
peerDigestCheck 141057.508629 seconds   1       yes

begin:vcard
fn:Ben Hollingsworth
n:Hollingsworth;Ben
org:BryanLGH Health System;Information Technology
adr:;;1600 S. 48th St.;Lincoln;NE;68506;USA
email;internet:ben.hollingsworth@xxxxxxxxxxxx
title:Systems Programmer
tel;work:402-481-8582
tel;fax:402-481-8354
tel;cell:402-432-5334
url:http://www.bryanlgh.org
version:2.1
end:vcard


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