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http://issues.apache.org/bugzilla/show_bug.cgi?id=34508 Summary: Randomly slow graceful restart, not accepting new connections. Product: Apache httpd-2.0 Version: 2.0-HEAD Platform: PC OS/Version: Linux Status: NEW Severity: normal Priority: P3 Component: prefork AssignedTo: bugs@httpd.apache.org ReportedBy: [EMAIL PROTECTED] This is observed in 2.0.53 and 2.0.54 versions, prefork operated. The server use is medium (typically 100 to 200 simultaneous connections), no PHP, no mod_perl, only cgi. Every hour, I move (mv) the log to a new filename, send a graceful restart to ensure using a new one, and wait 60 seconds (other values tested without changes) to copy it to another host to process it (scp). Some minutes later, the old log is deleted. I see the server stops to accept new connections just after the graceful restart is requested, bandwidth measurements shows a clear down graphic, and time required to accept new ones vary from a few seconds (97% cases) to a few minutes, keeping the site unnecessarilly down. I expect graceful restart don't causes to stop accepting new connections, as I understand this is the normal SIGUSR1 action required. A test adding a sleep of five seconds after moving log and before requesting the graceful restart causes no effect. These are the compiling options used: CC="gcc" CFLAGS="-O2 -fomit-frame-pointer -fno-strict-aliasing -fno-common -pipe -mpreferred-stack-boundary=2 -march=i686" ./configure --prefix=/usr/local/apache/apache_1 --enable-modules="deflate headers info cgi speling rewrite" --disable-so --disable-suexec --disable-cgid --disable-expires --disable-logio --disable-imap --disable-negotiation --disable-autoindex --disable-include --disable-userdir There are two more Apache2 servers on the same host (using different IP/port combinations, of course, and different PID files), one used for SSL connections and another one to serve PHP and mod_perl scripts, these others have no log processing, and no graceful restarts are requested for them. May be interesting to show this configuration parts: <IfModule prefork.c> StartServers 64 MinSpareServers 32 MaxSpareServers 64 MaxClients 250 MaxRequestsPerChild 0 </IfModule> Timeout 60 KeepAlive On MaxKeepAliveRequests 100 KeepAliveTimeout 10 There is almost no swap, I don't see LoadAverage or CPU% too high (<1.00, <30%), but is difficult to catch it just at the exact 'failing time'. There is no local databases, SMTP servers or other functionalities wich suspected to cause load for this host (P4 2,8 Ghz, 1GB RAM), is maintained only to host three Apache2 servers. Also note that if I use a restart instead of a graceful restart, the results are just the same: too much time to kill the server -not allways, only about 3%-, from 30 seconds to 8 minutes, and then the new connections accepted when all finished and restarted. Too much time to shutdown childs and not accepting new connections when issuing a graceful restart is the problem I see. Thank to all the readers. -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
