This is a follow up with some more observations: While several of my build processes were running, I was monitoring the CVS server with 'top'. I noticed a strange occurrence with two of cvs processes that were currently executing a log command - both processes grew to consume nearly all available memory (in my case 512MB). While this was occurring, the cvs clients associated with these growing cvs processes started dumping the 'waiting for blahs lock' messages to stdout. This went on for about 15 minutes before the log commands completed. Does anyone know if this is normal behavior?
BTW, in case you're curious, the log command is running against a source tree with ~1.5 GB of mixed binary and text source files. I think the biggest binary file is ~30MB. Regards, -- Ian MacDonald -----Original Message----- From: MacDonald, Ian [mailto:[EMAIL PROTECTED] Sent: Thursday, February 27, 2003 12:10 PM To: '[EMAIL PROTECTED]' Subject: Lock contention executing cvs log Hi Folks, I'm sorry if this posting might appear twice. I first posted this to the NNTP group gnu.cvs.help but was not sure my posts were actually making it. Here's my problem: We have an automated build environment (CruiseControl) running on multiple hosts that poll for changes in a cvs repository using the cvs log command. We are seeing a problem that seems to be resulting in an inordinate amount of time executing the log command. When to two or more of the hosts are executing "cvs -q log -N -d upperdate > Lowerdate -b" on the same module they seem to get stuck in a lockstep mode of waiting for each others locks with each module taking upwards of a minute. For our respository this adds up to 30 minutes to each build cycle scanning for changes. Shouldn't cvs simply be using "read" locks while executing the log command? If that's the case, why is there a contention for the "read" locks? Perhaps there is a write lock getting created? Any assistance would be appreciated. Thanks, -- Ian MacDonald _______________________________________________ Info-cvs mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/info-cvs
