This pretty much sounds like a reasonable explanation - unfortunately it may not be the (only) reason.
I forgot to mention that this "periodic peaks" load-pattern occurs only from time to time. I. e. when the pattern happens, the peaks occur periodically. But after restarting Archiva, the pattern does not occur anymore for a couple of days or weeks. I can be sure about this because we have notifiers installed that warn when a certain HTTP-request on Archiva exceeds a certain threshold value. We have not seen alarms between 3rd of november and 30th of november. On the 30th out of a sudden the periodic load raised tremendously. I doubt the RDBMS being slower could have an impact on the load. It's a bit mysterious... brettporter wrote: > > These look to be on the hour, which would correlate with the default > scanning interval. You can reduce that period as long as you are not > relying on detecting the arrival of files on the filesystem from external > sources and can wait for certain metadata to be populated. > > Archiva 1.2.3-SNAPSHOT should dramatically increase the performance of the > system during these periods, and we are discussing alternatives for > removing it for normal operation in future versions. > > HTH, > Brett > > On 01/12/2009, at 8:48 PM, Marc Lustig wrote: > >> >> Archiva causes periodically an increased system-load. (see MRM-1291 for >> Munin-stats ) >> >> During these peaks calling the homepage takes around 6 secs, whereas >> normally it is around 1 sec. >> >> I could not identify corresponding messages in the logs. >> >> Could somebody else observe this? >> -- >> View this message in context: >> http://old.nabble.com/Archiva-has-periodic-load-peaks-tp26588110p26588110.html >> Sent from the archiva-dev mailing list archive at Nabble.com. >> > > -- > Brett Porter > [email protected] > http://brettporter.wordpress.com/ > > > > > -- View this message in context: http://old.nabble.com/Archiva-has-periodic-load-peaks-tp26588110p26590909.html Sent from the archiva-dev mailing list archive at Nabble.com.
