Hi all, I'm sure this question has been asked before, but it drives me nuts so I figured I'll ask again. This is a problem that has been bugging me for ages. Why does zope memory use never decrease? Okay, I've seen it decrease maybe by a couple megabyte, but never by much. It seems the general way to run zope is to put in some kind of monitoring, and restart it when memory goes out of bounds. In general it always uses more and more RAM until the host starts paging to disk. This sort of baby-sitting just seems wrong to me.
It doesn't seem to make any difference if you set the cache-size to a smaller number of objects or use a different number of threads. Over time things always go from good to bad and then on to worse. I have only two theories: a memory leak, or an issue with garbage collection (python side). It is possible that this is not a bug, my reasoning goes like this: The OS exposes a "virtual memory" picture to the application, ie, the application does not know how much of the RAM is real and how much is paged out. All it does is call malloc every now and then. Combined with a kernel that allows overcommit (which is in general a good thing), I see this going only one way. I'm hoping someone on this list has some insights into the issue. regards, Izak _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
