Re: [ZODB-Dev] Zope memory usage

2008-09-18 Thread Laurence Rowe
Izak Burger-2 wrote: > > Dieter Maurer wrote: >> This is standard behaviour with long running processes on >> a system without memory compaction: > > Of course, I remember now, there was something about that in my > Operating Systems course ten years ago :-) I suppose the bigger page > sizes

Re: [ZODB-Dev] Zope memory usage

2008-09-18 Thread Izak Burger
Dieter Maurer wrote: > This is standard behaviour with long running processes on > a system without memory compaction: Of course, I remember now, there was something about that in my Operating Systems course ten years ago :-) I suppose the bigger page sizes used on some architectures doesn't hel

Re: [ZODB-Dev] Zope memory usage

2008-09-18 Thread Dieter Maurer
Roché Compaan wrote at 2008-9-17 19:52 +0200: >Thanks for the notice. We'll give this a go and report back. > >Do you know how exactly it is decided what stays in the cache? The cache replacement strategy has not changed: "lru" ("least recently used"). Objects are removed from the cache in invers

Re: [ZODB-Dev] Zope memory usage

2008-09-17 Thread Manuel Vazquez Acosta
Alan, I'm replying to the Zope list also, because this issue is perhaps related to other components there. I'm running into the same situation: The python process running my Plone site is steadyly growing. I'm using Zope2.9.8-final (the one which works with Plone 2.5.5). What is the plan for Zo

Re: [ZODB-Dev] Zope memory usage

2008-09-17 Thread Dieter Maurer
Izak Burger wrote at 2008-9-17 12:10 +0200: >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, b

Re: [ZODB-Dev] Zope memory usage

2008-09-17 Thread Roché Compaan
Hi Alan Thanks for the notice. We'll give this a go and report back. Do you know how exactly it is decided what stays in the cache?  -- Roché Compaan Upfront Systems http://www.upfrontsystems.co.za On Wed, 2008-09-17 at 10:26 -0500, Alan Runyan wrote: > There was a recent mo

Re: [ZODB-Dev] Zope memory usage

2008-09-17 Thread Alan Runyan
There was a recent modification to limit the ZODB cache to a set size. i.e. Limit the size of memory usage to 128MB. The original feature was implemented here: http://svn.zope.org/ZODB/branches/dm-memory_size_limited-cache/ You can get the feature+3.8 branch of the ZODB from: http://svn.zope

[ZODB-Dev] Zope memory usage

2008-09-17 Thread Izak Burger
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