Re: [ZODB-Dev] persistent client caches okay to use again in ZODB 3.9.6?

2010-10-14 Thread Jim Fulton
On Wed, Oct 13, 2010 at 8:28 PM, Chris Withers ch...@simplistix.co.uk wrote: On 12/10/2010 17:56, Jim Fulton wrote: Currently the only configuration docs are in the .xml Alan provided a link to. The best size will depend on the app. Is there a downside to too big, provided there's plenty

Re: [ZODB-Dev] persistent client caches okay to use again in ZODB 3.9.6?

2010-10-14 Thread Chris Withers
On 14/10/2010 17:09, Jim Fulton wrote: What does this error message imply? That two processes were trying to access the cache. The above did not, however, occur if I stopped and then started the app server... Race condition? Hopefully, you screwed up somehow and started the process while

Re: [ZODB-Dev] persistent client caches okay to use again in ZODB 3.9.6?

2010-10-14 Thread Chris Withers
On 14/10/2010 17:13, Alan Runyan wrote: I went for the following in the end: ... cache-size 200Mb client app wait on /zeoclient mount-point / cache-size 5 cache-size-bytes 500Mb Any obvious issues with that? No. each zeoclient

Re: [ZODB-Dev] persistent client caches okay to use again in ZODB 3.9.6?

2010-10-14 Thread Alan Runyan
I went for the following in the end: ...      cache-size 200Mb      client     app      wait       on    /zeoclient    mount-point /    cache-size       5    cache-size-bytes 500Mb Any obvious issues with that? No. each zeoclient needs a name in your conf. required so the .zec

Re: [ZODB-Dev] persistent client caches okay to use again in ZODB 3.9.6?

2010-10-13 Thread Chris Withers
On 12/10/2010 17:56, Jim Fulton wrote: Currently the only configuration docs are in the .xml Alan provided a link to. The best size will depend on the app. Is there a downside to too big, provided there's plenty of disk space free on the app servers? There are some docs in

[ZODB-Dev] persistent client caches okay to use again in ZODB 3.9.6?

2010-10-12 Thread Chris Withers
Hi All, I'm wondering if some of my issues might be alleviated by persistent client caches. Now, I have the impression that these were unreliable and buggy and had been so for some time. Is this still the case? If not, where are the docs on how to configure them nowadays? cheers, Chris --

Re: [ZODB-Dev] persistent client caches okay to use again in ZODB 3.9.6?

2010-10-12 Thread Alan Runyan
I'm wondering if some of my issues might be alleviated by persistent client caches. anything is possible. Now, I have the impression that these were unreliable and buggy and had been so for some time. they appear to be more stable now. we use them on several customer's in very specific

Re: [ZODB-Dev] persistent client caches okay to use again in ZODB 3.9.6?

2010-10-12 Thread Jim Fulton
On Tue, Oct 12, 2010 at 11:33 AM, Chris Withers ch...@simplistix.co.uk wrote: Hi All, I'm wondering if some of my issues might be alleviated by persistent client caches. Now, I have the impression that these were unreliable and buggy and had been so for some time. They became much better

Re: [ZODB-Dev] persistent client caches okay to use again in ZODB 3.9.6?

2010-10-12 Thread Chris Withers
On 12/10/2010 17:11, Jim Fulton wrote: Now, I have the impression that these were unreliable and buggy and had been so for some time. They became much better in later 3.8 releases and still much better lately. We've been using them in production for quite a while. Any docs on recommended

Re: [ZODB-Dev] persistent client caches okay to use again in ZODB 3.9.6?

2010-10-12 Thread Jim Fulton
On Tue, Oct 12, 2010 at 12:25 PM, Chris Withers ch...@simplistix.co.uk wrote: On 12/10/2010 17:11, Jim Fulton wrote: Now, I have the impression that these were unreliable and buggy and had been so for some time. They became much better in later 3.8 releases and still much better lately.