[ZODB-Dev] Conflict Errors

[Chris McDonough]

Sessions are highly write-intensive and high-write applications are very
conflict-prone.  Thus, this is almost certainly normal behavior. 
Conflict errors are normal to some degree.  Since these seem to happen
only about once an hour, if you see no other adverse behavior, this is
definitely fine.  To prevent logging the messages, you can adjust your
Zope's STUPID_LOG_SEVERITY environment variable to 100 (WARNING).  

- C


On Mon, 2003-05-12 at 19:45, Lou Scalpati wrote:
> Ever since upgrading our sites to zeo we have been seen lots of conflict
> errors (examples below).  Are these normal under Zeo?  Are they degrading
> performance when the happen?
> 
> Our configuration is 5 web servers (each running 2 zeo clients servicing 2
> different instances) connecting to a zeo server.  We are running : zope
> 2.6.1, Zeo 2.0.2, dbtab 1.1.  Zeo is serving both a Data.fs and a temporary
> storage for shared sessions using dbtab.
> 
> 2003-05-10T04:00:02 INFO(0) ZODB conflict error at / (4 conflicts since
> startup at 2003-05-09T21:30:08)
> 2003-05-10T04:00:03 INFO(0) ZODB conflict error at / (5 conflicts since
> startup at 2003-05-09T21:30:08)
> 2003-05-10T06:00:02 INFO(0) ZODB conflict error at / (6 conflicts since
> startup at 2003-05-09T21:30:08)
> 2003-05-10T07:00:01 INFO(0) ZODB conflict error at / (7 conflicts since
> startup at 2003-05-09T21:30:08)
> 2003-05-10T09:00:01 INFO(0) ZODB conflict error at / (8 conflicts since
> startup at 2003-05-09T21:30:08)
> 2003-05-10T09:00:02 INFO(0) ZODB conflict error at / (9 conflicts since
> startup at 2003-05-09T21:30:08)
> 2003-05-10T10:00:03 INFO(0) ZODB conflict error at / (10 conflicts since
> startup at 2003-05-09T21:30:08)
> 
> Thanks
> 
> Lou
> 
> 
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