Re: [ZODB-Dev] Anybody using ZODB with no calls to fsync in production?

2006-10-12 Thread Chris Withers
Roché Compaan wrote: I'm tempted to deploy ZODB without fsync on some production FileStorage instances. Will I regret it? Well, let us know when you find out ;-) Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk _

Re: [ZODB-Dev] Anybody using ZODB with no calls to fsync in production?

2006-10-12 Thread Lennart Regebro
On 10/11/06, Roché Compaan <[EMAIL PROTECTED]> wrote: I'm tempted to deploy ZODB without fsync on some production FileStorage instances. Will I regret it? There was a mention that most SQL-databases do it only each X commits. That might be an idea? That means that in worst case you lose X trans

Re: [ZODB-Dev] Anybody using ZODB with no calls to fsync in production?

2006-10-12 Thread Marco Bizzarri
You can read what is said about it on PostgreSQL, which has a similar setting. The setting could be very good for (for example) restoring from a backup, where performance is most important and, in case of crash, you have a backup anyway. Regards Marco On 10/11/06, Roché Compaan <[EMAIL PROTECTED

Re: [ZODB-Dev] Anybody using ZODB with no calls to fsync in production?

2006-10-12 Thread Lennart Regebro
On 10/11/06, Roché Compaan <[EMAIL PROTECTED]> wrote: http://mail.zope.org/pipermail/zodb-dev/2004-July/007682.html I read this thread, and it seems to me that the ultimate solution would be to have a setting for FSStorage, say "fsync-behaviour" with the options of "single", "double", "none" or

Re: [ZODB-Dev] Anybody using ZODB with no calls to fsync in production?

2006-10-12 Thread Jim Fulton
+1 Lennart Regebro wrote: On 10/11/06, Roché Compaan <[EMAIL PROTECTED]> wrote: http://mail.zope.org/pipermail/zodb-dev/2004-July/007682.html I read this thread, and it seems to me that the ultimate solution would be to have a setting for FSStorage, say "fsync-behaviour" with the options of "

Re: [ZODB-Dev] Anybody using ZODB with no calls to fsync in production?

2006-10-12 Thread Chris Withers
+1 from me too, this feels like a really good proposal :-) Chris Jim Fulton wrote: +1 Lennart Regebro wrote: On 10/11/06, Roché Compaan <[EMAIL PROTECTED]> wrote: http://mail.zope.org/pipermail/zodb-dev/2004-July/007682.html I read this thread, and it seems to me that the ultimate solution

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[ZODB-Dev] Re: Anybody using ZODB with no calls to fsync in production?

2006-10-12 Thread Tres Seaver
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Chris Withers wrote: > +1 from me too, this feels like a really good proposal :-) +1. Sessions might be a good example of a storage using 'fsync-behavior=None': you would get the speedup, and the ability to survive a restart, without needing to trea

Re: [ZODB-Dev] Re: Anybody using ZODB with no calls to fsync in production?

2006-10-12 Thread David Binger
On Oct 12, 2006, at 5:01 PM, Tres Seaver wrote: +1. Sessions might be a good example of a storage using 'fsync-behavior=None': you would get the speedup, and the ability to survive a restart, without needing to treat the data as "precious". This is an interesting point, and it makes me wond