[firebird-support] Re: Slow Commit - Email found in subject

2012-05-07 Thread aalliana
Thanks Sean, Somehow the thread got split, I'm not sure why. New box has ext4 with the barrier bit set. On the other part of the thread I got adviced to check this parameter. It surely helped performance to disable it. Is it safe to just disable the barriers bit or should I use ext

[firebird-support] Re: Slow Commit - Email found in subject

2012-05-07 Thread philippe makowski
aalliana [2012-05-07 15:17] : Is it safe to just disable the barriers bit or should I use ext 3 filesystem? from http://kernel.org/doc/Documentation/filesystems/ext4.txt : When comparing versus ext3, note that ext4 enables write barriers by default, while ext3 does not enable write

[firebird-support] Re: Slow Commit

2012-05-04 Thread ma_golyo
Hi! Maybe this is your case : Forced Writes Performance impact on #Ubuntu with ext4 no barrier http://www.firebirdnews.org/?p=6421 --- In firebird-support@yahoogroups.com, aalliana aalliana@... wrote: Hello, I'm trying to upgrade a box running ubuntu + firebird that has been running

[firebird-support] Re: Slow Commit

2012-05-04 Thread aalliana
Beautiful! Thanks for the tip. After disabling barriers commits that were taking 4 s take virtually no time at all. I'm wondering what would the consequences would be if I keep the barriers disabled on a production environment. Thanks a lot. --- In firebird-support@yahoogroups.com, ma_golyo

[firebird-support] Re: Slow Commit

2012-05-03 Thread aalliana
A couple of clarifications: 1) I'm replacing the old box with a new one. 2) I'm performing all the tests using a copy of the same database file. --- In firebird-support@yahoogroups.com, aalliana aalliana@... wrote: Hello, I'm trying to upgrade a box running ubuntu + firebird that has