[Dovecot] Dovecot imaptest on RHEL4/GFS1, RHEL6/GFS2, NFS and local storage results

[Aliet Santiesteban Sifontes]

Thanks Ed, right now we are finishing the setup, next week we will continue
the tests and will let you know the results...
best regards

2011/5/23 Ed W <lists at wildgooses.com>

> On 11/05/2011 00:00, Aliet Santiesteban Sifontes wrote:
> > Using local storage(local hard driver ext4 filesystems)
> >
> >
> > Totals:
> > Logi List Stat Sele Fetc Fet2 Stor Dele Expu Appe Logo
> > 100%  50%  50% 100% 100% 100%  50% 100% 100% 100% 100%
> >                           30%                  5%
> > 7798 3868 3889 7706 7566 10713 1080 6089 7559 7688 15562
> > 7806 3879 3874 7716 7585 10873 1114 6018 7578 7696 15572
> > 7866 3910 3855 7773 7748 11053 1076 6253 7747 7761 15710
> > 7893 3978 3931 7802 7772 10988 1117 6197 7767 7789 15760
> > 7775 3853 3809 7683 7654 10897 1081 6142 7651 7675 15534
> > 7877 3919 3872 7789 7758 10986 1085 6218 7755 7773 15720
> >
> > GFS2-mdbox, (no plugins)
> >
> > Totals:
> > Logi List Stat Sele Fetc Fet2 Stor Dele Expu Appe Logo
> > 100%  50%  50% 100% 100% 100%  50% 100% 100% 100% 100%
> >                           30%                  5%
> > 7547 3739 3749 7455 7421 10605 1053 5931 7417 7443 15074
> > 7480 3702 3724 7387 7367 10558 1064 5874 7366 7378 14946
> > 7523 3759 3711 7428 7394 10560 1126 5898 7390 7412 15014
> > 7455 3736 3621 7364 7326 10561 1088 5854 7324 7349 14880
> > 7431 3712 3686 7337 7312 10406 1017 5882 7311 7328 14844
> > 7426 3704 3671 7334 7296 10364 1076 5791 7296 7325 14834
> > 7517 3673 3782 7425 7406 10554 1103 5913 7404 7414 15008
>
> Hi, this performance seems excellent!
>
> There is no reason at all why you might try this, but as someone on
> lower end hardware I would be fascinated to learn how the performance
> changes is:
>
> - Switch FC to gig ethernet? (expecting substantial performance hit?)
> - Reverting to maildir (suspecting much less of a hit based on your
> numbers above?)
> - OCFS vs GFS (although probably not sensible in your architecture since
> you have a support contract for GFS, some have suggested OCFS can be
> faster?)
>
> Please do post any other performance results - seems like you have found
> an excellent cluster setup?
>
> Ed W
>