On Tuesday 19 February 2008 08:15:44 Antonio Casado Rodríguez imposed structure on a stream of electrons, yielding:
I've got theses tests, with dovecot 1.0.10, dovecot-lda, quota-maildir and maildir.
uname -a Linux correo1 2.6.18-53.1.13.el5 #1 SMP Mon Feb 11 13:27:27 EST 2008 x86_64 x86_64 x86_64 GNU/Linux Red Hat Enterprise Linux Server release 5.1 (Tikanga)
...
./imaptest host=127.0.0.1 port=143 user=yyy pass=xxx seed=123 secs=300
1º TEST. mailbox in ext3 (disc local), mmap_disible=no 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% 1420 710 699 1417 1259 1818 332 996 1259 1411 2832
The GFS root# fgrep gfs_correo /etc/fstab /dev/vgGFSemail/lvGFSemail /gfs_correo gfs defaults 1 2
2º TEST mailbox in gfs (disc in SAN), mmap_disable = yes 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% 111 48 51 111 103 143 41 78 103 106 222
2º TEST mailbox in gfs (disc in SAN), mmap_disable = no 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% 166 77 85 166 156 213 54 132 156 161 330
Do you mean the performance with GFS is bad? That's about the same thing we found out. Sharing the folder space via GFS was terribly slow. We had to abandon GFS and switch back to NFS. I believe GFS is just not designed to handle a large number of small files and that's what you usually have in your mail storage (if you use Maildir).
Karsten.
Nothing cures insomnia like the realization that it's time to get up.