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)
dovecot -n # 1.0.10: /etc/dovecot.conf log_path: /var/log/dovecot/dovecot.log info_log_path: /var/log/dovecot/dovecot.info protocols: imap imaps pop3 managesieve ssl_cert_file: /etc/pki/dovecot/certs/imap.ual.es.crt ssl_key_file: /etc/pki/dovecot/private/imap.ual.es.key login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login login_executable(managesieve): /usr/libexec/dovecot/managesieve-login mail_location: maildir:/gfs_correo/mail/%n mmap_disable: yes mail_executable(default): /usr/local/sbin/post-login-imap-dovecot mail_executable(imap): /usr/local/sbin/post-login-imap-dovecot mail_executable(pop3): /usr/local/sbin/post-login-pop3-dovecot mail_executable(managesieve): /usr/libexec/dovecot/managesieve mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): quota mail_plugins(managesieve): mail_plugin_dir(default): /usr/lib64/dovecot/imap mail_plugin_dir(imap): /usr/lib64/dovecot/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3 mail_plugin_dir(managesieve): /usr/lib64/dovecot/managesieve namespace: type: private separator: / location: maildir:/gfs_correo/mail/%n inbox: yes auth default: passdb: driver: pam userdb: driver: passwd plugin: quota: maildir:storage=1048576
./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