Changing your concurrency is going to depend on how you have installed qmail. The basics are to edit your svscan run script and modify the -c parameter of tcpserver to be the new concurrency level. If the install follows the life-with-qmail installation then you should have several files in your /var/qmail/control directory called concurrencyincoming and concurrencyremote that contain the current values. Just echo a new value into the files and hup the services and all should be good.
As for reiserfs, in all my testing the new versions of reiser were no where near as fast as xfs and jfs. When running qmail with qmail-scanner and SA you have A LOT of file io going on with creates, reads, and deletes. Reiser uses a lot of cpu overhead in newer versions to handle this fast and that can cause a high system load with qmail running, which automatically causes a lot of overhead. I love qmail to death and have been using it for years upon years, with that said though, it tends to cause higher than normal system loads than say Postfix or Exim. On 10/5/07 1:36 PM, "Lampa" <[EMAIL PROTECTED]> wrote: Hello, using SATA discs with software raid 1 (mirror) with reiserfs system. Spamassassin + scanned emails is on separate disc (system) and user mailboxes are on separate disc. I think that reiserfs should be good for that, but i want to migrate fo xfs. Maybe there is option to change concurency but in which way ? 2007/10/5, Ed McLain <[EMAIL PROTECTED]>: > What kind of disk subsystem do you have? In my experience running qmail with > with a high concurrency of inbound emails on anything less than raid10 with > either JFS or XFS for a filesystem is just asking for high load averages and > problems. One option you might think about is offloading the spamassassin > daemon to a separate server to alleviate the overhead it imposes on the > system. This is easily done and can provide quite a nice improvement in > performance. > > > On 10/5/07 5:09 AM, "Lampa" <[EMAIL PROTECTED]> wrote: > > Hello, > > i'm using toaster 0.8.3. Sometimes (one per week) i have problem that > my server hangs for minute or two. I've limit 50 connections for smtpd > (local 20 and remote 10), all 50 connections are used. Server load is > about 50 - 100 and mostly is not responding. I setup connections limit > (timeoutconnect - 20, timeoutremote - 60, timeoutsmtpd - 60) it helps > little (dropping spammers and peple who only block free connections). > Computer is core duo 2 6400@ 2.13GHz with 2G ram. Emails are on > separate disc. Discs are sata with sw raid (mirror) using reiserfs > (need migrate to xfs). There is nothing unusual in logs (except no > activity for minute or two) - no errors, qmail is accepting > connections. > > After this "timeout" spamassassin takes long time to process emails. > > Where can be problem ? Weak CPU, bad power source, bad settings ? > > Qmail is compiled with conf-spawn = 509, conf-split=101. Qmail-scanner > using st patch, using fast spamassassin. Spamassassin is 3.2.1. OS > Debian testing > > Any advices welcome, thank you or help. > > Lampa > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > _______________________________________________ > Qmail-scanner-general mailing list > Qmail-scanner-general@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/qmail-scanner-general > > > > -- > Ed McLain > ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Qmail-scanner-general mailing list Qmail-scanner-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/qmail-scanner-general -- Ed McLain ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Qmail-scanner-general mailing list Qmail-scanner-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/qmail-scanner-general
