In /var/qmail/control create a file called concurrencyremote and concurrencysmtpd. The contents looks like this....
[EMAIL PROTECTED] control]# cat concurrencyremote 2
I know under load on slower machines qmail comes to a griding halt when a whole lot of qmail-scanner instances are running. If your CPU is being hoged and you have many smtpd connections the qmail-scanner processes will be starved and thus causing your box to grind to a halt.
The output below seems ok.
Tim Clarke wrote:
Daniel. "ps -auxww |grep qmail" yields:
root 1637 0.0 0.0 1384 132 ? S Apr28 0:00 supervise qmail-pop3d root 1639 0.0 0.0 1384 144 ? S Apr28 0:00 supervise qmail-send root 1641 0.0 0.0 1412 84 ? S Apr28 0:00 /usr/local/bin/tcpserver -v -R -H -l 0 0 110 /var/qmail/bin/qmail-popup man2.m1.manifest.co.uk /usr/local/bin/checkcdb /var/qmail/bin/qmail-pop3d Maildir qmails 1643 0.0 0.0 1444 216 ? S Apr28 0:00 qmail-send root 1644 0.0 0.0 1388 136 ? S Apr28 0:00 supervise qmail-smtpd root 1651 0.0 0.0 1400 84 ? S Apr28 0:00 qmail-lspawn ./Maildir/ qmailr 1652 0.0 0.0 1400 172 ? S Apr28 0:00 qmail-rspawn qmailq 1653 0.0 0.0 1392 160 ? S Apr28 0:00 qmail-clean qmaild 1658 0.0 0.0 1456 164 ? S Apr28 0:00 /usr/local/bin/tcpserver -v -R -l man2.m1.manifest.co.uk -x /etc/tcp.smtp.cdb -c 20 -u 503 -g 503 0 smtp rblsmtpd -r relays.ordb.org /var/qmail/bin/qmail-smtpd qmaill 27807 0.0 0.0 1404 176 ? S 04:03 0:00 /usr/local/bin/multilog t s999999 n999 /var/log/qmail qmaill 27810 0.0 0.0 1404 148 ? S 04:03 0:00 /usr/local/bin/multilog t s999999 n999 /var/log/qmail/smtpd qmaill 27813 0.0 0.0 1400 140 ? S 04:03 0:00 /usr/local/bin/multilog t s999999 n999 /var/log/qmail/pop3d root 28818 0.0 0.1 1740 608 pts/3 S 08:01 0:00 grep qmail
Is that "-c 20" what I'm hunting for to limit the inbound connections? I know where it is in the qmail supervise scripts, presumably it just means that we'll be throttling mail delivery somewhat? Obviously I'm looking for a cure for the hang, so would setting it down to say, 5, be too aggressive?
Tim Clarke
-----Original Message-----
From: Daniel Czarnecki [mailto:[EMAIL PROTECTED] Sent: 29 April 2004 00:23
To: Tim Clarke
Cc: [EMAIL PROTECTED]
Subject: RE: [Qmail-scanner-general](no subject)
what does
ps -auxww |grep qmail
give you?
-- Kind Regards,
Dan
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