[Mailman-Users] big lists, big messages

J C Lawrence claw at kanga.nu
Sun May 13 19:12:12 CEST 2001


On Sat, 12 May 2001 23:21:05 -0700 
Chuq Von Rospach <chuqui at plaidworks.com> wrote:

> On 5/12/01 10:51 PM, "J C Lawrence" <claw at kanga.nu> wrote:
>> I find this curious.  I have MAX_RCPT_TO set to 5, and to
>> broadcast 30 messages to a subscriber base of 1,000 (ie 6,000
>> spool entries) through qrunner to the MTA (postfix) on a dual
>> PII-333 takes just over 6 seconds once started.  Admittedly
>> that's an appreciable time, but its also not that long a time in
>> the lands of lock contention and lock timeouts.

> It all comes down to how fast your MTA accepts messages. 

True, thus my query.

> If you're running postfix with DNS deferred, you rock. If you're
> running sendmail with DNS on, it's a lot slower. So it's something
> you have to judge based on your own system.

Aye, that's one of my more common performance refrains along with,
"install and use a local cacheing name server!".  Fair dunkum tho --
I'd forgotton the painful side effects of turning of DNS checks for
Sendmail, and had thus ritely assumed that non-DNS-check was a
default starting point.

-- 
J C Lawrence                                       claw at kanga.nu
---------(*)                          http://www.kanga.nu/~claw/
The pressure to survive and rhetoric may make strange bedfellows




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