> No, that conclusion is entirely wrong. You are not measuring MTA
> performance.
>
> All you have shown is that mail leaves the machine at 15/second,
> whether you use qmail or Postfix, using your specific configurations.
>
> In other words, the delivery rates aren't limited by the MTAs.
>
> Given sufficient network bandwidth and delivery process parallelism,
> the delivery rates will eventually become limited by the MTA's disk
> usage, and it is known that qmail hits the disk a bit harder than
> Postfix does.

well, since using a ramdisk for the queue is not possible due to the volume
of the list, i will just have to write a wrapper, what i have picked up on
the qmail list - using qmail-remote to try to send each email to the
intended recipient, and feeding the email to the mta only if the delivery
failed, using postfix as the mta - i like it alot for all the additional
features. does anyone has such an implementation ?

this is the general logic :

maxchildren=1000;
children=0;

whenever SIGCHLD decrement children

while (workdoto) {
get_work();

if (children == maxchildren ) wait();
child=fork();

# error conditions in parent
if (child<0) {
error, set maxchildrenlower, exit or retry;
};

# this is the child process
if (child==0) {
send mail using qmail-remote
if !success
send mail using the mta
exit 0 # child finished
};

# this is the parent process
if (child > 0 )
children ++

}

# wait for children to finish
while (children != 0) wait();
exit

Alex.

-
To unsubscribe, send mail to majordomopostfix.org with content
(not subject): unsubscribe postfix-users

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]