Perl and sendmail volume limit?

[Kropotkin_reborn]

Hi

I have some code which essentially does this:

open my $fh, "|path/to/sendmail -t -oi -oem";
print $fh, "some text";
close $fh;

It is being called in a mod_perl context.

I've been advised that we may receive up to 13,000 requests per second for
this piece of code - peak.

What limits do I need to worry about?

Thanks

Justin

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[Andrzej Adam Filip]

Kropotkin_reborn <Justin...@Sophos.com> wrote:
> I have some code which essentially does this:
>
> open my $fh, "|path/to/sendmail -t -oi -oem";
> print $fh, "some text";
> close $fh;
>
> It is being called in a mod_perl context.
>
> I've been advised that we may receive up to 13,000 requests per second for
> this piece of code - peak.
>
> What limits do I need to worry about?

With 13_000 requests per second I would suggest you to consider using
cached SMTP connection and Net::SMTP perl module.
[send "NOOP" smtp command to check if cached smtp connection is "alive"]

*OR*

*IF* you prefer simplicity and "horse power" is not a big problem *THEN*
add -odd flag to sendmail invocation (queue message without DNS check)
ad make sendmail do more frequent client queue runs

Anyway: Ask for details at news:comp.mail.sendmail - it is more
sendmail/MTA tuning then perl tuning.

--
[pl>en Andrew] Andrzej Adam Filip : an...@onet.eu : Andrze...@gmail.com
There is hopeful symbolism in the fact that flags do not wave in a vacuum.
-- Arthur C. Clarke