RE: [Mailman-Users] (no subject)
Well, I know for a fact (thanks to /var/log/messages) that I ran out of file descriptors with Mailman and Sendmail using a stock kernel. And from the mods listed on the original message, you'll note the "FD_SETSIZE" value which is coming straight out of 2.2 source. Now, the FD limitation may have been caused by python, generating the message queue, but, saying that sendmail only opens one socket per entry in the queue is a bit misleading don't you think. Realize that sendmail may spawn n number of children (defined in sendmail.cf.) in processing mail, and if each child takes some number of entries in the queue, you could use quite a few file descriptors. All I know is that the kernel mods fixed my initial problems, and then switching to postfix dramatically improved performance from a load perspective.
- Herman
-----Original Message----- From: Paul Tomblin [mailto:ptomblin@xcski.com] Sent: Tuesday, April 04, 2000 10:07 AM To: mailman-users@python.org Subject: Re: [Mailman-Users] (no subject)
Quoting Herman Knief (hknief@auctionwatch.com):
I think it's actually 4096 on 2.2 kernels. However, I don't think this is a problem with sendmail. Sendmail essentially only opens one socket at a time for each entry in the mailq. Postfix makes simultaneous connections, which may mean that you'll need to increase the maximum number of files with postfix even if you don't for sendmail.
-- Paul Tomblin <ptomblin@xcski.com>, not speaking for anybody God does not play dice with the Universe. -- Albert Einstein.
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Herman Knief