Hey,
Not sure if this is really relevant. We have dbmail 2.2.8 on a mail cluster
receiving approximately 2 million connections every 24hours (according to
stats). That's including rejections/insertions. Around 5000 customer
mailboxes (we're a datacenter/virtual hosting company). We're using postfix
> dbmail-lmtpd > MySQL 5x.
Our cluster is currently spread across 5 machines, though, only one is the
db backend which is a dell 2950 (2x quad xeon 4gb RAM though 32bit).
We implement baisc filtering, i.e. header_checks and greylisting.
I'm not sure how the above fairs up against other users/implementations of
dbmail.
Kind Regards
James Greig - JG3108-RIPE
Nuco Technologies Ltd
----- Original Message -----
From: "Tim Channon" <[EMAIL PROTECTED]>
To: "DBMail mailinglist" <[email protected]>
Sent: Sunday, January 27, 2008 4:06 AM
Subject: Re: AW: [Dbmail] Can dbmail cope with 1.000 e-mails/s ?
Paul J Stevens wrote:
One bottleneck in delivery is that we treat message insertion as one
single transaction. Also, the total number of queries used, will most
likely leave room for improvement. But 1k/s seems pretty fast.
Posted as much to check posting to list works and to raise a chuckle.
For reasons you don't want to know I have just built dbmail on a near 10
year old laptop PII 266, swear I heard the fan complaining.
To my shock on Debian 4, I'm a Linux idiot, it came up without too much
pain, mainly dependencies. (found one mistake in the install instructions,
missing ; at the end of mysql command line, which is pretty good, works)
I then logged in across the network and hurled 16,000 emails at imap from
Thunderbird on a fast desktop.
Didn't time it but 1 to 2 a second was the rate, nearer the latter.
Is 1000 times possible?
Obviously 10x that is trivial, just about any modern machine, probably
somewhat more. Hitachi 4,200 disks are okay but for goodness sake! CPU
around 80%, no swap needed or in use. No optimisations other than kernel
has been recompiled, basically all defaults.
I suspect multiple clients would have raised the rate a little, going on
the network lights but not network bound. (100M with 32 bit card)
Split, separate DB server.
Seems a maybe.
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