At 04:36 PM Friday 8/6/99, you wrote:
>Makes me amazed at the machines that people have to run mail anymore.
>My company mail server is a p75, 32M, 2G IDE
>I have only 30 users but alot of throughput, never had any problems with
Right. But presumably Cris is talking about something a "tad" bigger. I
found that I needed around 4 X Sparc 5s for 60,000-100,000 users.
That's a system that has to deal with over 2,000 times your load and there
are plenty bigger...
Mark.
>queuing or ever had to reboot for any reason other than a kernel update.
>Maybe I should run some benchmarks just to show how great qmail is on a
>piece of dirt machine.
>
>-----Original Message-----
>From: Cris Daniluk [mailto:[EMAIL PROTECTED]]
>Sent: Friday, August 06, 1999 4:31 PM
>To: QMail
>Subject: Performance
>
>
>Well, we're starting into our testing of qmail so that we can transition
>away from the garbage-polluted ms smtp server that we had such a long thread
>about earlier this week.
>
>Basically, we constructed a temporary system for benchmarking. It is a dual
>p2 400 with a dpt smartraid5 controller and 64mb cache. We put in 2 9.1gb
>cheetahs on a raid 0 stripe. The system has 160mb ram.
>
>The first benchmark we ran was to see how fast we could populate the queue.
>I made a script to sequentially fill the queue with 20kb messages. It was
>able to do 2000 20kb messages in approximately 16 seconds (precision was
>only to the second, so 15.1-16.9 are valid ranges). 125 messages per second
>is more than adequate for our needs. I was very impressed by the fact that
>qmail could populate the queue so quickly. I think that definitely goes to
>show the scalability of qmail.
>
>The next test we're going to do is to use it as a mail relay, relaying from
>the message generator machines out to the net. For the short term, we are
>going to run 4 separate qmails with 4 separate queues. Each instance will be
>on a separate ip, though. What needs to be done to qmail to make it bind to
>a specific IP? This is pretty vital that we bind to separate ips because
>eventually we will be putting in 4 network cards (one for each queue).
>
>To further increase our hardware aresenal, once we find the optimal
>performance setup, we're going to build 5 of them. We'll have 5 machines
>generating mail, 5 sending, and we hope to be able to send upward of 10
>million or more per day. At that time we'll also have a 256mb cache on the
>raid controller so that the queue can run much more efficiently.
>
>I think that everyone on the qmail list deserves a big thanks from all of us
>for the valuable information and insight. It appears that qmail will be a
>successful solution for us, and ironically, thousands of dollars cheaper
>than the Big Hardware Big Software microsoft solution that we were using
>before.
>
>Once we get the network cards in and binded, we'll be on our way to a
>wonderful solution...
>
>Cris Daniluk
>MicroStrategy
