On Thu, 20 May 2010, Graeme Fowler wrote: > Subject: Re: [exim] any recent published benchmarks > > On Thu, 2010-05-20 at 14:20 -0400, Dave Lugo wrote: >> I've been asked regarding how much mail exim >> can handle per day. > > Ugh. Thorny question. >
Yup :) >> Are there any benchmarks out there that I can >> look at? > > I'm not sure, but... > >> Yes, I know I can run my own (and I have); I'd >> just like a few more data points if they're >> available. > > ...the problem (for you, in terms of data) is that there is no > "standard" configuration of Exim on a given "standard" piece of > hardware. > Yup :) > Exim scales pretty well and (like most MTAs) is usually limited by the > hardware it runs on. Unfortunately it seems only the big boys bother to > shell out time and money for SPEC tests (see > http://www.spec.org/mail2001/results/ , > http://www.spec.org/mail2009/results/mail2009.html ) and they throw some > serious hardware at it. > > I think a more pertinent set of questions would be: > > 1. How many messages/day do you *want* to handle? I've asked, and I've been told that information is not available to me. > 2. On what sort of, and how many servers? recent x86, I'd expect quad-code, 4GB ram > 3. What storage do you have available? fast local disk > 4. Do you need to relay (authenticated senders, for example)? nope > 5. What format do you store lookup tables in? > 6. How many users do you have? two in one shot: none, mainly used as border relay behind postini > ... > N. The Nth question. Probably "are you running inline AS/AV?", or > something... and so on, and so forth. > Likely not. > Unfortunately, as you can see, the answer to your original question is > "it depends". I'm sure there are people on the list who can offer you > some raw data from their systems, but given the infinitesimal likelihood > of their systems being anything like yours, that data might as well be > cheese :) > That's what I've told my manager, I'm just doing my due-diligence :) I did a benchmark a few weeks ago - one server as detailed above, sending to a sink connected on local LAN, 100K items, came to millions of items per day. But, I was asked to see if there were any other benchmarks I could cite to the customer. > FWIW at work we now deliver something like 60 messages/min when averaged > over a year; we've dumped enormous queues after planned backend outages > at rates well in excess of 10 times that without the servers getting > overloaded. [caveat: Google now handle our student mail so our average > load has gone down]. > > Sorry that's not a more definitive answer! > S'ok, it was an appropriate answer, given the slim info I provided. Thanks! > Graeme > > > -- -------------------------------------------------------- Dave Lugo [email protected] No spam, thanks. Are you the police? . . . No ma'am, we're sysadmins. -------------------------------------------------------- -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
