Apparently, though unproven, at 18:43 on Friday 10 September 2010, Florian Philipp did opine thusly:
> Am 10.09.2010 01:49, schrieb Enrico Weigelt: > > * Alan McKinnon <alan.mckin...@gmail.com> wrote: > >>> But I'd really like to know what produces the performance hits > >>> on Posfix @ Linux. > >> > >> It comes down to the IO scheduler. Linux is designed to be general > >> purpose. FreeBSD is designed to be much more specific. > > > > hmm, Linux provides several io schedulers - does choosing another > > one help here ? > > And if it's so good for certain workloads, why hasn't FreeBSD's > scheduler been ported to Linux? Or is the whole software stack (block > devices etc.) so completely different that it wouldn't work? I don't have an answer for that - just some observations that are quite old and maybe not even valid anymore. Either way, I have mail relays that pump 3,000,000 mails each per day and have done so flawlessly for years. I'm not about to risk that to see if I can find another 0.x% performance gain :-) -- alan dot mckinnon at gmail dot com
