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From John Dunlap <>
Subject Re: HTTP and MPM support
Date Mon, 28 Jan 2019 21:27:14 GMT
Yes! Lots of traffic is arguably the best kind of problem to have! :) We
can definitely throw servers at the problem and scale horizontally but
those costs add up and I'm afraid that, unless we can somehow get more
concurrency out of mod_perl, a day will come when we're forced to
acknowledge that we can do more work for less money in a different
language. I was really hoping that a different MPM and http/2 would help in
that regard but it's not sounding hopeful. :(

On Mon, Jan 28, 2019 at 9:18 PM Mark Blackman <> wrote:

> On 28 Jan 2019, at 21:14, John Dunlap <> wrote:
> Our servers already have 32 Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
> cores(if you count hyper threading) so optimization is the road I've been
> going down. I've also Apache::VMonitor to get, at least, *some* insight
> into the internals of mod_perl but I'm uncertain how to use the information
> it gives me to optimize the server.
> Plenty of traffic sounds like a nice problem to have, more machines then?
> :)  I have a hosting business (UK) on the side (
> and would love to sell you some hosting!  On the other hand, if your Perl
> just needs some TLC, then plenty of contractors can help find the hotspots
> and optimise for you.
> - Mark

John Dunlap
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