From: Eric Wong <e@80x24.org>
To: "Bráulio Bhavamitra" <braulio@eita.org.br>
Cc: unicorn-public <unicorn-public@bogomips.org>
Subject: Re: Old unicorn workers still receives requests?
Date: Thu, 24 Jul 2014 17:04:24 +0000 [thread overview]
Message-ID: <20140724170424.GA29938@dcvr.yhbt.net> (raw)
In-Reply-To: <CAJri6_utbVKHeeYQd7WZG9iiVNKxD4kJ_X6fno2oX4_HChiuKA@mail.gmail.com>
Bráulio Bhavamitra <braulio@eita.org.br> wrote:
> Hello all,
>
> I would like to know if old unicorn still receives and process requests in
> a QUIT signal is sent to the old master.
During heavy traffic, yes, there's a chance due to the optimization
in worker_loop (lib/unicorn/http_server.rb):
# make the following bet: if we accepted clients this round,
# we're probably reasonably busy, so avoid calling select()
# and do a speculative non-blocking accept() on ready listeners
# before we sleep again in select().
unless nr == 0
tmp = ready.dup
redo
end
Note, "receives" requests isn't correct, workers "pull" requests from
a central queue in the kernel.
next prev parent reply other threads:[~2014-07-24 17:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-24 16:27 Old unicorn workers still receives requests? Bráulio Bhavamitra
2014-07-24 17:04 ` Eric Wong [this message]
2014-07-24 17:22 ` Bráulio Bhavamitra
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