Date: Sat, 21 Jun 2014 07:03:00 -0700 From: John-Mark Gurney <jmg@funkthat.com> To: Magnus Nilsson <magnus.nilsson@gmail.com> Cc: freebsd-arm <freebsd-arm@freebsd.org>, freebsd-embedded@freebsd.org, Ian Lepore <ian@freebsd.org> Subject: Re: Strange slowdown of zlib. Message-ID: <20140621140300.GO31367@funkthat.com> In-Reply-To: <CAHWWKwNovBV7JouzquNK7kvw66ao9OtJ0uiQEsaftQa%2BDpbT5Q@mail.gmail.com> References: <CAHWWKwM_ETrPGZ1fPc451Hn=iCVEb9Z7qj2X0HEz-znwuR_k=w@mail.gmail.com> <1403193531.20883.269.camel@revolution.hippie.lan> <CAHWWKwNovBV7JouzquNK7kvw66ao9OtJ0uiQEsaftQa%2BDpbT5Q@mail.gmail.com>
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Magnus Nilsson wrote this message on Sat, Jun 21, 2014 at 14:13 +0200:
> While e.g. cat or md5 of an executable affects its speed, e.g. cp does not.
> Could there be some read access that's unaffected by your patches?
I believe that cp uses mmap instead of the read syscall like cat and
md5... So this may be the case...
--
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
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