Date: Fri, 20 Jul 2012 12:38:09 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Alexander Motin <mav@freebsd.org> Cc: Charles Owens <cowens@greatbaysoftware.com>, freebsd-stable@freebsd.org, John Baldwin <jhb@freebsd.org>, Steve McCoy <smccoy@greatbaysoftware.com> Subject: Re: mfi(4) IO performance regression, post 8.1 Message-ID: <CAJ-Vmo=fEkyB-xA4tHfJVOdOyR9cqF_CVHy4TzsZBuZvdTNM5A@mail.gmail.com> In-Reply-To: <50095F38.4040204@FreeBSD.org> References: <4FDABA0B.5030702@greatbaysoftware.com> <4FFF34BA.9030002@greatbaysoftware.com> <4FFF9A50.40006@greatbaysoftware.com> <201207130939.54311.jhb@freebsd.org> <5005CD83.306@greatbaysoftware.com> <CAJ-VmomHhDrWfqw4aNKMQ-RWvJQ4uyRYdPcMzp61S3AQ%2BOhwqQ@mail.gmail.com> <50095F38.4040204@FreeBSD.org>
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Hi Alexander, I'm worried that this won't be the only source of "freebsd is slower than linux" issues. What can we add to the timer path to make identifying and root causing this issue easy? I'd just like to be absolutely sure that we're not only doing the best job possible, but we can provide some tools and statistics to the user/administrator so as to make debugging much easier. Thanks, Adrian
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