Date: Sun, 28 Apr 2013 17:56:39 +0200 From: =?ISO-8859-1?Q?Olivier_Cochard=2DLabb=E9?= <olivier@cochard.me> To: Andre Oppermann <andre@freebsd.org> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>, Sami Halabi <sodynet1@gmail.com> Subject: Re: forwarding/ipfw/pf evolution (in pps) on -current Message-ID: <CA%2Bq%2BTcoDDfG3SQde2YO1SjzWWukTXjLG-ZXG3YxMcoh0y2fNEw@mail.gmail.com> In-Reply-To: <5178F72F.90008@freebsd.org> References: <CA%2Bq%2BTcpghAtae7%2BuXehxP9%2BtNh1TiTzxOShDNkLt_xSrgoBGdA@mail.gmail.com> <CAEW%2BogY%2BOmtqS7S1OOHXL8LnYSur5nfpJnvi=aM6vjCKH124Hw@mail.gmail.com> <CA%2Bq%2BTcpRZ_Dc=WTE522zWZ54VviaoQPsRT8%2BgWM%2BoRk5nUpOkg@mail.gmail.com> <5178F72F.90008@freebsd.org>
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On Thu, Apr 25, 2013 at 11:28 AM, Andre Oppermann <andre@freebsd.org> wrote: > > > Again one has to be really careful drawing any firm conclusions from this > as it was measured on a Pentium4 and UP kernel (GENERIC would add WITNESS > and INVARIANT overhead as well). > > The Pentium4 is about the worst micro-architecture when it comes to locks > and easily regresses. At the same time modern Intel Core i[3-7] and AMD64 > may actually improve with these changes. Unless more recent micro-archs > have been shown to exhibit the same regression we can't claim this change > was bad (other than for Pentium4). OK, here are the results of the same bench on another server (HP ProLiant DL320 G5): - Dual Core: Intel Xeon CPU 3050 2.13GHz (2133.45-MHz K8-class CPU) - NIC changed to dual 82571EB Graph: http://gugus69.free.fr/freebsd/benchs/current2/current-pps.png gnuplot data: http://gugus69.free.fr/freebsd/benchs/current2/plot/ ministat data: http://gugus69.free.fr/freebsd/benchs/current2/ministat/ raw data: http://gugus69.free.fr/freebsd/benchs/current2/raw/ Notice the Glebius' explanation regarding a unique one-flow test and the new pf-smp behavior: http://lists.freebsd.org/pipermail/freebsd-net/2013-April/035417.html Regards, Olivier
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