Date: Tue, 4 Dec 2007 12:08:47 +0100 From: Gergely CZUCZY <phoemix@harmless.hu> To: Mike Tancsa <mike@sentex.net> Cc: Jeff Roberson <jroberson@chesapeake.net>, freebsd-performance@freebsd.org Subject: Re: mysql scaling questions Message-ID: <20071204110847.GA67306@harmless.hu> In-Reply-To: <200712040942.lB49glKZ021633@lava.sentex.ca> References: <20071129101729.GA57985@harmless.hu> <20071130143023.I884@192.168.1.107> <20071201163334.GA21709@harmless.hu> <200712012055.lB1Kt5IQ005728@lava.sentex.ca> <20071201205609.GA54238@harmless.hu> <200712012108.lB1L8qAd005766@lava.sentex.ca> <20071204092209.GA55785@harmless.hu> <200712040942.lB49glKZ021633@lava.sentex.ca>
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[-- Attachment #1 --] On Tue, Dec 04, 2007 at 04:40:55AM -0500, Mike Tancsa wrote: > At 04:22 AM 12/4/2007, Gergely CZUCZY wrote: > >On Sat, Dec 01, 2007 at 04:06:55PM -0500, Mike Tancsa wrote: > >> At 03:56 PM 12/1/2007, Gergely CZUCZY wrote: > >> >I don't quite understand the question. It's the very same box, with > >> >a dualboot configuration. > >> > >> Fire up the 3ware controller's RAID management software and make sure the same write caching strategy is set for FreeBSD and Linux. The driver my > >> default to different values. > >> > >> i.e. under "controller settings" make sure "write cache" and "queuing" are the same values for linux and freebsd. > >I fail to see such an option, not under the 3ware BIOS software, nor in the tw_cli interface. > > > >Could you be more specific on this? > > > >Note: in the BIOS i've seen WC turned on for all units, and there were no > >OS-specific options. > > > Hi, > Its not in the bios, but in the management daemon. On FreeBSD, go to /usr/ports/sysutils/3dm and install the daemon. Start up 3dm2, point > your browser to https://127.0.0.1:888 and login. Go to management menu and look at "controller settings" and there will be the values of write cache > and queuing and storsav. Make sure the values set there, are the same on Linux and FreeBSD. You can download the LINUX version from 3ware's website. Thank you very much, I've made it worked. In both FreeBSD and Linux the write cache seems to be turned on in the web-based management. However, I still don't think this is OS-specific, since I see no OS-specific options, and 3ware makes the devices available through SCSI, and WC is handled differently there. Sincerely, Gergely Czuczy mailto: gergely.czuczy@harmless.hu -- Weenies test. Geniuses solve problems that arise. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) owGFVc9vG0UUDi0IaRGInnp98iWH7tpr54eDkRMSh6aWkjbCDqXtAc3uztqj7M6Y mVk7LhckLhw4IFQQEkgIiSsSKHBDSPwD/Asc+Ac4w4X3Zje2Kyrwj9Xu7Jv3ffPN 99588vL1tWs3fvv+x0e3Pv70y+e+e/HX6FZeWCtHQc70VMigGYbNYLu9EW4H20E7 bLdfi9o7WykPm5vJ5tHZ1l5PSculDYbzCe+A5Re2McmYkK9DPGbacNstbBrseFdx h8JMlBFWKNkBITMh+eLdUDNpUq6DN2WsEiFHHXivUJYnwUQLaVmUcc+7J2FYcB8O eQzhpg+tMGwDs3jf2Qw7W1v7JxCEW2How4k45zBkMjYMZhrzdLxd2HeRrRZgXLPV 2GzQfB+OuB7xbA69h2e9hw+W4bsIN2C2gms+BRduI9zpf8Ptlogbna1tOHWIzf9D xF8fEiXXLa5eWA6FTLg2lskE7JjjIDckXx36dt24oSnXczAs5xCpCx9mwo6rTAyS gmWRUhZiJVMxKjRzk937Mui20AgycZk2ZgwfMNRqlWVcI8Bb+/1DyJlkI57jLoFR qXVRRChnuGhT4FPXo/mOxEwT7ZjFY9xDMBYh+WgOwgD6AVKl4bbm/GBw6FIcC1lc 1GGIsxMtcCmQz0tiCU9ZkVmwChKRojEIfsoyFGCVv6jzeikS1JbMCcsivqmtkKwt qfGaQ6+hnAWG1boe0KIWiyhxHNuMGLroFHlHJnHofUiZyIic4ZQ+HmMIqAnJ64NE xUtOS1kP+vcGC/koRGMFVMLZ2btxJvDZcp2ymDsI+vdUkSUwVwVEHHKFacyExyIV MSiJyYXZuwq9SxailJTQgYn1KSd6Eu73wBZa8oRm0aJYliFBYY0PlbMw9YwuUjnj D4IlkFsUid5thdUF7ggfr1efvjVuzRV6JBQmjorFwIqBEsZzsi9gbVVG8GHU9RRp 2SiMbkyUtqZh5qawIjONjSR3HIXEKkDalG+RZGCZtmRfjGr5MFEoYdcrKaJqGiKt Zob2QcHY2onpNBrNVrse4rfZ2dnZAZc7UyNB6Y4cixW2eClwj8oYdU61/2yXrago kGRUeqmykUqXVdH1xrzkR1Mq/7l7Y5U2bIo0ThaWXUlC1eMQ/KetqiSa93hh0kpT zPIAXROjKRM1k5liZf847t89e4dahhFkBa3y0p5Y6jM0t0D10H3DMZPnznauueRo bx/6ZKecJRyEhZnS5zzBLiSx69jxv2vaoeGq0eBVyZEVc0MCkzoLO1YWQfQgYoYn K/LX4Y6acaSA4CiPyLpeVjVHtD4ypAKgzrJiVx+MkDGnCZzcDM+wcmn6rlcWJjWI spMmfCpivGdTrG06cHBUq2I0hkFv0C9nYSkhIOqTZMh10ZmQ2bzcnrqHnwFx0Njh fc9b9PrHRfx47uWY26oOjMrheuyG38DzMs+4MfVx4XlBQBa5j6UriBq2/DoeGVIU hoygMtyIiVZIkPQcoymZFgaRP9q7/sIaHcxXp/qNa0/+WPvqlbc//P3RTz+///cP 05tPXlr/s/7L5eXa12bt284Xr96sPf/ZQf2v09EH33x+af8B =nmat -----END PGP SIGNATURE-----
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