Date: Wed, 11 Feb 2009 20:07:56 +0200 From: "Markus Kovero" <mui@mui.fi> To: "'Bradley Radjoo'" <Bradley.Radjoo@is.co.za>, <freebsd-performance@freebsd.org> Subject: RE: Extremely slow write speeds to disk : FreeBSD 7.1 and Dell SAS 6/iR Adapter Message-ID: <153301c98c73$aa948e80$ffbdab80$@fi> In-Reply-To: <89D2AE9E4EAAB34FABDBF2913867C62F1CB4B133@ZABRYSVISEX04.af.didata.local> References: <89D2AE9E4EAAB34FABDBF2913867C62F1CB4B133@ZABRYSVISEX04.af.didata.local>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi, have you tried difference between UP and SMP kernels, years ago there were serious performance hit with SMP-kernel and adaptec/dell perc Yours Markus Kovero -----Original Message----- From: owner-freebsd-performance@freebsd.org [mailto:owner-freebsd-performance@freebsd.org] On Behalf Of Bradley Radjoo Sent: 11. helmikuuta 2009 17:18 To: freebsd-performance@freebsd.org Subject: Extremely slow write speeds to disk : FreeBSD 7.1 and Dell SAS 6/iR Adapter Greetings, Please can you assist. I have attempted most of the popular BSD Variants such as NetBSD, Open BSD, FreeBSD... The only distrubution that seems to work on the is Dell SAS 6/iR Adapter is FreeBSD 7.1 Firmware version & date : 9/29/2008 00.25.47.00 But the issue is that writing to disk is extremely slow...i.e. 14Mb per second.... If I install any other linux distribution, like CentOS, write speek is the way it should be..it averages around 190Mb+ per second I was hoping if it were at all possible for you to assist me in with a later RAID Controller Driver for the SAS 6/iR Adapter This is on a Dell PowerEdge R300 Server. BIOS Version 1.3.0 Running Raid 1 (ext3) NOTE : - Disabling ACPI does not make a difference - I do have the latest Firmware across the hardware Kind Regards, Bradley Please note: This email and its content are subject to the disclaimer as displayed at the following link http://www.is.co.za/legal/E-mail+Confidentiality+Notice+and+Disclaimer.htm. Should you not have Web access, send a mail to disclaimers@is.co.za and a copy will be emailed to you. _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?153301c98c73$aa948e80$ffbdab80$>