RE: Extremely slow write speeds to disk : FreeBSD 7.1 and Dell SAS 6/iR Adapter

2009-02-11 Thread Markus Kovero
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-performa...@freebsd.org [mailto:owner-freebsd-performa...@freebsd.org] On Behalf Of

Re: SATA: RAID 5 controller recommendations

2005-11-03 Thread Markus Kovero
Actually, read performance drop is still there under FreeBSD 6.0 RC1 Yours Markus Kovero Mike Tancsa wrote: At 09:15 PM 02/11/2005, Michael VInce wrote: I have seen some network based SMP related performance problems vanish in 6.0 tests, admittedly I haven't done hard drive based tests

Re: SATA: RAID 5 controller recommendations

2005-11-02 Thread Markus Kovero
Dell's CERC sata raid thingy works fast for me but when I turn SMP on read performance drops 50%+ (raid1,raid5,raid10 and single volumes). I don't know if its aac problem or what. In leenox it works very well though. Yours Markus Kovero [EMAIL PROTECTED] wrote: At 09:17 PM 11/2/

SMP causes weird performance problems

2005-10-18 Thread Markus Kovero
are snappy. I just don't want linux. Ever. Again. (guys easily drawn into flame wars dont read that last one:) I've tried FreeBSD 5.4 and 6.0_BETA5, with and without adaptive_giant (I read it may cause great slowdowns). Any ideas, suggestions.