Date: Fri, 20 Jun 2003 08:45:28 +0600 From: s_porotnikov@nojabrsk.ru To: freebsd-performance@freebsd.org Subject: freebsd-performance Digest, Vol 4, Issue 9 Message-ID: <1291187545875.20030620084528@nojabrsk.ru>
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> Interestingly enough, I found FreeBSD 4.8 to be faster at local disk > writes than FreeBSD 5.1. About 50% faster. On my system results of tests with FreeBSD 4.8 and FreeBSD 5.1 about same. Of course I used UFS2 filesystem on FreeBSD 5.1. > RAID0 is not really RAID since it does not provide any redundancy. I am understand. But I executed performance test. So redundancy may be achieved (in many cases) through elementary backup in simple case or VINUM mirror in other cases. I tested RAID 1+0 - results are identical. I not tested RAID-5 because now hard disks have low cost and using RAID-5 (on practice but not in theory) is unjustified. In many cases for low end solution, used hardware RAID-5 without expensive RAID controllers, having battery cache memory, bring to data loss. -- Best regards, Sergey G. Porotnikov mailto:s_porotnikov@nojabrsk.ru
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