Date: Wed, 22 Mar 2006 13:32:29 +0200 From: "Halid Faith" <maslak@ihlas.net.tr> To: <freebsd-questions@freebsd.org> Subject: How do I test disk performance in Freebsd60 ? Message-ID: <143f01c64da4$5004b960$dc96eed5@ihlasnetym>
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I use FreeBSD60 on Dell1600 SC ( 2gbyte Ram 4 CPU ) amr0: <LSILogic MegaRAID 1.51> mem 0xfcc00000-0xfcc0ffff irq 21 at device 2.0 on pci2 amr0: <LSILogic PERC 4/SC> Firmware 351X, BIOS 1.10, 64MB RAM I have 3 scsi disks that each about 70 Gbyte based RAID5. That is Total capacity nearly 140 Gbyte. I want to test disk / raid card. I tried below command 10 times while I 'm root date && dd if=/dev/zero of=deleteme.now bs=64k count=300 && rm deleteme.now && date 1 - 19660800 bytes transferred in 3.420916 secs (5747232 bytes/sec) 2 - 19660800 bytes transferred in 3.318186 secs (5925165 bytes/sec) 3 - 19660800 bytes transferred in 1.325308 secs (14834893 bytes/sec) 4 - 19660800 bytes transferred in 1.475633 secs (13323637 bytes/sec) 5 - 19660800 bytes transferred in 1.458992 secs (13475605 bytes/sec) 6 - 19660800 bytes transferred in 1.373914 secs (14310066 bytes/sec) 7 - 19660800 bytes transferred in 1.597467 secs (19307485 bytes/sec) 8 - 19660800 bytes transferred in 1.308806 secs (15021937 bytes/sec) 9 - 19660800 bytes transferred in 1.324031 secs (14849201 bytes/sec) 10- 19660800 bytes transferred in 1.438717 secs (13665510 bytes/sec) As you see the values of bytes/sec is not stable very changeable. I wonder Do disks or the raid card work properly ? Thanks
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