Date: Fri, 6 May 2005 13:09:34 +0300 (EEST) From: Anton Turygin <pa3op@tsua.net> To: freebsd-scsi@freebsd.org Subject: Adaptec 2120S FreeBSD 4.11 poor performance Message-ID: <20050506130002.L13748@colt.tsua.net>
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Goodafternoon. I have a server with FreeBSD 4.11 inttalled. I'm using an Adaptec 2120S with RAID 5 configured on it. #uname -srm FreeBSD 4.11-RELEASE-p4 i386 #aaccli AAC0> controller details Executing: controller details Controller Information ---------------------- Remote Computer: S Device Name: S Controller Type: No Info Access Mode: READ-WRITE Controller Serial Number: Last Six Digits = C00DC3 Number of Buses: 1 Devices per Bus: 15 Controller CPU: Unknown Controller CPU Speed: 100 Mhz Controller Memory: 64 Mbytes Battery State: Not Present Component Revisions ------------------- CLI: 1.0-0 (Build #5263) API: 1.0-0 (Build #5263) Miniport Driver: 4.1-0 (Build #7244) Controller Software: 4.1-0 (Build #7244) Controller BIOS: 4.1-0 (Build #7244) Controller Firmware: (Build #7244) Controller Hardware: 2.64 AAC0> disk list Executing: disk list C:ID:L Device Type Blocks Bytes/Block Usage Shared Rate ------ -------------- --------- ----------- ---------------- ------ ---- 0:00:0 Disk 143374744 512 Initialized NO 320 0:01:0 Disk 143374744 512 Initialized NO 320 0:02:0 Disk 143374744 512 Initialized NO 320 AAC0> While: #dd if=/dev/zero of=./file #iostat -w 1 -d aacd0 aacd0 KB/t tps MB/s 0.00 0 0.00 9.00 6 0.05 9.00 6 0.05 13.33 3 0.04 32.20 89 2.80 30.59 114 3.41 44.46 69 2.98 54.24 67 3.57 47.08 96 4.43 48.07 91 4.28 54.02 93 4.92 59.50 87 5.07 57.01 86 4.77 60.22 88 5.19 # The speed in the array doesn't raise over 7 MB/s. Can anyone help me to figure out? Thanks in advance. -- RAZ-UANIC RAZ-RIPE
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