hardware

memtestosx

I just bought and downloaded memtestosx. Last login: Sun Jan 8 16:14:10 on ttys001 [dan@dent:~] $ /Volumes/memtest_422/memtest/memtest ; exit; Memtest version 4.22 (64-bit) Copyright (C) 2004 Charles Cazabon Copyright (C) 2004-2008 Tony Scaminaci (Macintosh port) Licensed under the GNU General Public License version 2 only NOTE: No command-line arguments have been specified Using defaults: Test all available memory, one test pass, no logfile Mac OS X 10.7.2 (11C74) running in multiuser mode Memory

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ZFS benchmarking ideas

I’m about to double the RAM in my ZFS system. It will go from 4GB to 8GB. Right now, I have: real memory = 4294967296 (4096 MB) avail memory = 4100382720 (3910 MB) I’m not interested in any big extensive benchmarks. I just want something simple. Hence: $ cd /storage/bonnie/ [dan@kraken:/storage/bonnie] $ ls -l total 0 [dan@kraken:/storage/bonnie] $ bonnie++ Writing a byte at a time…done Writing intelligently…done Rewriting…done Reading a byte at a

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Rebate!

Back in Feburary, I ordered a 720W PSU for $150. There was a $60 rebate with it. When the PSU arrived, I promptly filled out the form and put it in an envelope for mailing. Except, I didn’t mail it. I found that envelope a few weeks ago. What the hell. I mailed it. It was already stamped etc. Today I got a $60 VISA debate card. Win. Interestingly enough, I originally bought

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More RAID oddness

After running the 3Ware diagnostic script, the status of the array went to OK. A short time later, it reverted to this $ sudo /usr/local/sbin/tw_cli info c0 u0 Unit UnitType Status %RCmpl %V/I/M Port Stripe Size(GB) ———————————————————————— u0 RAID-0 OK – – – 64K 195.548 u0-0 UNKNOWN UNKNOWN – – p0 – 104.314 u0/v0 Volume – – – – – 195.548 But this differs from the web output (image) which is rather similar

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ZFS – some initial testing

I thought I’d run some simple tests, based on a tuning thread I found: # dd if=/dev/urandom of=./file1 bs=1m count=1024 1024+0 records in 1024+0 records out 1073741824 bytes transferred in 14.283206 secs (75175127 bytes/sec) And while the above was running: # zpool iostat 5 capacity operations bandwidth pool used avail read write read write ———- —– —– —– —– —– —– storage 1.25G 9.06T 0 3 95 402K storage 1.25G 9.06T 0 0

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