5 ms·
Performance seems ok to me. 6x500gb 7.2k sata raid10 + 96gb ssd, 8gb ram. Run began: Fri Mar 29 08:32:24 2013 Include fsync in write timing
by trotsky 13y ago
Performance seems ok to me. 6x500gb 7.2k sata raid10 + 96gb ssd, 8gb ram.
Run began: Fri Mar 29 08:32:24 2013
Include fsync in write timing
Include close in write timing
Command line used: iozone -ec -r 32 -s 16380m -l 2 -i 0 -i 1 -i 8
Throughput test with 2 processes
Each process writes a 16773120 Kbyte file in 32 Kbyte records
Parent sees throughput for 2 initial writers = 996073.19 KB/sec
Avg throughput per process = 499898.70 KB/sec
Parent sees throughput for 2 rewriters = 216128.36 KB/sec
Avg throughput per process = 108075.14 KB/sec
Parent sees throughput for 2 readers = 1232245.62 KB/sec
Avg throughput per process = 616353.25 KB/sec
Parent sees throughput for 2 re-readers = 1240045.15 KB/sec
Avg throughput per process = 620251.62 KB/sec
- dekhn 13y agothat's really not so impressive. you're just dumping extents down on an empty filesystem and re-reading them. you're really just measuring the fact that the FS isn't particularly getting in the way of using your hardware. Note also that rewriting drops to 108M/sec, which is pretty unimpressive.
- trotsky 13y ago216M/sec - rewrite is suffering from a striding mismatch there with the COW, bs is 32k while stripe is 128k. Consumer uses 1M. I'm wondering which volume manager and fs under linux you'd expect better performance from in this configuration?