And some iozone tests, with 2 child process, O_DIRECT and SYNC Mode
(full log on pastebin: http://pastebin.com/amTbjfdr).
All with:
O_DIRECT feature enabled
SYNC Mode.
Output is in Kbytes/sec
Min process = 2
Max process = 2
Throughput test with 2 processes
----- Record size 1k
Children see throughput for 2 initial writers = 11.50 KB/sec
Avg throughput per process = 5.75 KB/sec
Children see throughput for 2 rewriters = 12.45 KB/sec
Avg throughput per process = 6.22 KB/sec
----- Record size 8k
Children see throughput for 2 initial writers = 100.18 KB/sec
Avg throughput per process = 50.09 KB/sec
Children see throughput for 2 rewriters = 75.27 KB/sec
Avg throughput per process = 37.64 KB/sec
----- Record size 16k
Children see throughput for 2 initial writers = 277.43 KB/sec
Avg throughput per process = 138.71 KB/sec
Children see throughput for 2 rewriters = 224.98 KB/sec
Avg throughput per process = 112.49 KB/sec
----- Record size 32k
Children see throughput for 2 initial writers = 398.72 KB/sec
Avg throughput per process = 199.36 KB/sec
Children see throughput for 2 rewriters = 204.58 KB/sec
Avg throughput per process = 102.29 KB/sec
----- Record size 64k
Children see throughput for 2 initial writers = 406.26 KB/sec
Avg throughput per process = 203.13 KB/sec
Children see throughput for 2 rewriters = 447.78 KB/sec
Avg throughput per process = 223.89 KB/sec
----- Record size 128k
Children see throughput for 2 initial writers = 1711.68 KB/sec
Avg throughput per process = 855.84 KB/sec
Children see throughput for 2 rewriters = 1563.11 KB/sec
Avg throughput per process = 781.56 KB/sec
----- Record size 256k
Children see throughput for 2 initial writers = 3400.94 KB/sec
Avg throughput per process = 1700.47 KB/sec
Children see throughput for 2 rewriters = 2532.04 KB/sec
Avg throughput per process = 1266.02 KB/sec
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https://bugs.launchpad.net/bugs/893450
Title:
libvirt fails to start correctly because LVM is not ready
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