Created attachment 654781 [details] random_write_8k_16.ffsb
(From discusison on irc), please delete the qcow2 image file before each run, to eliminate any caching effects. However, I doubt such effects are being seen in these results.
(In reply to comment #5) > (From discusison on irc), please delete the qcow2 image file before each > run, to eliminate any caching effects. However, I doubt such effects are > being seen in these results. Okay. Once the test result is done, i will put results here. Thanks xiaomei
Amit Shah There are about 40 qemu-kvm versions between qemu-kvm-295 (good result) and qemu-kvm-335 (bad result), and almost all of them have been removed from brew,any suggestion about bisect them ?
hi, all Try test the issue for 3 times on qemu-kvm-316 and get the results: 408 MB/s 422 MB/s 450MB/s On qemu-kvm-329 and get the results: 257MB/s 339 MB/s 282MB/s So we can narrow the version test, that is 316~329 qemu-kvm version, but it is removed from our brew now.
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Thanks for all the testing. So the fix is already in, closing. *** This bug has been marked as a duplicate of bug 916020 ***