V8 patch runs good.
The iops is 33032. If I just comment the usleep(100) in the master, I
can get iops 35245.
The CPU usage about the two test is same 120%.
So maybe this patch could be better!
Belong to the master, this patch is perfect enough!!
2014-10-27 23:53 GMT+08:00 Jens Axboe <axboe@xxxxxxxxx>:
> On 10/27/2014 09:45 AM, Ketor D wrote:
>> The return code is 0 if success.I mod the code a bit and then run fio very well.
>> I think if you fix this bug, the path will be nearly pefect!!
>>
>> ret = rbd_aio_get_return_value(fri->completion);
>> //printf("ret=%ld\n", ret);
>> //if (ret != (int) io_u->xfer_buflen) {
>> if (ret != 0) {
>> if (ret >= 0) {
>> io_u->resid = io_u->xfer_buflen - ret;
>> io_u->error = 0;
>> } else
>> io_u->error = ret;
>> }
>
> Weird, so it does not do partial completions I assume. Modified -v8 to
> take that into account, hopefully this just works out-of-the-box.
>
> What does the performance numbers look like for your sync test with this?
>
> --
> Jens Axboe
>
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