On 2021/11/8 11:54, Fengnan Chang wrote:
In my test, serial io for compress file will make multithread small write
performance drop a lot.
I'm try to fingure out why we need __should_serialize_io, IMO, we use
__should_serialize_io to avoid deadlock or try to
improve sequential performance, but I don't understand why we should do this for
It was introduced to avoid fragmentation of file blocks.
compressed file. In my test, if we just remove this, write same file in
multithread will have problem, but parallel write different files in multithread
What do you mean by "write same file in multithread will have problem"?
Thanks,
is ok. So I think maybe we should use another lock to allow write different
files in multithread.
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