On 10/01/16 16:00, Richard Weinberger wrote: > On Mon, Dec 21, 2015 at 8:04 PM, Anton Ivanov > <anton.iva...@kot-begemot.co.uk> wrote: >> Hi list, hi Richard, >> >> This rather primitive patchset pushes disk IO by ~ 15%. >> >> dd to /dev/null on a host memory cached 16G sparse disk image with >> ubuntu on it goes from 512MB/s on my machine to 580MB/s. >> >> Part 2 will be ring buffers and read/write poll loop in the io_thread as >> well as elimination of "partial read/write" workarounds. While it does >> not push disk benchmarks a lot it makes UML more responsive. >> >> Part 3 will be merging adjacent IO transactions (by file location) via >> vector IO. This pushes trhoughput even further by quite a bit. >> >> While I can try to submit all of that in one go, I'd rather submit it in >> chunks so it is easier to review even if this will result in patch churn >> (the whole do_safe_read malarkey will bite the bullet once part 2 is out). > Is this already stable enough for this merge window? > At least checkpatch.pl dislikes part 1. :( > You can leave this one out. I will be working further on this to squeeze ~ 10% more and introduce vector IO.
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