async io writeav setting

Discussion in 'General' started by anewday, Nov 4, 2008.

  1. Tony

    Tony Member

    We're running it on one of our machines with i/o spikes that at times slowed down lsws. With 4.1b1 it seems to be holding up much better. The load average thus far has been lower but that may not be related. I'll check it in a few days and see if graphs back it up over an extended period of time.
  2. anewday

    anewday Moderator

    Any downside in using AIO on a server with low disk I/O?
  3. mistwang

    mistwang LiteSpeed Staff

    use a bit more CPU cycles.
  4. mistwang

    mistwang LiteSpeed Staff

    4.1b1 has been updated to take advantage of sendfile() as well as AIO. So, on a server with low disk I/O, there is no much difference now.
  5. anewday

    anewday Moderator

    I noticed that this is in 4.0.4 too. Is it a good idea to enable both sendfile() and AIO?

    Any updates to this?
  6. Tony

    Tony Member


    There were some bugs that were causing some instabilities so we reverted back to the latest stable version. Was strange we ran it for weeks then out of the blue got hit by a few crippling bugs unfortunately.
  7. anewday

    anewday Moderator

    Which bugs? Maybe you can try 4.0.4 now.
  8. mistwang

    mistwang LiteSpeed Staff

    AIO is only available in 4.1b1 release.
    Sendfile() is always recommended as it works together with AIO.
  9. anewday

    anewday Moderator

    I see AIO as an option in 4.0.4
  10. mistwang

    mistwang LiteSpeed Staff

    It has no effect for 4.0.4.
  11. anewday

    anewday Moderator

    When we expect 4.1 to be available?
  12. mistwang

    mistwang LiteSpeed Staff

    4.1RC1 will be available in a few days.
  13. anewday

    anewday Moderator

    Great, I will wait before putting up the multimedia files for download to our members. So, 4.1RC1 will be the latest version of 4.0.x plus AIO feature? Thanks George.
    Last edited: Jun 1, 2009
  14. mistwang

    mistwang LiteSpeed Staff

    As well as support for upload progress bar. May or may not include the new realtime status page, depends on our progress.
  15. anewday

    anewday Moderator

    A few days has past, any updates? :D
  16. auser

    auser Super Moderator

  17. anewday

    anewday Moderator

    That's not RC1 :p
  18. mistwang

    mistwang LiteSpeed Staff

    probably be identical, just give 4.1b1 a try if you want to test AIO feature.

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