1. 05 Oct, 2011 25 commits
  2. 04 Oct, 2011 3 commits
  3. 03 Oct, 2011 2 commits
  4. 30 Sep, 2011 4 commits
  5. 29 Sep, 2011 4 commits
  6. 28 Sep, 2011 2 commits
    • Mike Hibler's avatar
      Update with a couple of items that came up recently. · 1f54baef
      Mike Hibler authored
      Also update the DONE status on a few things.
      1f54baef
    • Mike Hibler's avatar
      Add client '-f' option for using O_DIRECT open mode for the output device. · 46a62612
      Mike Hibler authored
      On Linux, device IO goes through the buffer cache by default. This makes
      frisbee run really fast...until it closes the output device. Then it sits
      for minutes while it flushes disk data out of the cache. This is
      technically okay, but wasteful, since frisbee allocates its own memory
      for caching disk write data. By using direct IO on the output device,
      writes do not go through the cache.
      
      Aren't two caches better than one? No. They can compete for memory and it
      just causes an extra data copy. Frisbee is faster when using O_DIRECT.
      
      Note that this change is complicated somewhat because Linux requires that
      the IO buffer for an O_DIRECT opened file be sector aligned. So we play
      some games to do this.
      
      This should have no effect on FreeBSD where device writes don't go through
      the buffer cache.
      46a62612