1. 12 May, 2003 11 commits
  2. 11 May, 2003 28 commits
  3. 10 May, 2003 1 commit
    • Jens Axboe's avatar
      [PATCH] dynamic request allocation · ac062f74
      Jens Axboe authored
      This patch adds dynamic allocation of request structures. Right now we
      are reserving 256 requests per initialized queue, which adds up to quite
      a lot of memory for even a modest number of queues. For the quoted 4000
      disk systems, it's a disaster.
      
      Instead, we mempool 4 requests per queue and put an upper limit on the
      number of requests that we will put in-flight as well. I've kept the 128
      read/write max in-flight limit for now. It is trivial to experiement
      with larger queue sizes now, but I want to change one thing at the time
      (the truncate scenario doesn't look all that good with a huge number of
      requests, for instance).
      
      Patch has been in -mm for a while, I'm running it here against stock 2.5
      as well. Additionally, it actually kills quite a bit of code as well
      ac062f74