Uploaded image for project: 'Lustre'
  1. Lustre
  2. LU-12179

allocate continuous pages when disabled page caches

XMLWordPrintable

    • Icon: Improvement Improvement
    • Resolution: Unresolved
    • Icon: Minor Minor
    • None
    • None
    • None
    • 9223372036854775807

      LU-11347: Do not use pagecache for SSD I/O when read/write cache are disabled, 

      this feature allocates the physical pages per OSS I/O thread in need at the runtime, it may result that  the many allocated pages are  not physical continuous. This may be not good for I/O merge in the block layer due to the limited segements per block I/O request.

      For testing purposes, we should pre-allocate continuous pages when OSS thread started as much as possible when disable page chace.

            qian_wc Qian Yingjin
            qian_wc Qian Yingjin
            Votes:
            0 Vote for this issue
            Watchers:
            5 Start watching this issue

              Created:
              Updated: