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  1. Lustre
  2. LU-13134

try to use slab allocation for cl_page

Details

    • Improvement
    • Resolution: Fixed
    • Minor
    • Lustre 2.14.0
    • None
    • None
    • 9223372036854775807

    Description

      Currently we use kmalloc for cl_page allocation, this is because
      cl_page size could be different with different objects(normal clio, obdecho objects)

      for most of cases we have 400+ bytes cl_page, kmalloc use 512 bytes slab behind, so instead of doing this behind, We just try to use private slab pool directly(512 bytes).

      This make much sesne especially for Direct IO since it try to allocate/free cl_page very frequently.

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-14711 Canceling lock with a lot of cached data can take a lot of time

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-10257 vvp_lock, lov_page, and lovsub_{lock,page} are (more or less) unused

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. LU-10994 remove unused page layers

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

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              wshilong Wang Shilong (Inactive)
              wshilong Wang Shilong (Inactive)
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                Created:
                Updated:
                Resolved: