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sys_attrs_presto(5)
NAME
  sys_attrs_presto - presto subsystem attributes

DESCRIPTION
  This reference page lists and describes attributes for the Prestoserve
  (presto) kernel subsystem. Refer to the sys_attrs(5) reference page for an
  introduction to the topic of kernel subsystem attributes.

  The Prestoserve product consists of optional hardware (NVRAM) and software
  that must be installed on your system.  See the Guide to Prestoserve for
  details on Prestoserve. See the System Configuration and Tuning manual for
  information about Prestoserve within the context of managing file system
  performance.

  presto_buffer_hash_size
      Size, in bytes, of the Prestoserve buffer hash table.

      Default value: 256 (bytes)

      Minimum value: 0

      Maximum value: 65,536 (64 KB)

      Increasing the value of the presto_buffer_hash_size attribute may
      improve throughput by decreasing Prestoserve lock contention.

  prmetaonly
      A value that controls whether Prestoserve will cache only UFS and AdvFS
      file-system metadata or both file-system metadata and synchronous-write
      data. If the attribute is set to 1, Prestoserve caches only file-system
      metadata. If the attribute is set to 0 (zero), both file-system
      metadata and synchronous-write data are cached.

      Default value: 0

      Setting prmetaonly to 1 may improve the performance of applications
      that access many small files, or applications that access a large
      amount of file-system metadata but do not reread recently written data.

SEE ALSO
  sys_attrs(5)

  Guide to Prestoserve

  System Configuration and Tuning

Index for Section 5

Alphabetical listing for S

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