[Bug 1098211] [NEW] Low default for tcp_slot_table_entries

[Michael Gutteridge]

Public bug reported:

The value for /proc/sys/sunrpc/tcp_slot_table_entries seems unusually
low on 12.04.1LTS.  The default seems to be 2:

root at g:~# sysctl sunrpc.tcp_slot_table_entries
sunrpc.tcp_slot_table_entries = 2
root at g:~# sysctl sunrpc.udp_slot_table_entries
sunrpc.udp_slot_table_entries = 16

NFS documentation indicates that the default should be 16.  Early
indications from my own testing is that increasing this shows an
improvement in performance.

** Affects: nfs-utils (Ubuntu)
     Importance: Undecided
         Status: New

** Package changed: ubuntu => nfs-utils (Ubuntu)

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https://bugs.launchpad.net/bugs/1098211

Title:
  Low default for tcp_slot_table_entries

Status in “nfs-utils” package in Ubuntu:
  New

Bug description:
  The value for /proc/sys/sunrpc/tcp_slot_table_entries seems unusually
  low on 12.04.1LTS.  The default seems to be 2:

  root at g:~# sysctl sunrpc.tcp_slot_table_entries
  sunrpc.tcp_slot_table_entries = 2
  root at g:~# sysctl sunrpc.udp_slot_table_entries
  sunrpc.udp_slot_table_entries = 16

  NFS documentation indicates that the default should be 16.  Early
  indications from my own testing is that increasing this shows an
  improvement in performance.

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