[PATCH 0/2] tweak knfsd session slot table sizing

["J. Bruce Fields" <bfields@redhat.com>]

From: "J. Bruce Fields" <bfields@redhat.com>

Current client and server defaults can limit NFSv4.1+ mounts to as few
as 4 per gigabytes of server RAM, and people have been running into the
limit on upgrading the protocol version from 4.0 to 4.1.

Bump the limit.  Also return smaller ca_maxrequests as the limit
approaches instead of waiting till we have to fail CREATE_SESSION
completely.

A few years ago Trond also posted some patches to dynamically resize
existing sessions as limits approach--I'll revisit those at some point
too.

The numbers chosen here are honestly still a little arbitrary, and we
may tweak them again if we see more problems.

--b.

J. Bruce Fields (2):
  nfsd: increase DRC cache limit
  nfsd: give out fewer session slots as limit approaches

 fs/nfsd/nfs4state.c | 5 +++++
 fs/nfsd/nfssvc.c    | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

-- 
2.13.5