diff options
| author | Chuck Lever <cel@netapp.com> | 2006-03-20 13:44:13 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-03-20 13:44:13 -0500 |
| commit | d9ef5a8c26aab09762afce43df64736720b4860e (patch) | |
| tree | 01ec0e16b19d7e418f26f1218113bb0f90b1a2e1 /include/linux/nfs_fs_sb.h | |
| parent | c8bded96aa8735823e53c95a26177987ebb19a90 (diff) | |
NFS: introduce mechanism for tracking NFS client metrics
Add a per-superblock performance counter facility to the NFS client. This
facility mimics the counters available for block devices and for
networking. Expose these new counters via the new /proc/self/mountstats
interface.
Thanks to Andrew Morton and Trond Myklebust for their review and comments.
Test plan:
fsx and iozone on UP and SMP systems, with and without pre-emption. Watch
for memory overwrite bugs, and performance loss (significantly more CPU
required per op).
Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/nfs_fs_sb.h')
| -rw-r--r-- | include/linux/nfs_fs_sb.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index a522ab97358..d65e69a06b7 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -4,6 +4,8 @@ #include <linux/list.h> #include <linux/backing-dev.h> +struct nfs_iostats; + /* * NFS client parameters stored in the superblock. */ @@ -12,6 +14,7 @@ struct nfs_server { struct rpc_clnt * client_sys; /* 2nd handle for FSINFO */ struct rpc_clnt * client_acl; /* ACL RPC client handle */ struct nfs_rpc_ops * rpc_ops; /* NFS protocol vector */ + struct nfs_iostats * io_stats; /* I/O statistics */ struct backing_dev_info backing_dev_info; int flags; /* various flags */ unsigned int caps; /* server capabilities */ |