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NFS: add RPC I/O statistics to /proc/self/mountstats

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NFS client now shows various RPC I/O metrics in /proc/self/mountstats.

Test plan:
Mount/umount while doing "cat /proc/self/mountstats", multiple iterations
of connectathon locking suite.  Test with NFS version 2, 3, and 4.

Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2006-03-20 13:44:22 -05:00 committed by Trond Myklebust
parent 11c556b3d8
commit 4ece3a2d18
1 changed files with 4 additions and 0 deletions
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4
fs/nfs/inode.c
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@ -26,6 +26,7 @@
#include <linux/unistd.h> #include <linux/unistd.h>
#include <linux/sunrpc/clnt.h> #include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/stats.h> #include <linux/sunrpc/stats.h>
#include <linux/sunrpc/metrics.h>
#include <linux/nfs_fs.h> #include <linux/nfs_fs.h>
#include <linux/nfs_mount.h> #include <linux/nfs_mount.h>
#include <linux/nfs4_mount.h> #include <linux/nfs4_mount.h>
@ -728,6 +729,9 @@ static int nfs_show_stats(struct seq_file *m, struct vfsmount *mnt)
seq_printf(m, "\n\tbytes:\t"); seq_printf(m, "\n\tbytes:\t");
for (i = 0; i < __NFSIOS_BYTESMAX; i++) for (i = 0; i < __NFSIOS_BYTESMAX; i++)
seq_printf(m, "%Lu ", totals.bytes[i]); seq_printf(m, "%Lu ", totals.bytes[i]);
seq_printf(m, "\n");
rpc_print_iostats(m, nfss->client);
return 0; return 0;
} }