diff options
| author | mav <mav@FreeBSD.org> | 2015-04-19 11:34:41 +0000 |
|---|---|---|
| committer | mav <mav@FreeBSD.org> | 2015-04-19 11:34:41 +0000 |
| commit | d9ba2b8e840dee9f2a11552ae25b13cbf7acd2aa (patch) | |
| tree | 74d51f92847e5b7078c3b760814b492a6f41c816 /sys/fs | |
| parent | 9e3dd6e843273a2394b666326f7de6f6a5ef084e (diff) | |
| download | FreeBSD-src-d9ba2b8e840dee9f2a11552ae25b13cbf7acd2aa.zip FreeBSD-src-d9ba2b8e840dee9f2a11552ae25b13cbf7acd2aa.tar.gz | |
Change wcommitsize default from one empirical value to another.
The new value is more predictable with growing RAM size:
hibufspace maxvnodes old new
i386:
256MB 32980992 15800 2198732 2097152
2GB 94027776 107677 878764 4194304
amd64:
256MB 32980992 15800 2198732 2097152
1GB 114114560 68062 1678155 4194304
4GB 217055232 111807 1955452 4194304
16GB 1717846016 337308 5097465 16777216
64GB 1734918144 1164427 1490479 16777216
256GB 1734918144 4426453 391983 16777216
Reviewed by: rmacklem
MFC after: 2 weeks
Diffstat (limited to 'sys/fs')
| -rw-r--r-- | sys/fs/nfsclient/nfs_clvfsops.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/sys/fs/nfsclient/nfs_clvfsops.c b/sys/fs/nfsclient/nfs_clvfsops.c index f6f9f23..964ea1f 100644 --- a/sys/fs/nfsclient/nfs_clvfsops.c +++ b/sys/fs/nfsclient/nfs_clvfsops.c @@ -1324,10 +1324,13 @@ mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam, nmp->nm_timeo = NFS_TIMEO; nmp->nm_retry = NFS_RETRANS; nmp->nm_readahead = NFS_DEFRAHEAD; - if (desiredvnodes >= 11000) - nmp->nm_wcommitsize = hibufspace / (desiredvnodes / 1000); - else - nmp->nm_wcommitsize = hibufspace / 10; + + /* This is empirical approximation of sqrt(hibufspace) * 256. */ + nmp->nm_wcommitsize = NFS_MAXBSIZE / 256; + while ((long)nmp->nm_wcommitsize * nmp->nm_wcommitsize < hibufspace) + nmp->nm_wcommitsize *= 2; + nmp->nm_wcommitsize *= 256; + if ((argp->flags & NFSMNT_NFSV4) != 0) nmp->nm_minorvers = minvers; else |
