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Implement a separate control for write gathering on NFSv3. This is turned
off for NFSv3 by default since write gathering seems to reduce performance for NFSv3 by up to 60%. Add sysctl knobs to control both variables.
This commit is contained in:
Doug Rabson
parent
5ae0f71815
commit
0160dedc65
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=25664
@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)nfs_serv.c 8.3 (Berkeley) 1/12/94
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* $Id: nfs_serv.c,v 1.40 1997/03/29 12:40:18 bde Exp $
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* $Id: nfs_serv.c,v 1.41 1997/05/10 16:12:03 dfr Exp $
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*/
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/*
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@ -96,6 +96,7 @@ extern enum vtype nv3tov_type[8];
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extern struct nfsstats nfsstats;
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int nfsrvw_procrastinate = NFS_GATHERDELAY * 1000;
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int nfsrvw_procrastinate_v3 = 0;
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int nfs_async;
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SYSCTL_INT(_vfs_nfs, OID_AUTO, async, CTLFLAG_RW, &nfs_async, 0, "");
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@ -929,7 +930,8 @@ nfsrv_writegather(ndp, slp, procp, mrq)
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nfsd->nd_mreq = NULL;
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nfsd->nd_stable = NFSV3WRITE_FILESYNC;
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cur_usec = (u_quad_t)time.tv_sec * 1000000 + (u_quad_t)time.tv_usec;
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nfsd->nd_time = cur_usec + nfsrvw_procrastinate;
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nfsd->nd_time = cur_usec +
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(v3 ? nfsrvw_procrastinate_v3 : nfsrvw_procrastinate);
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/*
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* Now, get the write header..
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95
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* $Id: nfs_syscalls.c,v 1.21 1997/04/27 20:01:23 wollman Exp $
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* $Id: nfs_syscalls.c,v 1.22 1997/04/30 09:51:37 dfr Exp $
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*/
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#include <sys/param.h>
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@ -86,6 +86,7 @@ extern int nqsrv_writeslack;
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extern int nfsrtton;
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extern struct nfsstats nfsstats;
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extern int nfsrvw_procrastinate;
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extern int nfsrvw_procrastinate_v3;
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struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock;
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static int nuidhash_max = NFS_MAXUIDHASH;
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@ -111,6 +112,8 @@ static int nfssvc_nfsd __P((struct nfsd_srvargs *,caddr_t,struct proc *));
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static int nfs_privport = 0;
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SYSCTL_INT(_vfs_nfs, NFS_NFSPRIVPORT, nfs_privport, CTLFLAG_RW, &nfs_privport, 0, "");
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SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay, CTLFLAG_RW, &nfsrvw_procrastinate, 0, "");
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SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay_v3, CTLFLAG_RW, &nfsrvw_procrastinate_v3, 0, "");
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/*
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* NFS server system calls
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@ -456,6 +459,7 @@ nfssvc_nfsd(nsd, argp, p)
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struct nfsrv_descript *nd = NULL;
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struct mbuf *mreq;
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int error = 0, cacherep, s, sotype, writes_todo;
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int procrastinate;
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u_quad_t cur_usec;
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#ifndef nolint
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@ -626,8 +630,12 @@ nfssvc_nfsd(nsd, argp, p)
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do {
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switch (cacherep) {
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case RC_DOIT:
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if (nd && (nd->nd_flag & ND_NFSV3))
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procrastinate = nfsrvw_procrastinate_v3;
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else
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procrastinate = nfsrvw_procrastinate;
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if (writes_todo || (nd->nd_procnum == NFSPROC_WRITE &&
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nfsrvw_procrastinate > 0 && !notstarted))
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procrastinate > 0 && !notstarted))
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error = nfsrv_writegather(&nd, slp,
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nfsd->nfsd_procp, &mreq);
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else
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95
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* $Id: nfs_syscalls.c,v 1.21 1997/04/27 20:01:23 wollman Exp $
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* $Id: nfs_syscalls.c,v 1.22 1997/04/30 09:51:37 dfr Exp $
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*/
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#include <sys/param.h>
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@ -86,6 +86,7 @@ extern int nqsrv_writeslack;
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extern int nfsrtton;
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extern struct nfsstats nfsstats;
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extern int nfsrvw_procrastinate;
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extern int nfsrvw_procrastinate_v3;
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struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock;
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static int nuidhash_max = NFS_MAXUIDHASH;
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@ -111,6 +112,8 @@ static int nfssvc_nfsd __P((struct nfsd_srvargs *,caddr_t,struct proc *));
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static int nfs_privport = 0;
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SYSCTL_INT(_vfs_nfs, NFS_NFSPRIVPORT, nfs_privport, CTLFLAG_RW, &nfs_privport, 0, "");
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SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay, CTLFLAG_RW, &nfsrvw_procrastinate, 0, "");
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SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay_v3, CTLFLAG_RW, &nfsrvw_procrastinate_v3, 0, "");
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/*
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* NFS server system calls
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@ -456,6 +459,7 @@ nfssvc_nfsd(nsd, argp, p)
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struct nfsrv_descript *nd = NULL;
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struct mbuf *mreq;
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int error = 0, cacherep, s, sotype, writes_todo;
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int procrastinate;
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u_quad_t cur_usec;
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#ifndef nolint
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@ -626,8 +630,12 @@ nfssvc_nfsd(nsd, argp, p)
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do {
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switch (cacherep) {
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case RC_DOIT:
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if (nd && (nd->nd_flag & ND_NFSV3))
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procrastinate = nfsrvw_procrastinate_v3;
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else
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procrastinate = nfsrvw_procrastinate;
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if (writes_todo || (nd->nd_procnum == NFSPROC_WRITE &&
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nfsrvw_procrastinate > 0 && !notstarted))
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procrastinate > 0 && !notstarted))
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error = nfsrv_writegather(&nd, slp,
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nfsd->nfsd_procp, &mreq);
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else
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)nfs_serv.c 8.3 (Berkeley) 1/12/94
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* $Id: nfs_serv.c,v 1.40 1997/03/29 12:40:18 bde Exp $
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* $Id: nfs_serv.c,v 1.41 1997/05/10 16:12:03 dfr Exp $
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*/
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/*
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@ -96,6 +96,7 @@ extern enum vtype nv3tov_type[8];
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extern struct nfsstats nfsstats;
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int nfsrvw_procrastinate = NFS_GATHERDELAY * 1000;
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int nfsrvw_procrastinate_v3 = 0;
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int nfs_async;
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SYSCTL_INT(_vfs_nfs, OID_AUTO, async, CTLFLAG_RW, &nfs_async, 0, "");
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@ -929,7 +930,8 @@ nfsrv_writegather(ndp, slp, procp, mrq)
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nfsd->nd_mreq = NULL;
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nfsd->nd_stable = NFSV3WRITE_FILESYNC;
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cur_usec = (u_quad_t)time.tv_sec * 1000000 + (u_quad_t)time.tv_usec;
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nfsd->nd_time = cur_usec + nfsrvw_procrastinate;
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nfsd->nd_time = cur_usec +
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(v3 ? nfsrvw_procrastinate_v3 : nfsrvw_procrastinate);
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/*
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* Now, get the write header..
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95
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* $Id: nfs_syscalls.c,v 1.21 1997/04/27 20:01:23 wollman Exp $
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* $Id: nfs_syscalls.c,v 1.22 1997/04/30 09:51:37 dfr Exp $
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*/
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#include <sys/param.h>
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@ -86,6 +86,7 @@ extern int nqsrv_writeslack;
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extern int nfsrtton;
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extern struct nfsstats nfsstats;
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extern int nfsrvw_procrastinate;
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extern int nfsrvw_procrastinate_v3;
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struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock;
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static int nuidhash_max = NFS_MAXUIDHASH;
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@ -111,6 +112,8 @@ static int nfssvc_nfsd __P((struct nfsd_srvargs *,caddr_t,struct proc *));
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static int nfs_privport = 0;
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SYSCTL_INT(_vfs_nfs, NFS_NFSPRIVPORT, nfs_privport, CTLFLAG_RW, &nfs_privport, 0, "");
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SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay, CTLFLAG_RW, &nfsrvw_procrastinate, 0, "");
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SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay_v3, CTLFLAG_RW, &nfsrvw_procrastinate_v3, 0, "");
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/*
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* NFS server system calls
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@ -456,6 +459,7 @@ nfssvc_nfsd(nsd, argp, p)
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struct nfsrv_descript *nd = NULL;
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struct mbuf *mreq;
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int error = 0, cacherep, s, sotype, writes_todo;
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int procrastinate;
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u_quad_t cur_usec;
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#ifndef nolint
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@ -626,8 +630,12 @@ nfssvc_nfsd(nsd, argp, p)
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do {
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switch (cacherep) {
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case RC_DOIT:
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if (nd && (nd->nd_flag & ND_NFSV3))
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procrastinate = nfsrvw_procrastinate_v3;
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else
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procrastinate = nfsrvw_procrastinate;
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if (writes_todo || (nd->nd_procnum == NFSPROC_WRITE &&
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nfsrvw_procrastinate > 0 && !notstarted))
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procrastinate > 0 && !notstarted))
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error = nfsrv_writegather(&nd, slp,
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nfsd->nfsd_procp, &mreq);
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else
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