Re: NFS on 2.6.0-test9:

[Trond Myklebust]

OK. That points squarely at the RTO timeout "inheritance" change.
There are 2 differences as it stands in 2.6.0 w.r.t. the 2.4.23-pre
code: the no upper limit, and the inheritance update algorithm.

Could you therefore try the following patch.

Cheers,
  Trond

diff -u --recursive --new-file linux-2.6.0-test9/include/linux/sunrpc/timer.h linux/include/linux/sunrpc/timer.h
--- linux-2.6.0-test9/include/linux/sunrpc/timer.h	2003-11-07 21:03:45.000000000 -0500
+++ linux/include/linux/sunrpc/timer.h	2003-11-09 16:55:43.000000000 -0500
@@ -25,9 +25,18 @@
 
 static inline void rpc_set_timeo(struct rpc_rtt *rt, int timer, int ntimeo)
 {
+	int *t;
 	if (!timer)
 		return;
-	rt->ntimeouts[timer-1] = ntimeo;
+	t = &rt->ntimeouts[timer-1];
+	if (ntimeo < *t) {
+		if (*t > 0)
+			(*t)--;
+	} else {
+		if (ntimeo > 8)
+			ntimeo = 8;
+		*t = ntimeo;
+	}
 }
 
 static inline int rpc_ntimeo(struct rpc_rtt *rt, int timer)
diff -u --recursive --new-file linux-2.6.0-test9/net/sunrpc/timer.c linux/net/sunrpc/timer.c
--- linux-2.6.0-test9/net/sunrpc/timer.c	2003-11-07 21:06:11.000000000 -0500
+++ linux/net/sunrpc/timer.c	2003-11-09 16:57:15.000000000 -0500
@@ -40,6 +40,7 @@
 		rt->srtt[i] = init;
 		rt->sdrtt[i] = RPC_RTO_INIT;
 	}
+	memset(rt->ntimeouts, 0, sizeof(rt->ntimeouts));
 }
 
 /*

-
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