From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
When creating a listener socket to be handed to /proc/fs/nfsd/portlist,
we currently limit the number of backlogged connections to 64. Since
that value was chosen in 2006, the scale at which data centres operate
has changed significantly. Given a modern server with many thousands of
clients, a limit of 64 connections can create bottlenecks, particularly
at at boot time.
Let's use the POSIX-sanctioned maximum value of SOMAXCONN.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
v2: Use SOMAXCONN instead of a value of -1.
utils/nfsd/nfssvc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/utils/nfsd/nfssvc.c b/utils/nfsd/nfssvc.c
index 46452d972407..9650cecee986 100644
--- a/utils/nfsd/nfssvc.c
+++ b/utils/nfsd/nfssvc.c
@@ -205,7 +205,8 @@ nfssvc_setfds(const struct addrinfo *hints, const char *node, const char *port)
rc = errno;
goto error;
}
- if (addr->ai_protocol == IPPROTO_TCP && listen(sockfd, 64)) {
+ if (addr->ai_protocol == IPPROTO_TCP &&
+ listen(sockfd, SOMAXCONN)) {
xlog(L_ERROR, "unable to create listening socket: "
"errno %d (%m)", errno);
rc = errno;
--
2.44.0
