From: trondmy@gmail.com
To: Steve Dickson <SteveD@redhat.com>
Cc: linux-nfs@vger.kernel.org
Subject: [PATCH v2] nfsd: allow more than 64 backlogged connections
Date: Fri, 8 Mar 2024 13:02:23 -0500 [thread overview]
Message-ID: <20240308180223.2965601-1-trond.myklebust@hammerspace.com> (raw)
From: Trond Myklebust <trond.myklebust@hammerspace.com>
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@hammerspace.com>
---
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
next reply other threads:[~2024-03-08 18:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-08 18:02 trondmy [this message]
2024-03-08 18:48 ` [PATCH v2] nfsd: allow more than 64 backlogged connections Jeff Layton
2024-03-08 18:56 ` Chuck Lever
2024-03-11 7:55 ` Cedric Blancher
2024-04-11 19:11 ` Trond Myklebust
2024-04-12 1:56 ` Hanxiao Chen (Fujitsu)
2024-05-09 13:31 ` Jeff Layton
2024-05-10 11:27 ` Steve Dickson
2024-05-10 13:18 ` Steve Dickson
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