path: root/rpc/rpc-transport
diff options
authorMilind Changire <>2018-04-09 11:26:05 +0530
committerRaghavendra G <>2018-04-13 03:23:47 +0000
commit31da3f1d8513b10d0449a1855fbad5060bd6191d (patch)
tree9a91b13f4843ebe4a0d91bf9c11236ace6fe41d3 /rpc/rpc-transport
parent1f0765242a689980265c472646c64473a92d94c0 (diff)
rpc: set listen-backlog to high value
Problem: On node reboot, when glusterd starts volumes rapidly, there's a flood of connections from the bricks to glusterd and from the self-heal daemons to the bricks. This causes SYN Flooding and dropped connections when the listen-backlog is not enough to hold the pending connections to compensate for the rate at which connections are accepted by the RPC layer. Solution: Increase the listen-backlog value to 1024. This is a partial solution. Part of the solution is to rearm the listener socket early for quicker accept() of connections. See commit 6964640a977cb10c0c95a94e03c229918fa6eca8 (change 19833) Change-Id: I62283d1f4990dd43839f9a6932cf8a36effd632c fixes: bz#1564600 Signed-off-by: Milind Changire <>
Diffstat (limited to 'rpc/rpc-transport')
1 files changed, 1 insertions, 1 deletions
diff --git a/rpc/rpc-transport/socket/src/socket.c b/rpc/rpc-transport/socket/src/socket.c
index a000b26e515..34bdbdea9d0 100644
--- a/rpc/rpc-transport/socket/src/socket.c
+++ b/rpc/rpc-transport/socket/src/socket.c
@@ -4794,7 +4794,7 @@ struct volume_options options[] = {
.description = "This option uses the value of backlog argument that "
"defines the maximum length to which the queue of "
"pending connections for socket fd may grow.",
- .default_value = "10",
+ .default_value = "1024",
{ .key = {"transport.tcp-user-timeout"},