|
 |
d1681e |
From 4448795af501355f3893aed05551ee62551e8438 Mon Sep 17 00:00:00 2001
|
|
|
d1681e |
From: Milind Changire <mchangir@redhat.com>
|
|
|
d1681e |
Date: Fri, 13 Apr 2018 14:51:32 +0530
|
|
|
d1681e |
Subject: [PATCH 256/260] rpc: set listen-backlog to high value
|
|
|
d1681e |
|
|
|
d1681e |
Problem:
|
|
|
d1681e |
On node reboot, when glusterd starts volumes rapidly, there's a flood of
|
|
|
d1681e |
connections from the bricks to glusterd and from the self-heal daemons
|
|
|
d1681e |
to the bricks. This causes SYN Flooding and dropped connections when the
|
|
|
d1681e |
listen-backlog is not enough to hold the pending connections to
|
|
|
d1681e |
compensate for the rate at which connections are accepted by the RPC
|
|
|
d1681e |
layer.
|
|
|
d1681e |
|
|
|
d1681e |
Solution:
|
|
|
d1681e |
Increase the listen-backlog value to 1024. This is a partial solution.
|
|
|
d1681e |
Part of the solution is to rearm the listener socket early for quicker
|
|
|
d1681e |
accept() of connections.
|
|
|
d1681e |
See commit 6964640a977cb10c0c95a94e03c229918fa6eca8 (change 19833)
|
|
|
d1681e |
|
|
|
d1681e |
mainline:
|
|
|
d1681e |
> Reviewed-on: https://review.gluster.org/19836
|
|
|
d1681e |
> Change-Id: I56781149919dd6e18cc43884234c6f60f2c93f88
|
|
|
d1681e |
> fixes: bz#1564600
|
|
|
d1681e |
> Signed-off-by: Milind Changire <mchangir@redhat.com>
|
|
|
d1681e |
|
|
|
d1681e |
Change-Id: I1d7ac940eb5410cdbf7508a24bfdfc052b35170b
|
|
|
d1681e |
BUG: 1563804
|
|
|
d1681e |
Signed-off-by: Milind Changire <mchangir@redhat.com>
|
|
|
d1681e |
Reviewed-on: https://code.engineering.redhat.com/gerrit/135557
|
|
|
d1681e |
Tested-by: RHGS Build Bot <nigelb@redhat.com>
|
|
|
d1681e |
Reviewed-by: Raghavendra Gowdappa <rgowdapp@redhat.com>
|
|
|
d1681e |
Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
|
|
|
d1681e |
---
|
|
|
d1681e |
rpc/rpc-transport/socket/src/socket.c | 7 +++++++
|
|
|
d1681e |
1 file changed, 7 insertions(+)
|
|
|
d1681e |
|
|
|
d1681e |
diff --git a/rpc/rpc-transport/socket/src/socket.c b/rpc/rpc-transport/socket/src/socket.c
|
|
|
d1681e |
index 157b5b7..a6be911 100644
|
|
|
d1681e |
--- a/rpc/rpc-transport/socket/src/socket.c
|
|
|
d1681e |
+++ b/rpc/rpc-transport/socket/src/socket.c
|
|
|
d1681e |
@@ -4613,6 +4613,13 @@ struct volume_options options[] = {
|
|
|
d1681e |
.min = GF_MIN_SOCKET_WINDOW_SIZE,
|
|
|
d1681e |
.max = GF_MAX_SOCKET_WINDOW_SIZE
|
|
|
d1681e |
},
|
|
|
d1681e |
+ { .key = {"transport.listen-backlog"},
|
|
|
d1681e |
+ .type = GF_OPTION_TYPE_SIZET,
|
|
|
d1681e |
+ .description = "This option uses the value of backlog argument that "
|
|
|
d1681e |
+ "defines the maximum length to which the queue of "
|
|
|
d1681e |
+ "pending connections for socket fd may grow.",
|
|
|
d1681e |
+ .default_value = "1024",
|
|
|
d1681e |
+ },
|
|
|
d1681e |
{ .key = {"transport.tcp-user-timeout"},
|
|
|
d1681e |
.type = GF_OPTION_TYPE_INT,
|
|
|
d1681e |
.default_value = "0"
|
|
|
d1681e |
--
|
|
|
d1681e |
1.8.3.1
|
|
|
d1681e |
|