@@ -282,11 +282,11 @@ tcp_max_ssthresh - INTEGER
Default: 0 (off)
tcp_max_syn_backlog - INTEGER
- Maximal number of remembered connection requests, which are
- still did not receive an acknowledgment from connecting client.
- Default value is 1024 for systems with more than 128Mb of memory,
- and 128 for low memory machines. If server suffers of overload,
- try to increase this number.
+ Maximal number of remembered connection requests, which have not
+ received an acknowledgment from connecting client.
+ The minimal value is 128 for low memory machines, and it will
+ increase in proportion to the memory of machine.
+ If server suffers from overload, try increasing this number.
tcp_max_tw_buckets - INTEGER
Maximal number of timewait sockets held by system simultaneously.
@@ -26,10 +26,11 @@
* but then some measure against one socket starving all other sockets
* would be needed.
- * It was 128 by default. Experiments with real servers show, that
+ * The minimum value of it is 128. Experiments with real servers show that
* it is absolutely not enough even at 100conn/sec. 256 cures most
- * of problems. This value is adjusted to 128 for very small machines
- * (<=32Mb of memory) and to 1024 on normal or better ones (>=256Mb).
+ * of problems.
+ * This value is adjusted to 128 for low memory machines,
+ * and it will increase in proportion to the memory of machine.
* Note : Dont forget somaxconn that may limit backlog too.
int sysctl_max_syn_backlog = 256;