Mailing List Archive

Author: phk
Date: 2007-09-21 15:18:10 +0200 (Fri, 21 Sep 2007)
New Revision: 1979

Modified:
trunk/varnish-cache/bin/varnishd/heritage.h
trunk/varnish-cache/bin/varnishd/mgt_param.c
Log:
Add an experimental runtime parameter for the lru_timeout.



Modified: trunk/varnish-cache/bin/varnishd/heritage.h
===================================================================
--- trunk/varnish-cache/bin/varnishd/heritage.h 2007-09-21 10:38:01 UTC (rev 1978)
+++ trunk/varnish-cache/bin/varnishd/heritage.h 2007-09-21 13:18:10 UTC (rev 1979)
@@ -120,6 +120,9 @@
/* Ping interval */
unsigned ping_interval;

+ /* LRU list ordering interval */
+ unsigned lru_timeout;
+
};

extern volatile struct params *params;

Modified: trunk/varnish-cache/bin/varnishd/mgt_param.c
===================================================================
--- trunk/varnish-cache/bin/varnishd/mgt_param.c 2007-09-21 10:38:01 UTC (rev 1978)
+++ trunk/varnish-cache/bin/varnishd/mgt_param.c 2007-09-21 13:18:10 UTC (rev 1979)
@@ -328,6 +328,15 @@
/*--------------------------------------------------------------------*/

static void
+tweak_lru_timeout(struct cli *cli, struct parspec *par, const char *arg)
+{
+ (void)par;
+ tweak_generic_timeout(cli, &master.lru_timeout, arg);
+}
+
+/*--------------------------------------------------------------------*/
+
+static void
tweak_auto_restart(struct cli *cli, struct parspec *par, const char *arg)
{

@@ -716,6 +725,14 @@
"it possible to attach a debugger to the child.\n"
MUST_RESTART,
"3", "seconds" },
+ { "lru_interval", tweak_lru_timeout,
+ "Grace period before object moves on LRU list.\n"
+ "Objects are only moved to the front of the LRU "
+ "list if they have not been moved there already inside "
+ "this timeout period. This reduces the amount of lock "
+ "operations necessary for LRU list access.\n"
+ EXPERIMENTAL,
+ "2", "seconds" },
{ "cc_command", tweak_cc_command,
"Command used for compiling the C source code to a "
"dlopen(3) loadable object.\n"