Author: ivoras
Date: Fri Jun 11 09:27:33 2010
New Revision: 209037
URL: http://svn.freebsd.org/changeset/base/209037
Log:
In another move to join with the age of the Fruitbat, increase SYSV
shared resources defaults beyond absolute minimums.
The new values are chosen mostly by magic. They are still fairly
small and will need increasing for large installations (especially
SHMMAX). However, they are now enough to e.g. start PostgreSQL
installations with ~~300 users and nearly 512 MB of shared buffers.
Reviewed by: A short discussion on hackers@
Modified:
head/sys/kern/sysv_sem.c
head/sys/kern/sysv_shm.c
Modified: head/sys/kern/sysv_sem.c
==============================================================================
--- head/sys/kern/sysv_sem.c Fri Jun 11 08:13:26 2010 (r209036)
+++ head/sys/kern/sysv_sem.c Fri Jun 11 09:27:33 2010 (r209037)
@@ -133,16 +133,16 @@ struct sem_undo {
* Configuration parameters
*/
#ifndef SEMMNI
-#define SEMMNI 10 /* # of semaphore identifiers */
+#define SEMMNI 50 /* # of semaphore identifiers */
#endif
#ifndef SEMMNS
-#define SEMMNS 60 /* # of semaphores in system */
+#define SEMMNS 340 /* # of semaphores in system */
#endif
#ifndef SEMUME
-#define SEMUME 10 /* max # of undo entries per process */
+#define SEMUME 50 /* max # of undo entries per process */
#endif
#ifndef SEMMNU
-#define SEMMNU 30 /* # of undo structures in system */
+#define SEMMNU 150 /* # of undo structures in system */
#endif
/* shouldn't need tuning */
Modified: head/sys/kern/sysv_shm.c
==============================================================================
--- head/sys/kern/sysv_shm.c Fri Jun 11 08:13:26 2010 (r209036)
+++ head/sys/kern/sysv_shm.c Fri Jun 11 09:27:33 2010 (r209037)
@@ -133,7 +133,7 @@ static int sysctl_shmsegs(SYSCTL_HANDLER
* Tuneable values.
*/
#ifndef SHMMAXPGS
-#define SHMMAXPGS 8192 /* Note: sysv shared memory is swap
backed. */
+#define SHMMAXPGS 131072 /* Note: sysv shared memory is swap
backed. */
#endif
#ifndef SHMMAX
#define SHMMAX (SHMMAXPGS*PAGE_SIZE)
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