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Remove HTML FAQ files that are really just text files.

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Bruce Momjian
2000-07-07 15:41:42 +00:00
parent b29f94fd2c
commit 76adc09571
9 changed files with 786 additions and 1540 deletions
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35
doc/FAQ_BSDI
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@ -2,8 +2,9 @@ This outlines modifications to BSD/OS for running PostgreSQL:
1) How to increase resource limits
2) How to increase the number of shared memory buffers
3) How to increasing the number of semaphores
Bruce Momjian (pgman@candle.pha.pa.us) 2000-06-09
Bruce Momjian (pgman@candle.pha.pa.us) 2000-07-7
---------------------------------------------------------------------------
@ -44,3 +45,35 @@ plus add 1 for every additional 4MB of shared memory you desire.
/sys/i386/i386/i386_param.c:28:#define SYSPTSIZE 0 /* dynamically...
sysptsize can not be changed by sysctl on the fly.
---------------------------------------------------------------------------
3) How to increasing the number of semaphores.
You may need to increase the number of sysv semaphores. By default,
PostgreSQL allocates 32 semaphores, one for each backend connection.
This is just over half the default system total of 60.
The defaults are in /sys/sys/sem.h:
/* Configuration parameters */
#ifndef SEMMNI
#define SEMMNI 10 /* # of semaphore identifiers */
#endif
#ifndef SEMMNS
#define SEMMNS 60 /* # of semaphores in system */
#endif
#ifndef SEMUME
#define SEMUME 10 /* max # of undo entries per process */
#endif
#ifndef SEMMNU
#define SEMMNU 30 /* # of undo structures in system */
#endif
Set the values you want in your kernel config file, e.g.:
options "SEMMNI=40"
options "SEMMNS=240"
options "SEMUME=40"
options "SEMMNU=120"