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A few further tweaks to shared memory space estimation.

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This change brings the default size of the main shmem block back under 1MB,
which is a fairly popular value for the kernel's SHMMAX parameter.
This commit is contained in:
Tom Lane
1999-03-06 21:17:56 +00:00
parent 03842eb03b
commit 731603a92b
5 changed files with 42 additions and 27 deletions
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4
src/backend/storage/ipc/ipci.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipci.c,v 1.22 1999/02/22 06:16:49 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipci.c,v 1.23 1999/03/06 21:17:41 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -77,14 +77,12 @@ CreateSharedMemoryAndSemaphores(IPCKey key, int maxBackends)
* Size of the primary shared-memory block is estimated via
* moderately-accurate estimates for the big hogs, plus 100K for
* the stuff that's too small to bother with estimating.
* Then we add 10% for a safety margin.
*/
size = BufferShmemSize() + LockShmemSize(maxBackends);
#ifdef STABLE_MEMORY_STORAGE
size += MMShmemSize();
#endif
size += 100000;
size += size / 10;
if (DebugLvl > 1)
{