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Patch against 7.2.1 sources. Uses Solaris Intimate Shared Memory

Browse Source 
for Solaris on SPARC.  Scott Brunza (sbrunza@sonalysts.com) gets
credit for identifying the issue, making the change, and doing
the regression tests.

Earlier testing on 7.2rc2 and 7.2 showed performance gains of
1% to 10% on pgbench, osdb-pg, and some locally developed apps.

Solaris Intimate Shared Memory is described in "SOLARIS INTERNALS
Core Kernel Components" by Jim Mauro and Richard McDougall,
Copyright 2001 Sun Microsystem, Inc.  ISBN 0-13-022496-0

P.J. "Josh" Rovero
This commit is contained in:
Bruce Momjian 2002-04-13 19:52:51 +00:00
parent 291c875f23
commit b73859db8c
1 changed files with 15 additions and 3 deletions
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18
src/backend/storage/ipc/ipc.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipc.c,v 1.77 2002/03/06 06:10:05 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipc.c,v 1.78 2002/04/13 19:52:51 momjian Exp $
*
* NOTES
*
@ -632,7 +632,12 @@ InternalIpcMemoryCreate(IpcMemoryKey memKey, uint32 size, int permission)
on_shmem_exit(IpcMemoryDelete, Int32GetDatum(shmid));
/* OK, should be able to attach to the segment */
memAddress = shmat(shmid, 0, 0);
#if defined(solaris) && defined(__sparc__)
/* use intimate shared memory on SPARC Solaris */
memAddress = shmat(shmid, 0, SHM_SHARE_MMU);
#else
memAddress = shmat(shmid, 0, 0);
#endif
if (memAddress == (void *) -1)
{
@ -812,7 +817,14 @@ IpcMemoryCreate(uint32 size, bool makePrivate, int permission)
shmid = shmget(NextShmemSegID, sizeof(PGShmemHeader), 0);
if (shmid < 0)
continue; /* failed: must be some other app's */
memAddress = shmat(shmid, 0, 0);
#if defined(solaris) && defined(__sparc__)
/* use intimate shared memory on SPARC Solaris */
memAddress = shmat(shmid, 0, SHM_SHARE_MMU);
#else
memAddress = shmat(shmid, 0, 0);
#endif
if (memAddress == (void *) -1)
continue; /* failed: must be some other app's */
hdr = (PGShmemHeader *) memAddress;