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| author | Bruce Momjian <bruce@momjian.us> | 2002-04-13 19:52:51 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2002-04-13 19:52:51 +0000 |
| commit | b73859db8c94ca061a31aae2fae21a12c87c085d (patch) | |
| tree | ff8a78537a706b05f892087cfa42108b52949981 | |
| parent | 291c875f239cd6a5238955eaef234d476103c8da (diff) | |
| download | postgresql-b73859db8c94ca061a31aae2fae21a12c87c085d.tar.gz postgresql-b73859db8c94ca061a31aae2fae21a12c87c085d.zip | |
Patch against 7.2.1 sources. Uses Solaris Intimate Shared Memory
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
| -rw-r--r-- | src/backend/storage/ipc/ipc.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/src/backend/storage/ipc/ipc.c b/src/backend/storage/ipc/ipc.c index ad351542347..10d3d6e7edb 100644 --- a/src/backend/storage/ipc/ipc.c +++ b/src/backend/storage/ipc/ipc.c @@ -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; |