Horton
Menu

Re: Fw: Fw: bad performance on irix

Robert E. Bruccoleri <bruc@stone.congenomics.com>

View thread
From: "Robert E. Bruccoleri" <bruc@stone.congenomics.com>
To: Igor.Kovalenko@motorola.com (Igor Kovalenko)
Cc: lamigo@atc.unican.es, bruc@acm.org, tgl@sss.pgh.pa.us, pgsql-hackers@postgresql.org
Date: 2002-03-20T21:52:57Z
Lists: pgsql-hackers 
Dear Igor,

Igor Kovalenko writes:

> Makes me wonder... perhaps now someone will be convinced to take a look
> at the POSIX IPC patch. On some platforms (not on Linux I am afraid)
> POSIX mutexes might be quite a bit faster than SYSV semaphores.

Yes, but on the SGI platform, the MIPS test_and_set instructions are
really fast and should be used.

+-----------------------------+------------------------------------+
| Robert E. Bruccoleri, Ph.D. | email: bruc@acm.org                |
| P.O. Box 314                | URL:   http://www.congen.com/~bruc |
| Pennington, NJ 08534        |                                    |
+-----------------------------+------------------------------------+