Horton

Re: Fw: Fw: bad performance on irix

igor.kovalenko@motorola.com

View thread View on postgr.es
From: Igor Kovalenko <Igor.Kovalenko@motorola.com>
To: bruc@acm.org
Cc: lamigo@atc.unican.es, tgl@sss.pgh.pa.us, pgsql-hackers@postgresql.org
Date: 2002-03-20T22:18:57Z
Lists: pgsql-hackers 
I am confused to hell. I always thought MIPS does NOT have TAS
instruction ;)

"Robert E. Bruccoleri" wrote:
> 
> 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        |                                    |
> +-----------------------------+------------------------------------+