Dear Tom,
The evidence is from the Process Activity Recorder, an Irix utility
similar to strace the reports syscall usage. A number of semop's are performed
in the operation of backend. Luis can send you specifics. --Bob
Luis Alberto Amigo Navarro writes:
>
>
> ----- Original Message -----
> From: "Tom Lane" <[EMAIL PROTECTED]>
> To: "Luis Alberto Amigo Navarro" <[EMAIL PROTECTED]>
> Cc: <[EMAIL PROTECTED]>; "Robert E. Bruccoleri"
> <[EMAIL PROTECTED]>
> Sent: Monday, March 18, 2002 5:36 PM
> Subject: Re: Fw: [HACKERS] bad performance on irix
>
>
> > "Luis Alberto Amigo Navarro" <[EMAIL PROTECTED]> forwards:
> > >> It's using the spinlocks
> > >> for some locks, but semaphores for others.
> >
> > That doesn't make any sense to me. For one thing, if HAS_TEST_AND_SET
> > is defined in the config header, the executable will just plain fail to
> > build if there's no tas implementation, because lmgr/spin.c won't be
> > compiled. And I sure don't see how some of the locks might be
> > implemented one way and some the other.
> >
> > Which ones do you think are being implemented as semaphores, and what's
> > your evidence?
> >
> > regards, tom lane
> >
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>
>
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| Robert E. Bruccoleri, Ph.D. | email: [EMAIL PROTECTED] |
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