Re: [MacPerl] MacPERL Performace vs. Intel Class systems

[Tim Rand <tim@stlouis.datapage.com>]

At 10:04 AM -0500 6/4/97, Randy Bradley wrote:
 >>You all have correctly identified file system performance as the bottleneck.
 >>
 >
 >  I guess all of you cannot be wrong.  However, I'm not so easy to
 >convince.    I do think that the file system on Mac is geared toward
 >binary/block IO and can suffer greatly doing text IO, depending on the
 >compiler/intrepreter.  I have not looked at the source of MacPERL an I know
 >many of you are intimate with the source.  If you say it cannot go faster,
 >I'm sure that is the case ;-)
 >
 >  However, consider the following code:

Good, you did what I had wanted to do, but don't have a C compiler.  This PERL script that I posted was originally written from a C program that was almost identical to the one you posted.

SO... the File System isn't the bottleneck.  Next, it could be the checking for COMMAND-PERIOD, or calls to the system routine that allows multi-tasking.  These can and do take a lot of additional cycles.  Perhaps they could be called less frequently.  How often are they called now?  Every statement?  Perhaps calling them once per second would be sufficient.

Also I noticed that $| is defaulted to ON (1) on my 68K machine.  I tried turning it to 0 with no change in performance.  Could it be that this is hard-coded in MacPERL?  I doubt it.



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