In September 2000, below was posted to the newsgroup comp.lang.postscript with information regarding PPST.
Caveat emptor -- PPST makes Dhrystone look like a good benchmark. It has a nasty habit of ranking different configurations of the same RIP in *exact* reverse of their actual performance, and some versions of it have been known to go into infinite loops when run on fast enough RIPs. It's also easy for an ethically-challanged RIP to spot, and arrange for its time-of-day clock to suddenly slow down;-) PPST only measures how fast a RIP interprets PPST, nothing else, but it has the advantage of measuring it to an impressive number of spurious decimal places, which makes it very popular with clock-watchers, bean-counters, and jobsworths. In the PostScript world, more than almost any other area I know, it is VITALLY importmant to benchmark with real world data. And make sure you measure ``click-to-clunk'' time, too, not anything depending on a clock inside the printer. And it's not like you don't have any real jobs lying around, right? ;-)
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