home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky comp.arch:10793 comp.benchmarks:1706
- Path: sparky!uunet!auspex-gw!guy
- From: guy@Auspex.COM (Guy Harris)
- Newsgroups: comp.arch,comp.benchmarks
- Subject: Re: Lisp performance (on Sparc SS2, SS10-30, HP720)
- Message-ID: <15506@auspex-gw.auspex.com>
- Date: 16 Nov 92 18:44:51 GMT
- References: <1e824rINNlpu@iraul1.ira.uka.de>
- Sender: news@auspex-gw.auspex.com
- Followup-To: comp.arch
- Organization: Auspex Systems, Santa Clara
- Lines: 14
- Nntp-Posting-Host: auspex.auspex.com
-
- >From the SpecInt92 results, one should expect a performance increase
- >of about a factor of 2 when switching from a SS2 to either s SS10-30
- >or HP720. Unfortunately, on both machines turned out to but just
- >30% faster than a SS2 when running our system (for which ps NEVER
- >shows a resident set under 3-4 MB, not even on an 8MB machine).
-
- Just out of curiosity, does the HP machine have a write-through or a
- write-back cache? I've seen some cases where cache-buster programs
- run better on machines with a write-through cache than on machines with
- a write-back cache; your LISP interpreter+application may be such a
- program. The SS2 has a write-through cache, and the SS10 has, I think, a
- write-back data cache. (The SS10-30's caches are, when combined,
- smaller than the SS2's cache - 20K Icache + 16K Dcache, vs. 64K combined
- cache; how large is the HP's cache?)
-