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- From: tmh@bigfoot.first.gmd.de (Thomas Hoberg)
- Newsgroups: comp.sys.intel,comp.sys.ibm.pc.hardware,comp.benchmarks
- Subject: Re: Performance of Intel 80x86 CPUs in UNIX environment (repost)
- Message-ID: <TMH.92Nov7193313@bigfoot.first.gmd.de>
- Date: 7 Nov 92 18:33:13 GMT
- References: <1d3ut0INNdnc@iraul1.ira.uka.de> <1992Nov3.041557.20712@ntuix.ntu.ac.sg>
- Sender: news@bigfoot.first.gmd.de
- Followup-To: comp.sys.intel
- Organization: GMD-FIRST, Berlin
- Lines: 32
- In-reply-to: eoahmad@ntuix.ntu.ac.sg's message of 3 Nov 92 04:15:57 GMT
-
- In article <1992Nov3.041557.20712@ntuix.ntu.ac.sg> eoahmad@ntuix.ntu.ac.sg (Othman Ahmad) writes:
- SPEC benchmark is no longer a typical user program. My main load now is
- the running of X-window applications. Anyone has figures for X11 running on
- Intel Microprocessors?
-
- I only try it on our 386/25(no cache) and 486/33. The figure for
- X11perf -bigtilerect500
- is about 2 versus 4.4 per second. The speedup is only 120% which shows that
- the internal cache effect becomes negligible.
- Even then x11perf is a repetition benchmark which can make available
- cache look more impressive than it should be.
- Be very careful when using Xperf as a benchmark on an ISA based system.
- You might end up measureing ISA throughput and unsurprising there is
- little difference there. To get some useful numbers you should use the
- pixmap/pixmap values and no window/window or pixmap/window
- window/pixmap values (although they might be interesting in an other
- context). Actually I'd be very interested to see those values for
- otherwise identical systems using the various DX, DX2 processors from
- 25 to 60MHz.
- --
- Othman bin Ahmad, School of EEE,
- Nanyang Technological University, Singapore 2263.
- Internet Email: eoahmad@ntuix.ntu.ac.sg
- Bitnet Email: eoahmad@ntuvax.bitnet
- ---
- Thomas M. Hoberg | Internet: tmh@first.gmd.de
- 1000 Berlin 41 | tmh@cs.tu-berlin.de
- Wielandstr. 4 |
- Germany | BITNET: tmh@tub.bitnet
- +49-30-851-50-21 |
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