Re: Performance of Intel 80x86 CPUs in UNIX environment (repost)

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Article #903

#903

From: Thomas Hoberg
Date: Sat, 07 Nov 1992 18:33

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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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Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!yale.edu!ira.uka.de!math.fu-berlin.de!mailgzrz.TU-Berlin.DE!ceres.fokus.gmd.de!gmdtub!bigfoot!tmh
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>
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In-reply-to: eoahmad@ntuix.ntu.ac.sg's message of 3 Nov 92 04:15:57 GMT

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