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From: lm@slovax.engr.sgi.com (Larry McVoy)
Newsgroups: comp.arch,comp.benchmarks,comp.unix.bsd,
comp.os.386bsd.announce,comp.os.linux.announce
Subject: Announce: lmbench1.0 benchmarksuite released
Date: 1 Dec 1994 19:38:58 +0200
Organization: Silicon Graphics Inc., Mountain View, CA
Sender: wirzeniu@cc.Helsinki.FI
Approved: linux-announce@tc.cornell.edu (Lars Wirzenius)
Message-ID: <3bl1ni$amu@kruuna.Helsinki.FI>
Keywords: benchakring, lmbench, latency, bandwidth

Hi benchmarkers,
	I have written a series of microbenchmarks that measure various
parts of your system.  The general classes are latency and bandwidth,
and the things measured include processes, networking, disk, file
system, memory, and processor.  The memory latency measurment is pretty
nice, if I do say so myself :-), because it shows both size and
latencies of onboard and external caches, as well as main memory
latencies with and without TLB misses.  Kind of a handy way to measure
your motherboard.

	The benchmarks are measuring OS stuff, mostly, but are quite
portable: I've run them on Linux, NetBSD, AIX, OSF/1, SunOS, Solaris,
HP-UX, and IRIX.

	I've include example ascii output (you can also get graphs) for
some preliminary results.  I'd like if you picked up the benchmarks and
ran them on your system and sent me the results if you think they are
better than the ones I have, or if I don't have results from your
machine/os.  Please read the COPYING files before posting results.

	I am interested in feedback as to the usefulness, correctness,
and completeness of the benchmark suite.  If your pet performance peeve
is not measured here, let me know.

	I posted the sources in comp.benchmarks (they are in 9 parts),
and you may also get the current sources and results by sending a
message as follows:

	$ Mail archives@slovax.engr.sgi.com 
	Subject: lmbench1.0*
	^D

Other subject lines that you may use are

	help 		get help
	lmbench.ctx	context switching graphs
	lmbench.bg	bargraphs of various tests
	lmbench.mem	graphs of memory latencies

Example results:


                    L M B E N C H  1 . 0   S U M M A R Y
                    ------------------------------------

            Processor, Processes - times in microseconds
            --------------------------------------------
Host                 OS  Mhz    Null    Null  Simple /bin/sh Mmap 2-proc 8-proc
                             Syscall Process Process Process  lat  ctxsw  ctxsw
--------- ------------- ---- ------- ------- ------- ------- ---- ------ ------
rs6000            AIX 2   62      23    2.0K    7.3K     23K 3817     20     32
seahorse  HP-UX A.09.03   99      14    3.6K   10.1K     18K  116     25     29
snake     HP-UX A.09.01   66      21    2.6K    5.7K     17K  156     47     55
IP22           IRIX 5.3  198      11    3.1K    8.0K     19K  260     40     38
pentium    Linux 1.1.54   91       3    3.3K   15.4K     49K   33     66     94
alpha         OSF1 V2.1  182      13    4.8K   16.1K     43K  172     25     42
ss20.50       SunOS 5.4   50       9   10.7K   57.5K    113K  130     54     85
ss20.61       SunOS 5.4   61       7    8.0K   45.8K     87K  104     37     52

            *Local* Communication latencies in microseconds
            -----------------------------------------------
Host                 OS  Pipe       UDP    RPC/     TCP    RPC/
                                            UDP             TCP
--------- ------------- ------- ------- ------- ------- -------
rs6000            AIX 2     143     385     820     498    1054
seahorse  HP-UX A.09.03     193     244     832     262     812
snake     HP-UX A.09.01     296     403    1195     367    1142
IP22           IRIX 5.3     131     313     671     278     641
pentium    Linux 1.1.54     157     658    1030    1164    1591
alpha         OSF1 V2.1     185     404     718     428     851
ss20.50       SunOS 5.4     194     590     935     560    1196
ss20.61       SunOS 5.4     150     414     622     335     784

            *Local* Communication bandwidths in megabytes/second
            ----------------------------------------------------
Host                 OS Pipe  TCP  File   Mmap  Bcopy  Bcopy  Mem   Mem
                                  reread reread (libc) (hand) read write
--------- ------------- ---- ---- ------ ------ ------ ------ ---- -----
rs6000            AIX 2   34  6.0   76.1   63.0     81    120   99   169
seahorse  HP-UX A.09.03   38 35.2   44.7   32.1     25     31   49    52
snake     HP-UX A.09.01   19 17.8   34.4   22.3     22     24   45    39
IP22           IRIX 5.3   34 22.1   32.3   43.7     32     31   69    66
pentium    Linux 1.1.54   13  2.4    9.8    4.7     18     18   48    32
alpha         OSF1 V2.1   32 12.1   39.4   22.7     39     41   76    78
ss20.50       SunOS 5.4   11 11.0   22.9   30.0     26     31   80    62
ss20.61       SunOS 5.4   24 19.5   31.0   30.7     23     24   59    40

	    Memory latencies in nanoseconds
            (WARNING - may not be correct, check graphs)
            --------------------------------------------
Host                 OS   Mhz  L1 $   L2 $    Main mem    TLB    Guesses
--------- -------------   ---  ----   ----    --------    ---    -------
rs6000            AIX 2    61    15    229         247    776    No L2 cache?
seahorse  HP-UX A.09.03    98    10     10         393    481    No L1 cache?
snake     HP-UX A.09.01    65    15     15         378   1051    No L1 cache?
IP22           IRIX 5.3   197    10     76        1018   1129
pentium    Linux 1.1.54    90    11    294         439   1254
alpha         OSF1 V2.1   182    10     56         321    452
ss20.50       SunOS 5.4    49    20    284         291    575    No L2 cache?
ss20.61       SunOS 5.4    60    16    115         816    961

--
---
Larry McVoy			(415) 390-1804			 lm@sgi.com

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