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LMbench2.0 results

From:  "Paolo Ciarrocchi" <ciarrocchi@linuxmail.org>
To:  linux-kernel@vger.kernel.org
Subject:  LMbench2.0 results
Date:  Sat, 07 Sep 2002 20:18:54 +0800

Hi all,
I've just ran lmbench2.0 on my laptop.
Here the results (again, 2.5.33 seems to be "slow", I don't know why...)

cd results && make summary percent 2>/dev/null | more
make[1]: Entering directory `/usr/src/LMbench/results'

                 L M B E N C H  2 . 0   S U M M A R Y
                 ------------------------------------


Basic system parameters
----------------------------------------------------
Host                 OS Description              Mhz
                                                    
--------- ------------- ----------------------- ----
frodo      Linux 2.4.18       i686-pc-linux-gnu  797
frodo      Linux 2.4.19       i686-pc-linux-gnu  797
frodo      Linux 2.5.33       i686-pc-linux-gnu  797

Processor, Processes - times in microseconds - smaller is better
----------------------------------------------------------------
Host                 OS  Mhz null null      open selct sig  sig  fork exec sh  
                             call  I/O stat clos TCP   inst hndl proc proc proc
--------- ------------- ---- ---- ---- ---- ---- ----- ---- ---- ---- ---- ----
frodo      Linux 2.4.18  797 0.40 0.56 3.18 3.97       1.00 3.18 115. 1231 13.K
frodo      Linux 2.4.19  797 0.40 0.56 3.07 3.88       1.00 3.19 129. 1113 13.K
frodo      Linux 2.5.33  797 0.40 0.61 3.78 4.76       1.02 3.37 201. 1458 13.K

Context switching - times in microseconds - smaller is better
-------------------------------------------------------------
Host                 OS 2p/0K 2p/16K 2p/64K 8p/16K 8p/64K 16p/16K 16p/64K
                        ctxsw  ctxsw  ctxsw ctxsw  ctxsw   ctxsw   ctxsw
--------- ------------- ----- ------ ------ ------ ------ ------- -------
frodo      Linux 2.4.18 0.990 4.4200   13.8 6.2700  309.8    58.6   310.5
frodo      Linux 2.4.19 0.900 4.2900   15.3 5.9100  309.6    57.7   309.9
frodo      Linux 2.5.33 1.620 5.2800   15.3 9.3500  312.7    54.9   312.7

*Local* Communication latencies in microseconds - smaller is better
-------------------------------------------------------------------
Host                 OS 2p/0K  Pipe AF     UDP  RPC/   TCP  RPC/ TCP
                        ctxsw       UNIX         UDP         TCP conn
--------- ------------- ----- ----- ---- ----- ----- ----- ----- ----
frodo      Linux 2.4.18 0.990 4.437 8.66                             
frodo      Linux 2.4.19 0.900 4.561 7.76                             
frodo      Linux 2.5.33 1.620 6.497 9.11                             

File & VM system latencies in microseconds - smaller is better
--------------------------------------------------------------
Host                 OS   0K File      10K File      Mmap    Prot    Page	
                        Create Delete Create Delete  Latency Fault   Fault 
--------- ------------- ------ ------ ------ ------  ------- -----   ----- 
frodo      Linux 2.4.18   68.9   16.0  185.8   31.6    425.0 0.789 2.00000
frodo      Linux 2.4.19   68.9   14.9  186.5   29.8    416.0 0.798 2.00000
frodo      Linux 2.5.33   77.8   19.1  211.6   38.3    774.0 0.832 3.00000

*Local* Communication bandwidths in MB/s - bigger is better
-----------------------------------------------------------
Host                OS  Pipe AF    TCP  File   Mmap  Bcopy  Bcopy  Mem   Mem
                             UNIX      reread reread (libc) (hand) read write
--------- ------------- ---- ---- ---- ------ ------ ------ ------ ---- -----
frodo      Linux 2.4.18 810. 650.       181.7  203.7  101.5  101.4 203. 195.3
frodo      Linux 2.4.19 808. 680.       187.2  203.8  101.5  101.4 203. 190.1
frodo      Linux 2.5.33 571. 636.       185.6  202.5  100.5  100.4 202. 190.3

Memory latencies in nanoseconds - smaller is better
    (WARNING - may not be correct, check graphs)
---------------------------------------------------
Host                 OS   Mhz  L1 $   L2 $    Main mem    Guesses
--------- -------------  ---- ----- ------    --------    -------
frodo      Linux 2.4.18   797 3.767 8.7890  158.9
frodo      Linux 2.4.19   797 3.767 8.7980  158.9
frodo      Linux 2.5.33   797 3.798 8.8660  160.1
make[1]: Leaving directory `/usr/src/LMbench/results'

Comments?

Let me know if you need further information (.config, info about my hardware) or if you want I run other tests.

Ciao,
           Paolo
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