[BENCHMARK] no much change in performance of 2.5.52 as tested on LM bench

Aniruddha M Marathe (aniruddha.marathe@wipro.com)
Mon, 16 Dec 2002 12:38:59 +0530

Hi,
Here is a brief summary of results of LM bench on kernel 2.5.52

2.5.52 2.5.51
==============================================================================
Processor, Processes - times in microseconds - smaller is better

1.single handle 5.22 5.08
2. increase in time for fork proc 362 403
------------------------------------------------------------------------------
Context switching - times in microseconds - smaller is better

1. 2p/16K ctxsw 4.84 5.01
------------------------------------------------------------------------------
*Local* Communication latencies in microseconds - smaller is better
1. pipe 8.005 8.26
------------------------------------------------------------------------------
File & VM system latencies in microseconds - smaller is better
1. 10K file delete 57 59
2. mmap latency 615 651
------------------------------------------------------------------------------
*Local* Communication bandwidths in MB/s - bigger is better
1. pipe 404 335
==============================================================================

Rest of the results are not much different.

L M B E N C H 2 . 0 S U M M A R Y
------------------------------------
(Alpha software, do not distribute)

Basic system parameters
----------------------------------------------------
Host OS Description Mhz

--------- ------------- ----------------------- ----
benchtest Linux 2.5.52 i686-pc-linux-gnu 790
benchtest Linux 2.5.52 i686-pc-linux-gnu 790
benchtest Linux 2.5.52 i686-pc-linux-gnu 790
benchtest Linux 2.5.52 i686-pc-linux-gnu 790
benchtest Linux 2.5.52 i686-pc-linux-gnu 790

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
--------- ------------- ---- ---- ---- ---- ---- ----- ---- ---- ---- ---- ----
benchtest Linux 2.5.52 790 0.46 0.83 27 28 37 1.30 5.22 363 1582 7961
benchtest Linux 2.5.52 790 0.46 0.83 27 28 32 1.28 5.23 389 1575 7967
benchtest Linux 2.5.52 790 0.44 0.80 27 28 34 1.30 5.21 353 1579 8109
benchtest Linux 2.5.52 790 0.46 0.83 27 28 36 1.30 5.21 349 1581 7979
benchtest Linux 2.5.52 790 0.46 0.83 27 28 37 1.30 5.23 403 1563 8033

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
--------- ------------- ----- ------ ------ ------ ------ ------- -------
benchtest Linux 2.5.52 1.170 4.7900 14 7.2100 175 40 178
benchtest Linux 2.5.52 1.170 4.8300 14 6.4700 179 39 179
benchtest Linux 2.5.52 1.190 4.8500 14 5.5800 177 41 178
benchtest Linux 2.5.52 1.260 4.8800 14 5.5200 182 41 180
benchtest Linux 2.5.52 1.230 4.9400 14 8.0500 181 39 179

*Local* Communication latencies in microseconds - smaller is better
-------------------------------------------------------------------
Host OS 2p/0K Pipe AF UDP RPC/ TCP RPC/ TCP
ctxsw UNIX UDP TCP conn
--------- ------------- ----- ----- ---- ----- ----- ----- ----- ----
benchtest Linux 2.5.52 1.170 8.075 21 34 59 125 153 161
benchtest Linux 2.5.52 1.170 8.005 21 34 59 123 154 159
benchtest Linux 2.5.52 1.190 7.952 21 34 59 123 156 161
benchtest Linux 2.5.52 1.260 8.093 21 35 59 123 133 159
benchtest Linux 2.5.52 1.230 8.068 21 34 59 124 154 159

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
--------- ------------- ------ ------ ------ ------ ------- ----- -----
benchtest Linux 2.5.52 122 57 382 121 614 0.955 4.00000
benchtest Linux 2.5.52 121 57 398 127 615 0.950 4.00000
benchtest Linux 2.5.52 119 57 376 124 610 0.969 4.00000
benchtest Linux 2.5.52 119 57 399 128 615 0.952 4.00000
benchtest Linux 2.5.52 122 57 395 128 612 0.920 4.00000

*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
--------- ------------- ---- ---- ---- ------ ------ ------ ------ ---- -----
benchtest Linux 2.5.52 404 137 23 297 356 124 114 355 171
benchtest Linux 2.5.52 342 137 23 296 355 124 113 354 170
benchtest Linux 2.5.52 453 135 22 292 353 123 112 353 170
benchtest Linux 2.5.52 453 137 23 296 353 123 113 352 169
benchtest Linux 2.5.52 395 129 23 293 352 123 112 351 169

Memory latencies in nanoseconds - smaller is better
(WARNING - may not be correct, check graphs)
---------------------------------------------------
Host OS Mhz L1 $ L2 $ Main mem Guesses
--------- ------------- ---- ----- ------ -------- -------
benchtest Linux 2.5.52 790 3.799 65 175
benchtest Linux 2.5.52 790 3.797 8.8730 175
benchtest Linux 2.5.52 790 3.801 8.8820 176
benchtest Linux 2.5.52 790 3.799 8.8760 176
benchtest Linux 2.5.52 790 3.798 8.9510 177

Regards,
Aniruddha Marathe
WIPRO technologies, India
Aniruddha.marathe@wipro.com
+91-80-5502001 extn 5092
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