Weekly Edition
Return to the Kernel page
| |||||||||||||
|
| |||||||||||||
Latest kernel LMBench performance results.(with HZ=1000)
Hi All,
Here is the summary of the LMBench performance test result of different
Linux kernels.
There is not much difference between kernels except there is
a little increase in file system and memory latency
between 2.5.45 and 2.5.46 kernels.
-pavan
========================================================================
=
L M B E N C H 2 . 0 [PATCH 3] S U M M A R Y
------------------------------------------------------------
Hardware Specifications:
--------------------------------------
# CPU's : 1 - Intel PIII
Motherboard : Intel 810
CPU Freq : 859 MHz
RAM : 128MB
L1 I Cache : 16K
L1 D Cache : 16K
L2 Cache : 256K
File System : ext3
glibc ver. : 2.2.5-34
eth0 : RTL8139
HZ (linux/include/asm-i386/param.h) : 1000
Processor, Processes - times in microseconds - smaller is better
------------------------------------------------------------------
OS null null open selct sig sig fork exec sh
call I/O stat close TCP inst hndl proc proc proc
------------------------------------------------------------------
Lx2.4.19 0.39 0.68 3.98 5.33 28.8 0.95 3.07 147. 792. 5351
Lx2.4.20rc1 0.39 0.69 3.79 4.97 32.3 0.94 3.07 149. 762. 5299
Lx2.5.43 0.39 0.77 24.6 26.1 30.0 1.02 4.71 437. 1575 7817
Lx2.5.44 0.39 0.75 24.6 26.2 30.0 1.02 4.84 364. 1562 7661
Lx2.5.45 0.39 0.80 24.9 26.3 34.9 1.17 6.00 380. 1492 7551
Lx2.5.46 0.39 0.76 24.6 26.5 33.7 1.18 5.95 379. 1574 7759
------------------------------------------------------------------
Context switching - times in microseconds - smaller is better
--------------------------------------------------------------------
OS 2p/0K 2p/16K 2p/64K 8p/16K 8p/64K 16p/16K 16p/64K
ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw
--------------------------------------------------------------------
Lx2.4.19 1.120 4.4900 13.4 9.6600 186.6 42.5 188.7
Lx2.4.20rc1 1.140 4.4700 13.3 8.4400 188.0 45.1 187.6
Lx 2.5.43 1.210 4.5300 13.2 7.9600 187.2 44.4 189.7
Lx 2.5.44 1.070 4.4100 13.1 7.8600 187.1 43.4 189.8
Lx 2.5.45 1.260 4.5800 13.2 7.7400 189.0 43.3 190.2
Lx 2.5.46 1.240 4.5600 13.2 7.7500 187.7 44.7 189.3
--------------------------------------------------------------------
*Local* Communication latencies in microseconds - smaller is better
--------------------------------------------------------------------
OS 2p/0K Pipe AF UDP RPC/ TCP RPC/ TCP
ctxsw UNIX UDP TCP conn
--------------------------------------------------------------------
Lx2.4.19 1.120 6.371 11.4 17.9 38.3 24.5 50.7 84.5
Lx2.4.20rc1 1.140 6.348 11.6 18.3 38.8 25.8 51.7 86.4
Lx2.5.43 1.140 6.936 21.6 30.1 53.7 113.7 145.4 142.
Lx2.5.44 1.170 7.010 19.1 29.8 55.5 113.5 146.1 143.
Lx2.5.45 1.190 7.537 17.9 30.2 53.6 73.3 101.2 149.
Lx2.5.46 1.240 6.858 19.3 31.5 54.4 113.4 141.8 148.
---------------------------------------------------------------------
File & VM system latencies in microseconds - smaller is better
------------------------------------------------------------------
OS 0K File 10K File Mmap Prot Page
Create Delete Create Delete Latency Fault Fault
------------------------------------------------------------------
Lx2.4.19 71.7 23.6 238.3 48.9 293.0 0.771 2.00000
Lx2.4.20rc1 72.3 24.8 243.2 49.4 287.0 0.758 2.00000
Lx2.5.43 97.7 52.9 294.8 88.6 510.0 0.971 3.00000
Lx2.5.44 98.2 53.2 298.2 88.4 505.0 0.927 3.00000
Lx2.5.45 105.8 54.4 308.3 92.4 508.0 0.957 3.00000
Lx2.5.46 102.4 56.4 303.9 95.5 563.0 1.020 3.00000
------------------------------------------------------------------
*Local* Communication bandwidths in MB/s - bigger is better
-----------------------------------------------------------------
OS Pipe AF TCP File Mmap Bcopy Bcopy Mem Mem
UNIX reread reread (libc)(hand)read write
-----------------------------------------------------------------
Lx2.4.19 719. 337. 150. 310.3 344.8 110.4 102.2 345. 139.7
Lx2.4.20rc1 721. 409. 150. 311.1 345.4 110.6 101.6 344. 139.9
Lx2.5.43 387. 147. 17.7 304.9 344.5 110.6 102.8 345. 139.5
Lx2.5.44 402. 150. 17.1 307.1 344.4 110.6 102.7 344. 139.7
Lx2.5.45 383. 250. 22.0 305.2 344.8 111.2 102.5 344. 139.6
Lx2.5.46 359. 147. 21.2 304.4 344.0 110.9 102.1 343. 139.5
-----------------------------------------------------------------
Memory latencies in nanoseconds - smaller is better
(WARNING - may not be correct, check graphs)
-----------------------------------------------------------------
OS Mhz L1 $ L2 $ Main mem Guesses
-----------------------------------------------------------------
Linux 2.4.19 859 3.490 8.1530 180.9
Linux 2.4.20rc1 859 3.490 8.1530 180.6
Linux 2.5.43 859 3.490 8.1540 180.8
Linux 2.5.44 859 3.491 8.1540 181.0
Linux 2.5.45 859 3.490 8.1540 179.6
Linux 2.5.46 859 3.491 8.1570 181.3
-----------------------------------------------------------------
Note: All results are average of five iterations.
==================================================================
============================================
PAVAN KUMAR REDDY N.S.
Sr.Software Engineer
Wipro Technologies
53/1, Hosur road, Madivala
Bangalore - 68.
pavan.kumar@wipro.com
Phone Off: +91-80-5502001-8 extn: 5086.
Res: +91-80-6685179
http://www.wipro.com/linux/
============================================
**************************Disclaimer**************************************************
Information contained in this E-MAIL being proprietary to Wipro Limited is 'privileged'
and 'confidential' and intended for use only by the individual or entity to which it is
addressed. You are notified that any use, copying or dissemination of the information
contained in the E-MAIL in any manner whatsoever is strictly prohibited.
****************************************************************************************
|
|
||||||||||||