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Hi All,
Here are the performance results of latest Linux 2.5 kernel tree using
LMBench (V2.0patch2).
There is a drop in performance for local communication from 2.5.42 kernel to
2.5.43 kernel.
Thanks,
pavan.
============================================================================
========
Test Machine details:
---------------------
processor : 0 (single processor)
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 10
cpu MHz : 868.241
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 mmx fxsr sse
bogomips : 1716.22
============================================================================
==========
L M B E N C H 2 . 0 S U M M A R Y
------------------------------------
Basic system parameters
----------------------------------------------------
Host OS Description Mhz
--------- ------------- ----------------------- ----
access1 Linux 2.5.42 i686-pc-linux-gnu 868
access1 Linux 2.5.42 i686-pc-linux-gnu 868
access1 Linux 2.5.42 i686-pc-linux-gnu 868
access1 Linux 2.5.42 i686-pc-linux-gnu 868
access1 Linux 2.5.42 i686-pc-linux-gnu 868
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
--------- ------------- ---- ---- ---- ---- ---- ----- ---- ---- ---- ---- -
--- access1 Linux 2.5.42 868 0.42 0.78 24.6 26.1 32.7 1.04 4.93 471. 1823 8041 access1 Linux 2.5.42 868 0.39 0.78 24.6 26.0 30.0 1.04 4.94 486. 1616 7276 access1 Linux 2.5.42 868 0.41 0.78 24.6 26.2 33.3 1.04 4.93 426. 1620 7298 access1 Linux 2.5.42 868 0.39 0.77 24.6 26.2 30.0 1.04 4.94 473. 1610 7284 access1 Linux 2.5.42 868 0.41 0.79 24.6 26.1 30.0 1.04 4.93 421. 1590 7267Context 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 --------- ------------- ----- ------ ------ ------ ------ ------- ------- access1 Linux 2.5.42 1.240 4.5600 13.6 6.8500 191.3 48.5 192.4 access1 Linux 2.5.42 1.360 4.7200 15.6 12.7 154.9 35.7 155.2 access1 Linux 2.5.42 1.270 4.5700 13.3 5.8700 154.5 39.4 155.2 access1 Linux 2.5.42 1.320 4.5600 13.6 6.6800 155.1 35.9 156.4 access1 Linux 2.5.42 1.270 4.5400 13.6 12.6 154.5 36.3 155.0
*Local* Communication latencies in microseconds - smaller is better ------------------------------------------------------------------- Host OS 2p/0K Pipe AF UDP RPC/ TCP RPC/ TCP ctxsw UNIX UDP TCP conn --------- ------------- ----- ----- ---- ----- ----- ----- ----- ---- access1 Linux 2.5.42 1.240 7.515 19.8 29.6 54.6 115.5 149.9 145. access1 Linux 2.5.42 1.360 7.359 19.8 29.8 54.8 116.0 150.0 144. access1 Linux 2.5.42 1.270 7.463 19.7 29.4 54.9 115.8 150.6 144. access1 Linux 2.5.42 1.320 7.437 19.7 29.3 55.1 116.3 149.2 144. access1 Linux 2.5.42 1.270 7.436 19.6 29.2 55.2 115.6 149.6 142.
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 --------- ------------- ------ ------ ------ ------ ------- ----- ----- access1 Linux 2.5.42 98.6 53.3 294.9 89.3 499.0 1.058 4.00000 access1 Linux 2.5.42 97.8 52.1 267.4 86.7 501.0 1.054 4.00000 access1 Linux 2.5.42 97.8 52.2 268.7 86.7 498.0 1.061 4.00000 access1 Linux 2.5.42 97.6 52.1 268.5 86.7 511.0 1.050 3.00000 access1 Linux 2.5.42 97.7 52.0 267.8 86.5 494.0 1.075 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 --------- ------------- ---- ---- ---- ------ ------ ------ ------ ---- ---- access1 Linux 2.5.42 348. 143. 33.8 298.6 338.5 108.2 100.4 339. 134.6 access1 Linux 2.5.42 439. 138. 19.2 349.6 408.9 131.8 125.2 406. 168.1 access1 Linux 2.5.42 395. 144. 19.0 354.9 408.1 131.2 126.3 409. 168.2 access1 Linux 2.5.42 275. 146. 38.6 353.0 400.1 131.1 123.1 407. 168.0 access1 Linux 2.5.42 456. 144. 19.1 350.6 409.4 130.9 127.7 397. 167.9
Memory latencies in nanoseconds - smaller is better (WARNING - may not be correct, check graphs) --------------------------------------------------- Host OS Mhz L1 $ L2 $ Main mem Guesses --------- ------------- ---- ----- ------ -------- ------- access1 Linux 2.5.42 868 3.491 8.2680 183.6 access1 Linux 2.5.42 868 3.494 8.1840 155.6 access1 Linux 2.5.42 868 3.489 9.5630 155.8 access1 Linux 2.5.42 868 3.491 8.1670 155.5 access1 Linux 2.5.42 868 3.490 8.1590 155.8
============================================================================ ========
L M B E N C H 2 . 0 S U M M A R Y ------------------------------------
Basic system parameters ---------------------------------------------------- Host OS Description Mhz
--------- ------------- ----------------------- ---- access1 Linux 2.5.43 i686-pc-linux-gnu 868 access1 Linux 2.5.43 i686-pc-linux-gnu 868 access1 Linux 2.5.43 i686-pc-linux-gnu 868 access1 Linux 2.5.43 i686-pc-linux-gnu 868 access1 Linux 2.5.43 i686-pc-linux-gnu 868
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 --------- ------------- ---- ---- ---- ---- ---- ----- ---- ---- ---- ---- ---- access1 Linux 2.5.43 868 0.41 0.79 24.8 26.3 1.04 4.73 459. 1786 8022 access1 Linux 2.5.43 868 0.40 0.79 24.5 26.3 1.04 4.73 457. 1775 7934 access1 Linux 2.5.43 868 0.41 0.80 24.7 26.3 35.8 1.02 4.72 466. 1778 8045 access1 Linux 2.5.43 868 0.41 0.80 24.6 26.4 33.7 1.06 4.75 490. 1751 7965 access1 Linux 2.5.43 868 0.41 0.78 24.6 26.4 31.7 1.02 4.73 418. 1769 7949
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 --------- ------------- ----- ------ ------ ------ ------ ------- ------- access1 Linux 2.5.43 1.430 4.6700 13.6 7.0500 187.0 42.0 184.1 access1 Linux 2.5.43 1.330 4.7600 13.7 10.6 182.8 44.4 184.2 access1 Linux 2.5.43 1.320 4.8400 13.6 10.9 186.5 45.6 186.1 access1 Linux 2.5.43 1.410 4.7100 13.8 6.6600 182.5 42.9 184.4 access1 Linux 2.5.43 1.280 4.6300 13.4 6.1300 195.7 50.6 192.1
*Local* Communication latencies in microseconds - smaller is better ------------------------------------------------------------------- Host OS 2p/0K Pipe AF UDP RPC/ TCP RPC/ TCP ctxsw UNIX UDP TCP conn --------- ------------- ----- ----- ---- ----- ----- ----- ----- ---- access1 Linux 2.5.43 1.430 7.980 21.6 30.5 54.8 117.7 151.3 141. access1 Linux 2.5.43 1.330 7.381 20.8 29.8 54.7 116.6 150.9 141. access1 Linux 2.5.43 1.320 8.595 21.0 30.6 55.5 117.6 154.9 142. access1 Linux 2.5.43 1.410 7.603 23.6 30.2 55.0 119.4 150.3 143. access1 Linux 2.5.43 1.280 7.409 21.7 29.9 54.9 120.1 150.0 141.
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 --------- ------------- ------ ------ ------ ------ ------- ----- ----- access1 Linux 2.5.43 97.8 52.4 283.2 87.5 517.0 1.140 4.00000 access1 Linux 2.5.43 98.0 52.7 284.9 87.7 507.0 1.392 4.00000 access1 Linux 2.5.43 99.1 52.7 287.7 87.5 509.0 1.013 4.00000 access1 Linux 2.5.43 98.1 52.6 285.3 87.9 520.0 1.097 4.00000 access1 Linux 2.5.43 97.9 52.5 283.5 87.8 513.0 1.139 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 --------- ------------- ---- ---- ---- ------ ------ ------ ------ ---- ---- - access1 Linux 2.5.43 388. 140. 17.0 296.3 351.3 108.8 104.7 346. 138.5 access1 Linux 2.5.43 322. 144. 17.1 309.9 349.6 110.7 99.5 351. 141.7 access1 Linux 2.5.43 270. 142. 17.2 309.8 350.5 106.6 100.2 351. 137.8 access1 Linux 2.5.43 312. 134. 17.4 306.6 351.4 112.2 100.5 352. 138.4 access1 Linux 2.5.43 444. 141. 17.4 309.4 351.6 113.5 104.9 352. 138.6
Memory latencies in nanoseconds - smaller is better (WARNING - may not be correct, check graphs) --------------------------------------------------- Host OS Mhz L1 $ L2 $ Main mem Guesses --------- ------------- ---- ----- ------ -------- ------- access1 Linux 2.5.43 868 3.489 8.1600 178.3 access1 Linux 2.5.43 868 3.490 8.1540 177.5 access1 Linux 2.5.43 868 3.491 8.2640 176.3 access1 Linux 2.5.43 868 3.490 8.1970 177.1 access1 Linux 2.5.43 868 3.492 59.8 176.8
============================================ PAVAN KUMAR REDDY N.S. Sr.Software Engineer Wipro Technologies 53/1, Hosur road, Madivala Bangalore - 68. Phone Off: +91-80-5502001-8 extn: 6087. Res: +91-80-6685179 http://www.wipro.com/linux/ ============================================
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