Re: LMbench results for 2.5.40

Patrick Mau
2002-10-02T17:38:36Z

Hallo Jeff,

sorry for the late reply, I had to work all day. Below are five
sequencial runs of lmbench with 2.4.18 and 2.5.40. Kernel 2.5 was
compiled without CONFIG_PREEMPT.

I only rebooted between kernels, not between each run.
All numbers were obtained in single-user mode.

Patrick

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

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

--------- ------------- ----------------------- ----
tony Linux 2.4.18 i686-pc-linux-gnu 2400
tony Linux 2.4.18 i686-pc-linux-gnu 2400
tony Linux 2.4.18 i686-pc-linux-gnu 2400
tony Linux 2.4.18 i686-pc-linux-gnu 2400
tony Linux 2.4.18 i686-pc-linux-gnu 2400
tony Linux 2.5.40 i686-pc-linux-gnu 2400
tony Linux 2.5.40 i686-pc-linux-gnu 2400
tony Linux 2.5.40 i686-pc-linux-gnu 2400
tony Linux 2.5.40 i686-pc-linux-gnu 2400
tony Linux 2.5.40 i686-pc-linux-gnu 2400

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
--------- ------------- ---- ---- ---- ---- ---- ----- ---- ---- ---- ---- ----
tony Linux 2.4.18 2400 0.67 0.75 1.42 2.30 6.645 1.11 2.70 95.6 452. 6155
tony Linux 2.4.18 2400 0.67 0.75 1.45 2.29 6.736 1.11 2.70 93.1 449. 6263
tony Linux 2.4.18 2400 0.67 0.75 1.45 2.26 6.637 1.11 2.68 94.4 455. 6185
tony Linux 2.4.18 2400 0.67 0.75 1.42 2.27 6.644 1.11 2.70 94.3 451. 6201
tony Linux 2.4.18 2400 0.67 0.75 1.43 2.31 10.6 1.11 2.70 93.6 453. 6172
tony Linux 2.5.40 2400 0.66 0.75 1.54 2.36 6.521 1.13 2.83 116. 500. 6700
tony Linux 2.5.40 2400 0.66 0.75 1.52 2.40 6.550 1.12 2.83 115. 505. 6759
tony Linux 2.5.40 2400 0.66 0.75 1.51 2.38 9.482 1.12 2.84 114. 508. 6549
tony Linux 2.5.40 2400 0.66 0.75 1.51 2.42 6.608 1.12 2.85 117. 511. 6650
tony Linux 2.5.40 2400 0.66 0.75 1.51 2.38 6.524 1.12 2.83 115. 517. 6775

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
--------- ------------- ----- ------ ------ ------ ------ ------- -------
tony Linux 2.4.18 0.850 1.7300 4.0600 1.8700 21.4 4.57000 29.7
tony Linux 2.4.18 0.800 1.7200 3.9100 1.9500 23.8 4.27000 29.7
tony Linux 2.4.18 0.860 1.6800 3.8900 1.9800 22.4 3.79000 29.7
tony Linux 2.4.18 0.830 1.7000 3.7500 2.7800 19.6 4.37000 29.6
tony Linux 2.4.18 0.730 1.6700 4.0600 1.9500 22.0 3.84000 29.8
tony Linux 2.5.40 1.090 1.9000 4.4700 2.3100 23.7 5.52000 30.6
tony Linux 2.5.40 1.140 1.9000 4.4200 2.3100 22.3 4.01000 30.6
tony Linux 2.5.40 1.100 1.8900 4.4700 2.1100 22.4 4.32000 30.6
tony Linux 2.5.40 1.110 1.9300 4.4700 2.0500 23.5 3.87000 30.5
tony Linux 2.5.40 1.130 1.9100 4.4400 2.1100 24.3 4.44000 30.6

*Local* Communication latencies in microseconds - smaller is better
-------------------------------------------------------------------
Host OS 2p/0K Pipe AF UDP RPC/ TCP RPC/ TCP
ctxsw UNIX UDP TCP conn
--------- ------------- ----- ----- ---- ----- ----- ----- ----- ----
tony Linux 2.4.18 0.850 4.991 7.30 12.8 23.1 14.4 28.0 45.2
tony Linux 2.4.18 0.800 4.897 7.15 12.9 23.7 14.3 29.0 43.9
tony Linux 2.4.18 0.860 4.893 7.21 12.8 23.0 14.7 28.4 599K
tony Linux 2.4.18 0.830 4.901 7.20 12.9 23.2 14.4 28.1 44.4
tony Linux 2.4.18 0.730 4.909 7.20 13.0 22.7 14.4 28.1 44.6
tony Linux 2.5.40 1.090 5.235 7.92 13.7 23.6 15.2 29.3 48.3
tony Linux 2.5.40 1.140 5.416 7.99 13.6 24.1 15.2 29.1 48.5
tony Linux 2.5.40 1.100 5.200 7.89 13.6 23.7 15.4 29.2 49.0
tony Linux 2.5.40 1.110 5.280 7.91 13.5 23.8 15.2 29.2 48.5
tony Linux 2.5.40 1.130 5.462 7.89 13.6 23.7 15.3 29.0 48.3

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
--------- ------------- ------ ------ ------ ------ ------- ----- -----
tony Linux 2.4.18 29.2 5.6820 56.7 10.5 1196.0 1.324 2.00000
tony Linux 2.4.18 29.3 5.7120 56.7 10.6 1187.0 1.318 2.00000
tony Linux 2.4.18 29.2 5.7000 56.7 10.5 1187.0 1.352 2.00000
tony Linux 2.4.18 29.2 5.6280 55.5 10.4 1187.0 1.331 2.00000
tony Linux 2.4.18 29.2 5.6610 57.1 10.6 1186.0 1.309 2.00000
tony Linux 2.5.40 32.1 6.5480 62.0 14.5 1442.0 1.338 2.00000
tony Linux 2.5.40 32.1 6.5980 61.0 14.6 1445.0 1.341 2.00000
tony Linux 2.5.40 32.1 6.5130 59.8 14.4 1451.0 1.343 2.00000
tony Linux 2.5.40 32.3 6.5550 60.5 14.4 1450.0 1.307 2.00000
tony Linux 2.5.40 32.2 6.5800 60.1 14.5 1451.0 1.411 2.00000

*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
--------- ------------- ---- ---- ---- ------ ------ ------ ------ ---- -----
tony Linux 2.4.18 1568 2343 648. 1964.5 2007.7 840.3 907.7 2007 1078.
tony Linux 2.4.18 1451 2326 577. 1926.7 2008.0 845.9 892.6 2004 1144.
tony Linux 2.4.18 1575 2303 1301 1967.6 2007.8 851.6 901.4 2007 1189.
tony Linux 2.4.18 1569 2335 1281 1966.0 2005.3 873.9 901.4 2007 1228.
tony Linux 2.4.18 1533 2356 1118 1964.4 2007.9 887.7 913.3 2004 1272.
tony Linux 2.5.40 1266 2120 295. 1819.4 1980.0 810.3 858.5 1975 1216.
tony Linux 2.5.40 1366 2192 293. 1819.0 1980.8 831.4 884.1 1976 1288.
tony Linux 2.5.40 1388 2161 278. 1815.2 1979.3 850.5 891.4 1978 1334.
tony Linux 2.5.40 1348 2197 299. 1838.5 1979.1 842.1 904.6 1975 1360.
tony Linux 2.5.40 1367 2192 609. 1837.7 1980.8 858.5 926.8 1975 1357.

Memory latencies in nanoseconds - smaller is better
(WARNING - may not be correct, check graphs)
---------------------------------------------------
Host OS Mhz L1 $ L2 $ Main mem Guesses
--------- ------------- ---- ----- ------ -------- -------
tony Linux 2.4.18 2400 0.838 7.7160 117.8
tony Linux 2.4.18 2400 0.838 7.7160 118.1
tony Linux 2.4.18 2400 0.889 7.7140 118.2
tony Linux 2.4.18 2400 0.908 7.7250 118.0
tony Linux 2.4.18 2400 0.839 7.7140 117.8
tony Linux 2.5.40 2400 0.868 7.8170 122.5
tony Linux 2.5.40 2400 0.838 7.8160 123.8
tony Linux 2.5.40 2400 0.849 7.8190 124.0
tony Linux 2.5.40 2400 0.838 7.8170 122.6
tony Linux 2.5.40 2400 0.849 7.8220 124.0