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SubjectLMbench 2.4.0-test10pre-SMP vs. 2.2.18pre-SMP
Hardware:
Dual P-II 400 Mhz
128 MB RAM
13GB hard drive

First test was with 2.4.0-test10-pre3.
Next four tests were with 2.4.0-test10-pre4.
Final four tests were with 2.2.18-pre17.

All are 'virgin' kernels, without any patches.

--
Jeff Garzik | The difference between laziness and
Building 1024 | prioritization is the end result.
MandrakeSoft |
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

--------- ------------- ----------------------- ----
rum.normn Linux 2.4.0-t i686-pc-linux-gnu 401
rum.normn Linux 2.4.0-t i686-pc-linux-gnu 401
rum.normn Linux 2.4.0-t i686-pc-linux-gnu 401
rum.normn Linux 2.4.0-t i686-pc-linux-gnu 401
rum.normn Linux 2.4.0-t i686-pc-linux-gnu 401
rum.normn Linux 2.2.18p i686-pc-linux-gnu 401
rum.normn Linux 2.2.18p i686-pc-linux-gnu 401
rum.normn Linux 2.2.18p i686-pc-linux-gnu 401
rum.normn Linux 2.2.18p i686-pc-linux-gnu 401

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 inst hndl proc proc proc
--------- ------------- ---- ---- ---- ---- ---- ----- ---- ---- ---- ---- ----
rum.normn Linux 2.4.0-t 401 0.8 1.3 6.0 8.9 97 2.1 4.3 0.6K 2.0K 10.K
rum.normn Linux 2.4.0-t 401 0.8 1.4 5.8 8.3 77 2.1 4.3 0.6K 2.1K 10.K
rum.normn Linux 2.4.0-t 401 0.8 1.4 5.8 8.4 74 2.1 4.3 0.6K 2.1K 10.K
rum.normn Linux 2.4.0-t 401 0.8 1.4 5.8 8.3 71 2.1 4.3 0.6K 2.1K 10.K
rum.normn Linux 2.4.0-t 401 0.8 1.4 5.8 8.4 71 2.1 4.3 0.6K 2.0K 10.K
rum.normn Linux 2.2.18p 401 0.9 1.3 5.3 7.3 40 2.3 3.3 0.5K 1.8K 9.8K
rum.normn Linux 2.2.18p 401 0.8 1.3 5.1 7.2 40 2.2 3.3 0.5K 1.8K 9.9K
rum.normn Linux 2.2.18p 401 0.9 1.3 5.3 7.4 40 2.3 3.3 0.5K 1.8K 9.9K
rum.normn Linux 2.2.18p 401 0.8 1.3 5.1 7.1 40 2.2 3.3 0.5K 1.9K 9.9K

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
--------- ------------- ----- ------ ------ ------ ------ ------- -------
rum.normn Linux 2.4.0-t 5 21 55 23 106 27 154
rum.normn Linux 2.4.0-t 5 20 55 20 117 22 147
rum.normn Linux 2.4.0-t 5 20 72 21 116 26 148
rum.normn Linux 2.4.0-t 5 21 55 22 114 28 154
rum.normn Linux 2.4.0-t 6 21 55 21 119 31 148
rum.normn Linux 2.2.18p 2 18 56 18 106 22 158
rum.normn Linux 2.2.18p 2 18 52 18 120 26 173
rum.normn Linux 2.2.18p 1 18 54 18 110 29 173
rum.normn Linux 2.2.18p 2 18 54 18 116 24 169

*Local* Communication latencies in microseconds - smaller is better
-------------------------------------------------------------------
Host OS 2p/0K Pipe AF UDP RPC/ TCP RPC/ TCP
ctxsw UNIX UDP TCP conn
--------- ------------- ----- ----- ---- ----- ----- ----- ----- ----
rum.normn Linux 2.4.0-t 5 20 42 61 106 80 160 149
rum.normn Linux 2.4.0-t 5 23 43 63 105 82 156 146
rum.normn Linux 2.4.0-t 5 23 43 63 105 82 159 147
rum.normn Linux 2.4.0-t 5 24 44 64 104 81 156 147
rum.normn Linux 2.4.0-t 6 20 45 63 106 81 157 146
rum.normn Linux 2.2.18p 2 12 18 56 123 106 159 237
rum.normn Linux 2.2.18p 2 12 20 64 123 107 159 240
rum.normn Linux 2.2.18p 1 12 21 54 123 107 160 237
rum.normn Linux 2.2.18p 2 12 21 52 124 108 159 236

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
--------- ------------- ------ ------ ------ ------ ------- ----- -----
rum.normn Linux 2.4.0-t 15 1 28 3 954 1 0.0K
rum.normn Linux 2.4.0-t 15 1 28 3 1001 1 0.0K
rum.normn Linux 2.4.0-t 15 1 28 3 1022 1 0.0K
rum.normn Linux 2.4.0-t 15 1 28 3 1035 1 0.0K
rum.normn Linux 2.4.0-t 15 1 28 3 1016 1 0.0K
rum.normn Linux 2.2.18p 16 1 29 2 7658 2 0.6K
rum.normn Linux 2.2.18p 16 1 29 2 7692 2 0.7K
rum.normn Linux 2.2.18p 16 1 29 2 7281 2 0.7K
rum.normn Linux 2.2.18p 16 1 29 2 7600 2 0.7K

*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
--------- ------------- ---- ---- ---- ------ ------ ------ ------ ---- -----
rum.normn Linux 2.4.0-t 153 104 101 150 324 138 146 325 171
rum.normn Linux 2.4.0-t 154 106 99 151 326 137 142 326 194
rum.normn Linux 2.4.0-t 157 106 100 151 326 137 144 326 171
rum.normn Linux 2.4.0-t 158 110 100 151 326 138 144 326 171
rum.normn Linux 2.4.0-t 152 105 98 151 326 138 144 326 171
rum.normn Linux 2.2.18p 264 106 55 152 326 137 142 326 180
rum.normn Linux 2.2.18p 262 105 55 152 326 140 145 326 171
rum.normn Linux 2.2.18p 261 111 55 152 326 139 141 326 195
rum.normn Linux 2.2.18p 256 105 55 152 326 137 142 326 171

Memory latencies in nanoseconds - smaller is better
(WARNING - may not be correct, check graphs)
---------------------------------------------------
Host OS Mhz L1 $ L2 $ Main mem Guesses
--------- ------------- ---- ----- ------ -------- -------
rum.normn Linux 2.4.0-t 401 7.49 49.95 152.9
rum.normn Linux 2.4.0-t 401 7.48 50.00 153.0
rum.normn Linux 2.4.0-t 401 7.49 49.96 153.0
rum.normn Linux 2.4.0-t 401 7.49 49.96 153.0
rum.normn Linux 2.4.0-t 401 7.49 50.00 153.0
rum.normn Linux 2.2.18p 401 7.49 49.94 152.8
rum.normn Linux 2.2.18p 401 7.49 49.94 152.9
rum.normn Linux 2.2.18p 401 7.48 49.95 152.8
rum.normn Linux 2.2.18p 401 7.48 65.81 152.8
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