Hi,
On Mon, 17 Dec 2007, Ingo Juergensmann wrote:
> I've upgraded the following machines lately to kernel 2.6.23-m68k and
> etch-m68k:
You might want to test 2.6.22 as well. The new scheduler hasn't exactly
been an improvement for us, here are some lmbench numbers:
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
--------- ------------- ------ ------ ------ ------ ------ ------- -------
sodom Linux 2.6.22- 52.4 125.9 123.5 158.8 153.6 174.8 153.6
sodom Linux 2.6.22- 49.9 142.4 126.5 158.5 156.8 176.6 152.9
sodom Linux 2.6.22- 50.2 128.6 129.5 170.0 158.9 168.9 151.5
sodom Linux 2.6.22- 58.7 120.5 124.8 160.8 161.8 162.6 148.5
sodom Linux 2.6.22- 51.1 133.3 123.2 167.6 155.1 174.2 146.8
sodom Linux 2.6.23- 112.0 176.6 159.8 256.9 216.4 268.8 242.1
sodom Linux 2.6.23- 112.4 177.5 164.8 259.5 232.5 263.9 240.9
sodom Linux 2.6.23- 114.0 184.1 187.8 263.6 215.6 278.8 242.0
sodom Linux 2.6.23- 106.8 206.8 169.2 253.6 217.0 263.5 237.9
sodom Linux 2.6.23- 114.5 184.4 173.5 271.5 226.2 268.5 246.9
sodom Linux 2.6.23- 133.1 212.0 187.5 283.9 300.2 294.0 260.6
sodom Linux 2.6.23- 131.6 200.8 194.5 286.9 248.5 299.4 280.7
sodom Linux 2.6.23- 134.6 215.5 233.8 267.2 261.5 303.1 287.4
sodom Linux 2.6.23- 137.4 196.9 240.2 257.7 267.8 289.4 262.1
sodom Linux 2.6.23- 133.3 206.6 189.8 280.1 269.8 297.9 267.6
The last 5 are lmbench runs started with nice.
bye, Roman
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