Kernel Tweaks For Improved Responsiveness

[speculatrix]

contains some interesting points especially about swap space

http://members.optusnet.com.au/ckolivas/kernel/

[koen]

contains some interesting points especially about swap space

http://members.optusnet.com.au/ckolivas/kernel/
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That is a fairly x86 specific page, a lot of that stuff doesn't apply to ARM. The guides on free-electrons.com are much better, and cover more than the kernel.

[speculatrix]

That is a fairly x86 specific page, a lot of that stuff doesn't apply to ARM. The guides on free-electrons.com are much better, and cover more than the kernel.
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great pointer, interesting site... thanks!

[Da_Blitz]

the one i am intrested is the comperessed cache patches

it has never been exsetsivly tested and thats why ih never made it into the mainline as most people dobuhted how effective it would be and most of them had huge amounts of ram however on somthing like a Z where i use to hover around 80% mem usage on the sharp rom i would be intreseted in the impact of this patch

benchmarking it would be a difficult problem however, what do you test for?

[adf]

the one i am intrested is the comperessed cache patches

it has never been exsetsivly tested and thats why ih never made it into the mainline as most people dobuhted how effective it would be and most of them had huge amounts of ram however on somthing like a Z where i use to hover around 80% mem usage on the sharp rom i would be intreseted in the impact of this patch

benchmarking it would be a difficult problem however, what do you test for?
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if I remember right, webserver scaling was affected noticeably by cache handling (From the g4 vs 86 and linux vs mac on powerpc articles a year or two ago. I bet a google for linux vs osx benchmark would get something along those lines)

[Da_Blitz]

there are some really nice speed ups you can get by messing with the /proc filesystem. some are really good if you have a microdrive PDA

good ones include:
increasing the entropy cache
"laptop mode"

and some others that i cant think of off the top of my head.

there are a couple of good ones in the /sys tree as well, you can turn off LEDs or change what they respond to. changing the schedular on filesystems (for flash media noop is a better choice due to the speed of the media and the low latency, where as compleatly fair scheduling is a better choice for microdrives)