Re: 2.5.54-mm3

uaca
2003-01-05T17:56:16Z

On Sat, Jan 04, 2003 at 01:00:38AM -0800, Andrew Morton wrote:
>
> http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.54/2.5.54-mm3/

It seems to me that the patch you pointed here doesn't include the latency
instrumentation.

Where it is the needed instrumentation to meassure it?

In http://www.zip.com.au/~akpm/linux/ the are no timepeg/intlat patches for
2.5...

>
> Several patches here which fix pretty much the last source of long
> scheduling latency stalls in the core kernel - long-held page_table_lock
> during pagetable teardown.
>
> The preemptible kernel now achieves around 500 microsecond worst-case
> latency on a 500MHz PIII (with a slow memory system). This is about as

[...]

Ulisses

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