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Old 05-17-2008, 10:03 PM
Uwe Hermann
 
Default Bug#481684: Please enable CONFIG_LATENCYTOP so we can use the latencytop tool

Package: linux-image-2.6.25-2-686
Version: 2.6.25-3
Severity: normal

Hi,

please consider enabling CONFIG_LATENCYTOP in the kernel, as it's needed
for the 'latencytop' utility to work. latencytop itself is already in
unstable. See also http://latencytop.org/.

The current kernels have
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
# CONFIG_LATENCYTOP is not set
but both options are needed.

I must admit I do _not_ know if there are any negative effects when
enabling that setting. However, I have rebuilt my kernel
(Debian 2.6.25-3 version) with CONFIG_LATENCYTOP and it _did_ make
latencytop work fine for me.


Thanks, Uwe.
--
http://www.hermann-uwe.de | http://www.holsham-traders.de
http://www.crazy-hacks.org | http://www.unmaintained-free-software.org



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Old 05-18-2008, 06:02 AM
Bastian Blank
 
Default Bug#481684: Please enable CONFIG_LATENCYTOP so we can use the latencytop tool

severity 481684 wishlist
tags 481684 wontfix
thanks

On Sun, May 18, 2008 at 12:03:32AM +0200, Uwe Hermann wrote:
> please consider enabling CONFIG_LATENCYTOP in the kernel, as it's needed
> for the 'latencytop' utility to work. latencytop itself is already in
> unstable. See also http://latencytop.org/.

Latencytop support needs too much debug-only features. As we don't build
debug images, this is wontfix for now.

| config LATENCYTOP
| bool "Latency measuring infrastructure"
| select FRAME_POINTER if !MIPS
| select KALLSYMS
| select KALLSYMS_ALL
| select STACKTRACE
| select SCHEDSTATS
| select SCHED_DEBUG

> I must admit I do _not_ know if there are any negative effects when
> enabling that setting. However, I have rebuilt my kernel
> (Debian 2.6.25-3 version) with CONFIG_LATENCYTOP and it _did_ make
> latencytop work fine for me.

You should check the complete config for differences.

Bastian

--
If some day we are defeated, well, war has its fortunes, good and bad.
-- Commander Kor, "Errand of Mercy", stardate 3201.7



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