Gentoo Archives: gentoo-user

From: Mick <michaelkintzios@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Which cputime accounting for kernel-3.10.7 ?
Date: Sat, 24 Aug 2013 11:33:01
Message-Id: 201308241231.26284.michaelkintzios@gmail.com
In Reply to: Re: [gentoo-user] Which cputime accounting for kernel-3.10.7 ? by Bruce Hill
1 On Saturday 24 Aug 2013 12:14:14 Bruce Hill wrote:
2 > On Sat, Aug 24, 2013 at 10:40:25AM +0100, Mick wrote:
3 > > Hi All,
4 > >
5 > > I'm about to compile a new kernel and running oldconfig brings up this
6 > > new set of options. There is no help available, grep-ping through the
7 > > Documentation wasn't particularly revealing and I haven't found anything
8 > > in Google to help me decide what I need/want out of the three:
9 > > ===================================================
10 > >
11 > > * CPU/Task time and stats accounting
12 > > *
13 > > Cputime accounting
14 > >
15 > > 1. Simple tick based cputime accounting (TICK_CPU_ACCOUNTING)
16 > >
17 > > > 2. Full dynticks CPU time accounting (VIRT_CPU_ACCOUNTING_GEN) (NEW)
18 > > >
19 > > 3. Fine granularity task level IRQ time accounting
20 > > (IRQ_TIME_ACCOUNTING)
21 > >
22 > > choice[1-3]: ?
23 > >
24 > > There is no help available for this option.
25 > > Prompt: Cputime accounting
26 > >
27 > > Location:
28 > > -> General setup
29 > >
30 > > -> CPU/Task time and stats accounting
31 > >
32 > > Defined at init/Kconfig:297
33 > > Selected by: m
34 > >
35 > > ===================================================
36 > >
37 > > Option 2 seems to have been selected by default, but I am not sure if
38 > > this is right for a laptop.
39 > >
40 > > What have you chosen and why?
41 >
42 > Each of the three options has it's own individual help.
43
44 Oops! Thanks for pointing this out and sorry for the noise ... I had only
45 tried "?" instead of "<option_number> ?"
46
47 Help is also visible and available when using menuconfig.
48
49 The 2nd option is best for my needs.
50 --
51 Regards,
52 Mick

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