Gentoo Archives: gentoo-user

From: Mark David Dumlao <madumlao@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Systemd and PyTimeChart
Date: Tue, 23 Sep 2014 21:14:09
Message-Id: CAG2nJkOqonMAk=q1eiLpdZeKvHjQxL8=bQcjLyEidtf80NUU0w@mail.gmail.com
In Reply to: [gentoo-user] Systemd and PyTimeChart by James
1 On Sep 24, 2014 2:34 AM, "James" <wireless@×××××××××××.com> wrote:
2 >
3 > Hello
4 >
5 > PyTimeChart is another wonderful tool that complements
6 > Ftrace/trace-cmd/KernelShark. [1] The systemd supporters would be keenly
7 > wise if they added pytimechart to Gentoo, so those (systemd) reticent to
8 > change, can actually see just how wonderful systemd is Here in
9 > slide (26) we see "intel" extolling systemd. If Intel thinks systemd
10 > is wonderful, then it must be wonderful. (?) [2] as shown in the paper
11 > "Elcell_tardy.pdf".
12 >
13 >
14 > PyTimeChart is also wonderful in that it provides a graphical way to
15 > spot problems quickly. Most major (linux) distros have both PyTimeChart
16 > and Ftrace/trace-cmd/KernelShark. Together folks use PyTimeChart to
17 > monitor and identify low-level or low-level-application-interaction
18 > problems, and then use Ftrace/trace-cmd/KernelShark for fine grain
19 > filtering, collection and analysis of those
20 low-level-application-interaction
21 > issues.
22 >
23
24 Im just going to go out on a limb here, but is it possible that you dont
25 understand what either systemd or pytimechart do?
26
27 both your description of pytimechart and the rejection of intel's claim...
28 seem to point to a lack of understanding.
29
30 Intel isnt saying systemd is amazing only that it doesnt operate by
31 spawning many short-lived processes in the same way as upstart or sysvinit
32 (which start shell scripts which start programs). systemd starts the
33 services directly based on the contents of the units.
34
35 pytimechart cannot be used to monitor events - its just a visualizer for
36 existing trace mechanisms.
37
38 > I have not opened a bug requesting PyTimeChart.
39 >
40
41 perhaps you should.
42
43 > hth,
44 > James
45 >
46 >
47 >
48 >
49 > [1] https://pythonhosted.org/pytimechart/index.html
50 >
51 > [2] elinux.org/images/6/63/Elce11_tardy.pdf
52 >
53 >

Replies

Subject Author
[gentoo-user] Re: Systemd and PyTimeChart James <wireless@×××××××××××.com>