Re: Cerebro (was Re: Almost 50% less free memory in joyride-2302 compared with Update.1 (708))
I did the following as a basic test for memory usage of various python modules. I did the test on my computer, a 32-bit Centrino laptop running ubuntu. Let's start with the following code: import gobject mainloop = gobject.MainLoop() mainloop.run() Cost: 1.2MB of memory (1.2MB total) Add a dummy class, like the following: import dbus import dbus.service class Dummy(dbus.service.Object): pass Additional cost: 0.9MB of memory (2.1MB total) Importing some more modules, like the following: import time, sys, os, traceback from select import select from socket import * from random import random from struct import pack, unpack from optparse import OptionParser from os.path import basename Additional cost: 1.0MB of memory (3.1MB total) Running the same thing as above as root: Additional cost: 2.8MB of memory (5.9MB total) (WHY?!?!?) Nothing specific to cerebro up to this point. Running Cerebro fully-blown as root: Additional cost: 1.3MB of memory (7.2MB total) It doesn't seem to me that there's much I can do, except for writing some parts of Cerebro in C. Pol -- Polychronis Ypodimatopoulos Graduate student Viral Communications MIT Media Lab Tel: +1 (617) 459-6058 http://www.mit.edu/~ypod/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Cerebro (was Re: Almost 50% less free memory in joyride-2302 compared with Update.1 (708))
On Sun, 24 Aug 2008, Polychronis Ypodimatopoulos wrote: I did the following as a basic test for memory usage of various python modules. I did the test on my computer, a 32-bit Centrino laptop running ubuntu. Let's start with the following code: import gobject mainloop = gobject.MainLoop() mainloop.run() Cost: 1.2MB of memory (1.2MB total) Add a dummy class, like the following: import dbus import dbus.service class Dummy(dbus.service.Object): pass Additional cost: 0.9MB of memory (2.1MB total) Importing some more modules, like the following: import time, sys, os, traceback from select import select from socket import * from random import random from struct import pack, unpack from optparse import OptionParser from os.path import basename Additional cost: 1.0MB of memory (3.1MB total) Running the same thing as above as root: Additional cost: 2.8MB of memory (5.9MB total) (WHY?!?!?) I wouldn't be surprised to leard that one of the modules included a bunch of extra functionality if you are root. for example dbus may find a bunch more things that you can do if you are root. it would probably be worthwhile narrowing down which module(s) increase their size if you are root. David Lang Nothing specific to cerebro up to this point. Running Cerebro fully-blown as root: Additional cost: 1.3MB of memory (7.2MB total) It doesn't seem to me that there's much I can do, except for writing some parts of Cerebro in C. Pol ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Cerebro (was Re: Almost 50% less free memory in joyride-2302 compared with Update.1 (708))
On Fri, Aug 22, 2008 at 1:47 PM, James Cameron [EMAIL PROTECTED] wrote: I also tried using ps_mem.py to compare memory used by processes, but the method that ps_mem.py uses has changed as a result of kernel change. http://dev.laptop.org/~quozl/2008-08-22-ps-mem/ has the samples that I took, showing how they are difficult to compare. Cerebro is running there for some reason (I've seen it in another bug report already). I can't reproduce on a clean 2328 joyride, not sure if it has been fixed or something weird is going on. Marco ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Cerebro (was Re: Almost 50% less free memory in joyride-2302 compared with Update.1 (708))
On Sat, Aug 23, 2008 at 5:16 AM, Marco Pesenti Gritti [EMAIL PROTECTED] wrote: Cerebro is running there for some reason (I've seen it in another bug report already). I can't reproduce on a clean 2328 joyride, not sure if it has been fixed or something weird is going on. Cerebro is enabled in joyride builds, started from /etc/init.d; it should be disabled in 8.2 builds at the moment. How much memory usage is cerebro responsible for? --scott -- ( http://cscott.net/ ) ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Cerebro (was Re: Almost 50% less free memory in joyride-2302 compared with Update.1 (708))
On Sat, Aug 23, 2008 at 3:09 PM, C. Scott Ananian [EMAIL PROTECTED] wrote: On Sat, Aug 23, 2008 at 5:16 AM, Marco Pesenti Gritti [EMAIL PROTECTED] wrote: Cerebro is running there for some reason (I've seen it in another bug report already). I can't reproduce on a clean 2328 joyride, not sure if it has been fixed or something weird is going on. Cerebro is enabled in joyride builds, started from /etc/init.d; it should be disabled in 8.2 builds at the moment. How much memory usage is cerebro responsible for? 6.5 Mib according to ps_mem You are right, it's enabled in joyride... it's failing for me because it can't find msh0 (not sure why). Marco ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Cerebro (was Re: Almost 50% less free memory in joyride-2302 compared with Update.1 (708))
On Sat, Aug 23, 2008 at 1:25 PM, Marco Pesenti Gritti [EMAIL PROTECTED] wrote: On Sat, Aug 23, 2008 at 3:09 PM, C. Scott Ananian [EMAIL PROTECTED] wrote: On Sat, Aug 23, 2008 at 5:16 AM, Marco Pesenti Gritti [EMAIL PROTECTED] wrote: Cerebro is running there for some reason (I've seen it in another bug report already). I can't reproduce on a clean 2328 joyride, not sure if it has been fixed or something weird is going on. Cerebro is enabled in joyride builds, started from /etc/init.d; it should be disabled in 8.2 builds at the moment. How much memory usage is cerebro responsible for? 6.5 Mib according to ps_mem You are right, it's enabled in joyride... it's failing for me because it can't find msh0 (not sure why). Marco ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel Same for me. Joyride 2325 has cerebro enabled, but it aborts because device msh0 cannot be found. This also hangs up the shutdown when trying to kill cerebro. So somehow cerebro is enabled in 2325. Also idle suspend is enabled again in 2325, while it should be off. The msh0 disappearing might have something to do with the new libertas firmware. I also have much more problems with wireless connections. Will do some more testing. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Cerebro (was Re: Almost 50% less free memory in joyride-2302 compared with Update.1 (708))
ton van overbeek wrote: Also idle suspend is enabled again in 2325, while it should be off. i think this was intentional. now that we're building separate release (Subject: New release8.2 build 7nn) and joyride streams, idle suspend was re-enabled in joyride in order to help continue flushing out suspend-related bugs. paul =- paul fox, [EMAIL PROTECTED] ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Cerebro (was Re: Almost 50% less free memory in joyride-2302 compared with Update.1 (708))
Marco Pesenti Gritti wrote: 6.5 Mib according to ps_mem You are right, it's enabled in joyride... it's failing for me because it can't find msh0 (not sure why). Marco I filed #8128 to address the memory usage that seems excessive. I have also disabled cerebro from start-up while this is being investigated and the issue with blocking shutdown process (#8108). Should be picked up at the next version of joyride. p. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
