[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

That's the one of the running nautilus, should be useful this time

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

Here it is, the one with the backtrace you previously asked me

** Attachment added: "gdb-nautilus.txt"
   http://launchpadlibrarian.net/37021359/gdb-nautilus.txt

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

There are missing debug libraries that's why I stopped the process
without following the instruction, I need somebody to tell me which
packages to download to have the libraries I need, or I'm afraid the
backtrace won't be useful!

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

About our conversation, I filed the reports this morning.

However, I tried attaching the debug as mr. Coulson told me, I combined
the standard instructions with the ones you gave me Dave, loading the
libraries as it was pointed out in your post:

(gdb) symbol-file /usr/lib/debug/usr/bin/nautilus
Reading symbols from /usr/lib/debug/usr/bin/nautilus...done.

but sadly the output is a list of tons of missing debug libraries. I
attached the output, maybe you can help me finding the packages which
provide the libraries I'm missing.

Thanks in advance for your time.


** Attachment added: "gdb-nautilus.txt"
   http://launchpadlibrarian.net/37017881/gdb-nautilus.txt

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

I'm on it, I let you know if help is needed.
I it sounded offensive, I want you to know that it wasn't the goal of my 
observation. However to find bugs in Ubuntu depends on the kind of usage you do 
of the os, i'll make you an example:
I have a phenom II 965, I'm overclocking it that's why I need an accurate 
temperatures monitoring. In other OS it's not a big deal, but it took me 2 
hours to find a workaround because there are no k10 sensor scripts in ubuntu 
yet, and I had to compile a makefile (which, goes by itself it's absurd because 
this kind of architechtures exists from years nowadays).
The point is, an average pc user doesn't have the farthest idea on how to 
compile a makefile scripts and or which are the rules of writing this kind of 
files. An averege pc user doesn't even need the refined technology experience 
that leads most of the time into bugs or lack of software support (sadly not my 
case since using nautilus is a pretty basic task, as using an usbkey). The 
large part of ubuntu's user probably aren't even aware of experiencing bugs 
when they step into one, (an example of that could be the usb transfer speeds, 
which are completely ridiculous, most of all if the transfer to be made is 
between a win filesystem and a linux one) and start complaining about it on the 
ubuntu forum hoping for someone to accidentally crash into a solution (that's 
the case of the usb transfer speed, I could send you links which prove the 
presence of the issue since 7.04). 
Those factors, combined with the fact that the philosophy of free software 
needs the user not only to be a consumer but  to have an active role in the 
developing of the software (philosophy that all of us can see not everybody is 
fully embracing) absence of a pro team working on it for a livin' makes ubuntu 
very slow on dealing with some kind of problems, and saying that it's only a 
half of 1% of the people filing reports does not surprise me, not should you at 
this point, and as I've already pointed out the cause is not always the fact 
that ubuntu is a "rock solid system".

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

I don't wanna be rude but it seems that nobody gives a shxt!! It's obvious that 
free software isn't well developed as the other ones but at least one should 
have good support to fix the unbelievable number of bugs that it has attached..
Plus it seems to be a pretty serious bug since with the nautilus not working, 
it's pretty hard to use the OS..

I'm quite disappointed.

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

I already posted a screenshot showing both system monitor and top, you can see 
there that clearly it's nautilus the problem.
I don't think it is a thumbnails issue-related because most of the time it goes 
2.2 gigs big and 100% cpu there are no nautilus browser windows opened, it's 
only the desktop process

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

I already post a screenshot showing both system monitor and top, you can see 
there that clearly it's nautilus the problem.
I don't think it is a thumbnails issue-related because most of the time it goes 
2.2 gigs big and 100% cpu there are no nautilus browser windows opened, it's 
only the desktop process

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

Here we go.

If you push it upstream I'll be tankful! Send us the link


** Attachment added: "gdb-nautilus.txt"
   http://launchpadlibrarian.net/36812967/gdb-nautilus.txt

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

Ok, I think I made it: perhaps I left it open for too much time, but the
output is recursive so I think it's probably useful, you let me know.

** Attachment added: "backtrace.txt"
   http://launchpadlibrarian.net/36773129/backtrace.txt

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

I'm sorry man, in my country it was 3 a.m. when I tried to install it, I wasn't 
that much careful.
I see what I did wrong, I installed the correct debug symbols but it still says 
I don't have any! Watch by yourself.

** Attachment added: "moves2.txt"
   http://launchpadlibrarian.net/36740566/moves2.txt

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

Here's the moves I made, you let me know if I made something wrong.

** Attachment added: "moves.txt"
   http://launchpadlibrarian.net/36733210/moves.txt

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

Man I'm gettin' a little nervous here. I followed your instructions move by 
move. As a matter of fact I copied every single command and inserted it in the 
terminal in the ordinated fashion you gave me. I even checked again if 
nautilus-dbg was installed, and it is.
But still I get that the debug symbols are missing.

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

Here's the result of the backtrace I ran while nautilus was overloaded.

** Attachment added: "gdb-nautilus.txt"
   http://launchpadlibrarian.net/36714023/gdb-nautilus.txt

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

The thing I don't understand it's why they asked me to do this. Nautilus
does not crash: it devours all the system resources, but it works on.
The fact that it doesn't crash while using 2.2 gigs of memory does not
make it less of a problem. I don't really know if the debug will be of
any help. However I'll let it overload as usual then run gdb and post
the output.

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

Is anybody out there???

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

I made it work using the sudo prefix, but it still gives me this error:

This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
...
Reading symbols from /usr/bin/nautilus...(no debugging symbols found)...done.

probably because of the missing signatures that I posted before. I' ll post the 
debug files that It as given me.
If you'll provide me with good debug symbol archive signing keys I'll provide 
you more valuable infos.

** Attachment added: "gdb-nautilus.txt"
   http://launchpadlibrarian.net/36630688/gdb-nautilus.txt

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

and when I give the debug symbol archive signing key:

gpg --keyserver keyserver.ubuntu.com --recv-key 428D7C01 5E0577F2
gpg --check-sigs 428D7C01 # signed by key of Martin Pitt
gpg -o - --export 428D7C01 | sudo apt-key add -

It gives me as output:

2 signatures not checked due to missing keys

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

When I use gdb following this procedure:

Start gdb:
gdb 2>&1 | tee gdb-.txt
(gdb) handle SIG33 pass nostop noprint
(gdb) set pagination 0
(gdb) attach 
(If the program is running as root, use sudo gdb instead of just gdb above.)
Continue the :
(gdb) continue
The program will continue running. Perform any actions necessary to reproduce 
the crash. If the program hangs but doesn't crash you can press ctrl+c in gdb 
while the program is frozen and then continue with the next step.

When I give the command continue, in the system monitor nautilus is "stopped" 
(that's what's written in the cpu % value),
and if I go back to gdb pressing cntrl+c to start the debug it gives me:
this sign:
^C
and does not responds to any of my commands...

Help would be appreciated

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

Well I can say the concern is appreciated nonetheless. Let's hope then
that the A-class developer find a solution to this problem, It's quite
serious and a good os should not have to face something like that I
fear.

After all I think that this one, and the usb transfer speed are the two
major problems of this nice free software, have the two of 'em nailed
would remarkably improve the quality of the ubuntu experience.

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

Here the strace file my man. Show the world what it means to be ubuntu
programmer!

** Attachment added: "Strace.rar"
   http://launchpadlibrarian.net/36574399/Strace.rar

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

How do I stop strace? the log has reached 900 MB I think it's enough.
Even because the size of nautilus is approx 1300 MB so you should be
able to see what is the problem in the log..

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

:D :D sorry

I'll leave it open with strace and post the results

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[Bug 492810] Re: Nautilus uses 100% cpu after downloading torrent

[Azraele]

Well I'll do my best to find a procedure but the strange thing is that i
don't have really to do anything to make the problem happen, in fact
yesterday I killed nautilus (because of the unbelievable size) then I
started it again (since to have a nautilus process I don't really need
to open a file browsing window, I have one since the system boot, it's
the desktop one i think, problem is when I boot it is 24 megs big and
then it starts growing like a pie) and left it opened overnight with
ktorrent downloading. Since I am the only user of the pc, I can solidly
state that nobody touched it all the night: without any action it grows
by himself. Nonetheless I will left it opened with strace, problem is
when i give the command :

strace -Ff -tt -p <14226> 2>&1 | tee strace-.log

where 14226 is the process id it gives me this output:

bash: syntax error near unexpected token `14226'

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[Bug 492810] Re: Nautilus uses 100% cpu

[Azraele]

Well the problem is a have 4 gigs of memory, and as you can see in my
screenshot my system has never used since i built it any swap memory.
The second point is that nautilus is using 2.2 gigs of memory: isn't
that unusual that with only one nautilus window opened it is using so
much memory? and then again: how can it use 100% cpu? you can see it in
the screenshot too! of course my processor doesn't get stuck because it
has 4 cores, which are pretty difficult to get stuck altogheter since
their used to multitask different process simultaneously and never use 4
cores for one process, but if it were the case my cpu would be stuck
with this stats: seems a problem to me but maybe i'm wrong..

** Attachment added: "Screenshot-1.png"
   http://launchpadlibrarian.net/36524977/Screenshot-1.png

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[Bug 492810] Re: Nautilus uses 100% cpu

[Azraele]

First o f all the distro I am using is ubuntu 9.10, with the latest
kernel and updates. I opended ktorrent, and left it opened overnight
downloading as usual. I use nautilus as everybody does, moving though
dirs moving files (usually large ones): but i am a bit chaotic  that's
why I open lots of nautilus windows, which it's what made me notice that
the nautilus was slowing down. So I closed all the windows opened but
from the system monitor applet i noticed the cpu was stuck at 100%. The
following morning doing the same thing I noticed that when I opened a
new nautilus window or broswed an internet page with many flash video
the nautilus size increased drastically: the problem is when I closed
firefox or the file browser the memory usage of the nautilus process (
of course i monitored this with system monitor too) did not decrease as
expect but kept the same size: obviously with this behavior the process
size increased every time I used something related to it reaching the
unbeliavable size this morning of 1.7 gigs.

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[Bug 492810] Re: Nautilus uses 100% cpu

[Azraele]

I've just noticed that with no nautilus windows open it is using 876
Megs of memory wich is just too much, even vista uses less memory!!! and
I am quite certain that the memory use will increase since when
yesterday it started using 100% cpu ubunutu was using 2.0 Gigs of
memory, which of course with only ktorrent open is too much.

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[Bug 492810] [NEW] Nautilus uses 100% cpu

[Azraele]

Public bug reported:

Binary package hint: nautilus

After some hours i'm downloading with ktorrent, or azureus, or
Trasmission (i've tried almost all of them) nautilus suddenly goes 100%
and stays there 'till i reboot or shut down the process. I'm using
ubuntu 9.10 64 bit version but i experienced this problem since ubuntu
8.04, i tried even 32 bit versions but the problem pops up nonetheless.
I' m not a computer genius so if you need more info just ask (it's
better if you give me instructions because i'm not familiar with
debugging)

** Affects: nautilus (Ubuntu)
 Importance: Undecided
 Status: New

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