nautilus eating 1 CPU and doing lots of I/O

[Jeremy Messenger]

On Wed, Mar 20, 2013 at 1:30 PM, Kevin Oberman <rkoberman at gmail.com> wrote:
> On Wed, Mar 20, 2013 at 9:37 AM, Jeremy Messenger
> <mezz.freebsd at gmail.com> wrote:
>> On Wed, Mar 20, 2013 at 11:24 AM, Kevin Oberman <rkoberman at gmail.com> wrote:
>>> On Wed, Mar 20, 2013 at 9:04 AM, Jeremy Messenger
>>> <mezz.freebsd at gmail.com> wrote:
>>>> On Wed, Mar 20, 2013 at 10:24 AM, Jeremy Messenger
>>>> <mezz.freebsd at gmail.com> wrote:
>>>>> On Wed, Mar 20, 2013 at 1:13 AM, Kevin Oberman <rkoberman at gmail.com> wrote:
>>>>>> On Tue, Mar 19, 2013 at 10:03 PM, Kevin Oberman <rkoberman at gmail.com> wrote:
>>>>>>>
>>>>>>> Since I updated nautilus a few days ago I am seeing very odd behavior.
>>>>>>>
>>>>>>> When I open a nautilus window, I see my CPUs at 20-25% load, mostly in nautilus. I/O jumps from near zero to several MBps,. It varies in the ones I tried between 4 and 16 MBps depending on the number of files (not folders). ktrace shows lots of reads returning "Resource temporarily unavailable". I also note that most of my thumbnails are not showing up, just the generic icons for the file type. I'm guessing some issue with finding, loading or generating the thumbnails.
>>>>>>>
>>>>>>> I have no idea what to look for to provide any real data or to track this.
>>>>>>
>>>>>> I just noticed this post to ports@ made earlier today pointing out the
>>>>>> problem, but not a good solution.
>>>>>> :
>>>>>> Sergio de Almeida Lenzi Tue, 19 Mar 2013 12:42:16 -0700
>>>>>>
>>>>>> Hello,,
>>>>>>
>>>>>> On update ports via svn from 2013-03-10 to today,
>>>>>> after a portmaster -a, the system (gnome2)
>>>>>> stopped to show any thumbnails..
>>>>>>
>>>>>> The main reason is that it writes the thumbnail
>>>>>> in .thumbnails/normal/xxxxxxx.png
>>>>>> but than tries to read it from .cache/thumbnails/normal/xxxxxxxxx.png
>>>>>>
>>>>>> Can some "nautilus guru"  tell me how to fix this???
>>>>>>
>>>>>> for now I create a liink in the .cache/thumbnails -> ./thumbnails  this
>>>>>> works
>>>>>> but is not a solution...
>>>>>
>>>>> That is very weird problem. Gotta figure where the .cache is at one of
>>>>> port. Must be one of kwm's recently update.
>>>>
>>>> Found it, it's related with the glib20 update. See here:
>>>>
>>>> https://bugzilla.gnome.org/show_bug.cgi?id=675168
>>>>
>>>> I found it from in its NEWS, it's in the "Overview of changes from
>>>> GLib 2.33.2 to 2.33.3" section.
>>>>
>>>> It looks like we will have to search for a better solution. By either
>>>> patch in GNOME 2 stuff or patch in glib20 to make it fallback
>>>> (compatible). The developer will not create a fallback for old stuff's
>>>> sake.
>>>
>>> Sigh. So some apps are still assuming .thumbnails and glib has moved
>>
>> Which apps? Add patch in gnome-desktop should take care if other apps
>> are depend on gnome-desktop.
>
> OK. I don't know enough of Gnome 2 organization to know that, so it's pretty
> straight-forward.
>
>>> to 'doing the right thing" but not allowed for apps that don't yet
>>> know it. For nautilus it creates an endless loop of looking for the
>>> thumbnail in A, not finding it, calling the routines to create a new
>>> thumbnail which puts it in B, and then repeats forever. The CPU is
>>> eaten and I/O generated in making new thumbs continually.
>>>
>>> What all creates the thumbnails? If it is a single place that contains
>>> the location, it's not too much to fix, but finding it could be
>>> tricky. I'm hunting for it now in header files but there are a LOT of
>>> them that contain "thumbnails" and I have just started looking.
>>>
>>> For now I'm taking the easy way out by creating a symlink as Sergio
>>> suggested. Not the right answer, I know, but it should work. I'm also
>>> copying him as he posted to ports and may not read gnome at .
>>
>> Please try http://people.freebsd.org/~mezz/patch/patch-glib2_34 by put
>> it in the x11/gnome-desktop/files/ then reinstall it. Remove the
>> symlink.
>
> No symlink and the thumbs are generated and CPU and I/O are normal. Looks good!
> Looks ready to commit.
>
> Thanks!

I have committed it. Thanks too!

> --
> R. Kevin Oberman, Network Engineer
> E-mail: rkoberman at gmail.com



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