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Old 09-12-2011, 08:45 PM
Bill Nottingham
 
Default tracker in F16

Adam Williamson (awilliam@redhat.com) said:
> So, in F16, totem has grown a dependency on tracker, via grilo-plugins.
> This means tracker is now present and active in default F16 installs,
> where it wasn't before. This is leading to the problems that have been
> endemic to desktop search mechanisms ever since the first one crawled
> out of the fiery pits of hell - excessive resource consumption, viz:
>
> https://lists.fedoraproject.org/pipermail/test/2011-September/102688.html
> https://lists.fedoraproject.org/pipermail/test/2011-September/102770.html
>
> peter robinson reckons it would be easy to split out grilo-plugins'
> dependency on tracker and hence get tracker out of the default package
> set again, if that's desired:

Note that gnome-documents, now a default package, also requires tracker.

Bill
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Old 09-12-2011, 09:01 PM
Adam Williamson
 
Default tracker in F16

On Mon, 2011-09-12 at 16:45 -0400, Bill Nottingham wrote:
> Adam Williamson (awilliam@redhat.com) said:
> > So, in F16, totem has grown a dependency on tracker, via grilo-plugins.
> > This means tracker is now present and active in default F16 installs,
> > where it wasn't before. This is leading to the problems that have been
> > endemic to desktop search mechanisms ever since the first one crawled
> > out of the fiery pits of hell - excessive resource consumption, viz:
> >
> > https://lists.fedoraproject.org/pipermail/test/2011-September/102688.html
> > https://lists.fedoraproject.org/pipermail/test/2011-September/102770.html
> >
> > peter robinson reckons it would be easy to split out grilo-plugins'
> > dependency on tracker and hence get tracker out of the default package
> > set again, if that's desired:
>
> Note that gnome-documents, now a default package, also requires tracker.

oop, good catch. I did suspect it's going to become more a part of the
GNOME Experience from now on, though I think I missed the bit where
tracker beat zeitgeist =)
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http://www.happyassassin.net

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Old 09-12-2011, 10:57 PM
Bastien Nocera
 
Default tracker in F16

On Mon, 2011-09-12 at 14:01 -0700, Adam Williamson wrote:
> On Mon, 2011-09-12 at 16:45 -0400, Bill Nottingham wrote:
> > Adam Williamson (awilliam@redhat.com) said:
> > > So, in F16, totem has grown a dependency on tracker, via grilo-plugins.
> > > This means tracker is now present and active in default F16 installs,
> > > where it wasn't before. This is leading to the problems that have been
> > > endemic to desktop search mechanisms ever since the first one crawled
> > > out of the fiery pits of hell - excessive resource consumption, viz:
> > >
> > > https://lists.fedoraproject.org/pipermail/test/2011-September/102688.html
> > > https://lists.fedoraproject.org/pipermail/test/2011-September/102770.html
> > >
> > > peter robinson reckons it would be easy to split out grilo-plugins'
> > > dependency on tracker and hence get tracker out of the default package
> > > set again, if that's desired:
> >
> > Note that gnome-documents, now a default package, also requires tracker.
>
> oop, good catch. I did suspect it's going to become more a part of the
> GNOME Experience from now on, though I think I missed the bit where
> tracker beat zeitgeist =)

If tracker is proving to be a pain, file upstream bugs. Splitting the
grilo tracker plugin to a sub-package is not the right way to fix this.

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Old 09-14-2011, 03:41 AM
Cosimo Cecchi
 
Default tracker in F16

Hi Adam,

On Mon, 2011-09-12 at 14:01 -0700, Adam Williamson wrote:

> oop, good catch. I did suspect it's going to become more a part of the
> GNOME Experience from now on, though I think I missed the bit where
> tracker beat zeitgeist =)

Yeah, tracker is a required dependency of gnome-documents now. As
Bastien says, we should try to identify and fix possible bugs and
resource issues upstream.

I also think tracker should use a different default configuration; these
are the changes I think we should make:
- removable media indexing should be off by default - I don't know if
this is used by the totem grilo integration, but it's not by
gnome-documents. Anyway, I think the best way to approach this is
tracker should just be aware of removable media and applications who
make use of them should be able to have them crawled on-demand, but that
needs fixing in tracker first.
- indexing should be enabled on battery - right now it's disabled. If we
disable indexing on battery, applications like gnome-documents will be
"locked" into the last view of the local file entries in the tracker
database before you unplugged the cable, which is very ugly.

Having used tracker on by default for a bit now it seems that after the
initial crawling, which is an expensive operation, I didn't notice any
particular increase in resource usage. With removable devices indexing
off, this should ideally be a one-shot operation.

As a side note, I also took some time to clean up the tracker spec file
a bit (patches at [1]); I think the flickr miner (which doesn't use
g-o-a and is not easily configurable) should be split in a separate
package, disabled by default.

[1] http://people.gnome.org/~cosimoc/tracker-patches/

Cosimo


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Old 09-14-2011, 01:41 PM
Matthias Clasen
 
Default tracker in F16

On Tue, 2011-09-13 at 23:41 -0400, Cosimo Cecchi wrote:
> Hi Adam,
>
> On Mon, 2011-09-12 at 14:01 -0700, Adam Williamson wrote:
>
> > oop, good catch. I did suspect it's going to become more a part of the
> > GNOME Experience from now on, though I think I missed the bit where
> > tracker beat zeitgeist =)
>
> Yeah, tracker is a required dependency of gnome-documents now. As
> Bastien says, we should try to identify and fix possible bugs and
> resource issues upstream.
>
> I also think tracker should use a different default configuration; these
> are the changes I think we should make:
> - removable media indexing should be off by default - I don't know if
> this is used by the totem grilo integration, but it's not by
> gnome-documents. Anyway, I think the best way to approach this is
> tracker should just be aware of removable media and applications who
> make use of them should be able to have them crawled on-demand, but that
> needs fixing in tracker first.
> - indexing should be enabled on battery - right now it's disabled. If we
> disable indexing on battery, applications like gnome-documents will be
> "locked" into the last view of the local file entries in the tracker
> database before you unplugged the cable, which is very ugly.
>
> Having used tracker on by default for a bit now it seems that after the
> initial crawling, which is an expensive operation, I didn't notice any
> particular increase in resource usage. With removable devices indexing
> off, this should ideally be a one-shot operation.
>
> As a side note, I also took some time to clean up the tracker spec file
> a bit (patches at [1]); I think the flickr miner (which doesn't use
> g-o-a and is not easily configurable) should be split in a separate
> package, disabled by default.
>
> [1] http://people.gnome.org/~cosimoc/tracker-patches/

These changes sound like a good idea, and should help a lot to keep the
'tracker-induced rage' down. CC'ing the tracker package maintainer to
get his ok before we enact this.

Matthias

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Old 09-14-2011, 03:15 PM
Evandro Giovanini
 
Default tracker in F16

Em Ter, 2011-09-13 ąs 23:41 -0400, Cosimo Cecchi escreveu:
> - indexing should be enabled on battery - right now it's disabled. If we
> disable indexing on battery, applications like gnome-documents will be
> "locked" into the last view of the local file entries in the tracker
> database before you unplugged the cable, which is very ugly.
>

Any idea how much of an impact on battery life this would imply? It
already seems the kernel keeps introducing regressions in this area and
overall things might look quite bad from past releases.

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Old 09-14-2011, 04:02 PM
Richard Hughes
 
Default tracker in F16

On 14 September 2011 16:15, Evandro Giovanini <efgiovanini@gmail.com> wrote:
> Any idea how much of an impact on battery life this would imply?

Open up gnome-power-statistics, click "Processor" and see if tracker
is keeping the CPU busy. Every wakeup means more power.

Simplifying, if tracker isn't waking, then it's not consuming battery.

Richard.
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Old 09-14-2011, 04:22 PM
Michael Ekstrand
 
Default tracker in F16

On 09/13/2011 10:41 PM, Cosimo Cecchi wrote:
> Hi Adam,
>
> On Mon, 2011-09-12 at 14:01 -0700, Adam Williamson wrote:
>
>> oop, good catch. I did suspect it's going to become more a part of the
>> GNOME Experience from now on, though I think I missed the bit where
>> tracker beat zeitgeist =)
>
> Yeah, tracker is a required dependency of gnome-documents now. As
> Bastien says, we should try to identify and fix possible bugs and
> resource issues upstream.
>
> I also think tracker should use a different default configuration; these
> are the changes I think we should make:
> - removable media indexing should be off by default - I don't know if
> this is used by the totem grilo integration, but it's not by
> gnome-documents. Anyway, I think the best way to approach this is
> tracker should just be aware of removable media and applications who
> make use of them should be able to have them crawled on-demand, but that
> needs fixing in tracker first.
> - indexing should be enabled on battery - right now it's disabled. If we
> disable indexing on battery, applications like gnome-documents will be
> "locked" into the last view of the local file entries in the tracker
> database before you unplugged the cable, which is very ugly.

I think it would also be good to evaluate the default inotify limits and
consider raising them (or decreasing the number of inotify watches
Tracker uses). When running Tracker, I've had other software such as
Dropbox complain that it cannot use inotify because I have too many
watches registered.

- Michael

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Old 09-14-2011, 05:01 PM
Evandro Giovanini
 
Default tracker in F16

Em Qua, 2011-09-14 ąs 17:02 +0100, Richard Hughes escreveu:
> On 14 September 2011 16:15, Evandro Giovanini <efgiovanini@gmail.com> wrote:
> > Any idea how much of an impact on battery life this would imply?
>
> Open up gnome-power-statistics, click "Processor" and see if tracker
> is keeping the CPU busy. Every wakeup means more power.
>
> Simplifying, if tracker isn't waking, then it's not consuming battery.
>
> Richard.

I had forgotten how nice gnome-power-statics is!

For me tracker is basically not consuming battery, I guess this option
is a relic from old days.

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Old 09-14-2011, 05:33 PM
Cosimo Cecchi
 
Default tracker in F16

On Wed, 2011-09-14 at 11:22 -0500, Michael Ekstrand wrote:

> I think it would also be good to evaluate the default inotify limits and
> consider raising them (or decreasing the number of inotify watches
> Tracker uses). When running Tracker, I've had other software such as
> Dropbox complain that it cannot use inotify because I have too many
> watches registered.

I must say I've never seen this error (despite using Dropbox), but it
seems like a valid thing to investigate into (Ideally tracker should use
something like fanotify [1] instead and be happy). Please file a bug
(possibly upstream) if you encounter a similar bug again.

[1] http://lwn.net/Articles/360955/

Cosimo

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