Re: Re: High IO while config is open.

Ha! Found another clue!

For some reason the file .local/share/recently-used.xbel gets written
every second or so, and it's size is roughly 650kb on my system. After
removing that file the disk-IO went down to something between 20kb to
50kb.

Here is the interesting part from strace:

open("/home/robert/.local/share/recently-used.xbel.3YMBKW",
O_RDWR|O_CREAT|O_EXCL|O_LARGEFILE, 0666) = 12
...
write(12, "<?xml version=\"1.0\"encoding=\"UT"..., 626688) = 626688

And many others...

Now that I know what I'm looking for, it seems I'm not the only one
with this problem: https://bbs.archlinux.org/viewtopic.php?id=137697

Looks like a bug (or feature?) on GTKs end...so sorry to bother you.

On Mon, 3 Sep 2012 22:50:26 +0200
"Robert 'Bobby' Zenz" <[email protected]> wrote:

> Thanks for the hints so far.
> 
> I'm at the moment trying to narrow this down with inotifywatch...there
> is definitely something fishy going...but can't tell if is Sawfish or
> GTK, see (attached) inotifywatch_local. That does not explain the disk
> IO, but accessing that directory for 1k times during only a few
> seconds of running?
> 
> I also tried with a new user, there was still disk-IO, but only a 10th
> of it, around 50kb/sec. If I execute "inotifywatch -rv ." in the new
> users home (which I can still do there, as I have too much in my own)
> it shows still heavy access to (the empty) .local/share (around 400
> times). I'm not sure if that tells you anything, though.
> 
> Does anyone else see this, by the way? Because if not, I assume that
> it is my setup in some way.
> 
> Thanks for sticking with me so far.
> 
> P.S.: "gzip it"...dude, now I feel dumb...
> 
> On Wed, 29 Aug 2012 10:06:53 +0200
> Michal Maruska <[email protected]> wrote:
> 
> > On Wed, Aug 29, 2012 at 12:33 AM, GSR - FR
> > <[email protected]> wrote: .....
> > > There are thousands of 'read'. The one that appears a lot uses fd
> > > 10, 'grep "read(10" strace_output | wc -l' gives 116465, the file
> > > has 261125 lines.
> > >
> > > Looking up what has generated a 10 gives some 'open's (that are
> > > closed quickly) and 'inotify_init1'. Those read calls have
> > > '\x73\x74\x72\x61\x63\x65\x5f\x6f\x75\x74\x70\x75\x74' which is
> > > the string 'strace_output'.
> > >
> > > My take is something is looking for changed files (check the
> > > 'inotify_add_watch' calls), and you are changing a file just where
> > > that thing is looking at.
> > >
> > > Could you try making redirections to /tmp/strace_output and check
> > > again? Maybe something (gtk inner guts?) is causing part of the IO
> > > noise.
> > 
> > So for some reason  this  sawfish-config opens an inotify on your
> > home directory (and/home/robert/.local/share) .
> > Maybe it should not, or is it some Gtk internal thing?
> > 
> > So, similar to
> >     inoticoming --foreground  .  echo {} \;
> > 
> > When you do as GSR suggested (diverting the strace output out of
> > those 2 directories),
> > you might see what is touching files in those directories.
> > 
> 


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