On 10/30/18 05:01 PM, Udo Grabowski (IMK) wrote:
On 30/10/2018 16:46, Predrag Zečević - Technical Support Analyst wrote:
On 10/30/18 16:28, Bob Friesenhahn wrote:
On Tue, 30 Oct 2018, Udo Grabowski (IMK) wrote:
P.S: During this e-mail writing, number of file grew further:
$ find /var/cache/fontconfig/ -type f | wc -l
526905
man fam:
...
DESCRIPTION
FAM, the File Alteration Monitor, is a subsystem that
applications can
use to be notified when specific files or directories are
changed. It
is intended as a replacement for mechanisms such as poll and
select.
....
So indeed that potentially can have something to do with your
problem if the process polluting your cache wants the FAM service
and doesn't get it and then falls back to something insane.
Recent illumos has added Linux compatibility functions to support LX
Zone
functionality and these compatibility functions might be picked up
and used by
accident by software which targets Linux. I don't know if there is an
emulation of inotify(7) but it seems like something important to
emulate for
LX Zones.
Regardless, the Dtrace Toolkit provides scripts (opensnoop and
iosnoop) which
allows observing all I/O activity on the system and so it should quickly
reveal the offender.
Bob
Hi,
no idea how I have missed opensnoop (probably because iosnoop I have
tried was
useless):
$ /opt/DTT/Bin/iosnoop
UID PID D BLOCK SIZE COMM PATHNAME
...
0 381 W 275526024 32768 zpool-pz512 <none>
0 381 W 283297216 32768 zpool-pz512 <none>
2903 28881 R 256458773 7168 thunderbird <none>
2903 28881 R 256795291 6656 thunderbird <none>
0 381 W 322684424 4096 zpool-pz512 <none>
BUT, opensnoop showed guilty processes: firefox and thunderbird (which
explains
no data increase, when logged off): Example
2903 28883 firefox 53
/var/cache/fontconfig/d937d800-0615-4b33-a228-a4e53ca4493d-le32d4.cache-7
2903 28883 firefox 53
...
Any suggestion?
This one ?
<https://bugzilla.mozilla.org/show_bug.cgi?id=1411338>
Predrag, considering the last comment in the Mozilla bug above (claiming
the bug went away when updating fontconfig), would you care applying
patches [1] newer than 2.13.1 release on top of userland fontconfig
component, build it and testing? At lease some of them look to be
related to your problem.
Michal
[1] https://cgit.freedesktop.org/fontconfig/log/
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