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Date:      09 Apr 2003 04:23:37 -0400
From:      Joe Marcus Clarke <marcus@marcuscom.com>
To:        Ruslan Ermilov <ru@freebsd.org>
Cc:        current@freebsd.org
Subject:   Re: fontconfig-2.1.92 considered harmful
Message-ID:  <1049876617.70192.28.camel@shumai.marcuscom.com>
In-Reply-To: <20030409080606.GE34134@sunbay.com>
References:  <20030408173003.84783.qmail@web11404.mail.yahoo.com> <1049824834.360.17.camel@gyros> <20030409075115.GB34134@sunbay.com> <20030409075943.GD34134@sunbay.com> <1049875322.70192.26.camel@shumai.marcuscom.com> <20030409080606.GE34134@sunbay.com>

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On Wed, 2003-04-09 at 04:06, Ruslan Ermilov wrote:
> On Wed, Apr 09, 2003 at 04:02:02AM -0400, Joe Marcus Clarke wrote:
> > On Wed, 2003-04-09 at 03:59, Ruslan Ermilov wrote:
> > > On Wed, Apr 09, 2003 at 10:51:15AM +0300, Ruslan Ermilov wrote:
> > > > On Tue, Apr 08, 2003 at 02:00:34PM -0400, Joe Marcus Clarke wrote:
> > > > > On Tue, 2003-04-08 at 13:30, Shizuka Kudo wrote:
> > > > > > --- Ruslan Ermilov <ru@freebsd.org> wrote:
> > > > > > > On Tue, Apr 08, 2003 at 02:46:39PM +0200, CARTER Anthony wrot=
e:
> > > > > > > > I had this bug, but now it is over...It has been fixed. Do =
a CVSUP and all=20
> > > > > > > > should now be ok.
> > > > > > > >=20
> > > > > > > No.  This is with the latest port.  Where specifically it
> > > > > > > was fixed?
> > > > > > >=20
> > > > > >=20
> > > > > > The exact cvs message is as follows. Having you tried 'fc-cache=
 -f' to rebuild font cache as root
> > > > > > in a text console and delete the fontcache in your home directo=
ry (This solved my problem when
> > > > > > starting a KDE session)?
> > > > >=20
> > > > > But Ruslan is reporting the bug in 2.1.92 which incorporates this=
 fix.=20
> > > > > Besides, what Ruslan is seeing is a different crash.  I'm wonderi=
ng if
> > > > > it is indeed an issue with not having enough memory.  All my mach=
ines
> > > > > have at least 512 MB of RAM, and I've never encountered this erro=
r.=20
> > > > > Anyone have a machine with < 200 MB of RAM and is _not_ having a =
problem
> > > > > with fontconfig?
> > > > >=20
> > > > Hmm, I initially didn't notice this, because it was a batched insta=
ll
> > > > of XFree86-4.  Now that I try to manually reinstall the port, it sa=
ys:
> > > >=20
> > > > =3D=3D=3D>   Generating temporary packing list
> > > > Running fc-cache to build fontconfig cache...
> > > > fc-cache: "/usr/X11R6/lib/X11/fonts": caching, 0 fonts, 13 dirs
> > > > fc-cache: "/usr/X11R6/lib/X11/fonts/100dpi": caching, 397 fonts, 0 =
dirs
> > > > fc-cache: "/usr/X11R6/lib/X11/fonts/75dpi": Killed
> > > > *** Error code 137
> > > >=20
> > > > Stop in /usr/ports/x11-fonts/fontconfig.
> > > >=20
> > > > Apr  9 10:46:14 lurker kernel: pid 6636 (fc-cache), uid 0, was kill=
ed: out of swap space
> > > >=20
> > > > Where do I look for a fix?
> > > >=20
> > > Okie dokie.  I've worked around this by stopping all applications.
> > > While running, this fc-cache has eaten almost all of my memory.
> > > My machine has 128M RAM and 128M swap.  It sure looks like a
> > > memory leak issue.
> >=20
> > Yeah, probably a combination of multiple memory leaks.  I tried to hunt
> > it down earlier today, but ran out of time.  The debug output should
> > help.  Thanks for the swap info.  I had a feeling systems like this
> > might be the culprit.
> >=20
> What I noticed by watching the swapinfo(8) output is that
> it never releases the memory after continuing with the next
> font directory.  Is this expected?  Does it need to preserve
> something across different font directories?  If not, this
> is a memory leak for sure.

Definitely.  The font caches are written out per directory.

>=20
> I'm willing to test the patches, should they be available.

As soon as I get your debug info, I'll be in a better position to create
patches.  The good thing about fontconfig is that it comes it a built-in
memory tracker.

Joe

>=20
>=20
> Cheers,
--=20
PGP Key : http://www.marcuscom.com/pgp.asc

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