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Subject: AW: DirectoryScanner Memory Consumption
Date: Mon, 22 Sep 2008 14:40:18 +0200
Message-ID: <9EE86F1965E19E499C80DE52AC807B55D6FD0C@z011021.bk.fin.local>
Thread-Topic: DirectoryScanner Memory Consumption
Thread-Index: Ackcr6VT9oA0FVhnRQalAvmUTRBCpwAAI1pA
References: <48D790CF.8020907@gmail.com>
From: <Jan.Materne@rzf.fin-nrw.de>
To: <dev@ant.apache.org>

I try it for you sending an email to
   dev-unsubscribe-avijayr=3Dgmail.com@ant.apache.org
as this is the form to use according to http://ant.apache.org/mail.html =
"How to unsubscribe your old email address"=20

So maybe you'll get a confirmation.


Jan

> -----Urspr=FCngliche Nachricht-----
> Von: Vijay Aravamudhan [mailto:avijayr@gmail.com]=20
> Gesendet: Montag, 22. September 2008 14:34
> An: Ant Developers List
> Betreff: Re: DirectoryScanner Memory Consumption
>=20
> hi,
> I would like to unsubscribe from this list. I have tried=20
> multiple times=20
> with the automated unsubscribe process - but it doesn't work. Please=20
> remove me from this list.
>=20
> thanks,
> Vijay
>=20
> On 09/22/2008 03:07 AM, Stefan Bodewig wrote:
> > On Fri, 19 Sep 2008, Stefan Bodewig<bodewig@apache.org>  wrote:
> >
> >   =20
> >> Something in File.getCanonicalPath seems to consume memory that
> >> isn't easily reclaimed by the GC, and I have no idea what we could
> >> do about it.
> >>     =20
> >
> > except increasing the number of times we are allowed to traverse
> > directories of the same name before we check whether they=20
> are part of
> > a symlink cycle.  svn revision 697692 bumps it to five=20
> instead of one.
> >
> > Just to show where we've come now (and I think I'll stop at this
> > point):
> >
> > small setup
> > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> >
> > matchall using pathconvert
> > --------------------------
> >
> > Ant 1.6.5        1 min 30 s  ~ 19 MB
> > Ant 1.7.0        3 min 53 s  ~ 24 MB
> > Ant 1.7.1               9 s  ~ 21 MB
> > svn rev 697073          3 s  ~ 26 MB
> > svn rev 697692          2 s  ~ 19 MB
> >
> > matchall using resourcecount
> > ----------------------------
> >
> > Ant 1.7.0        1 min 25 s  ~ 21 MB
> > Ant 1.7.1               8 s  ~ 14 MB
> > svn rev 697073          2 s  ~ 17 MB
> > svn rev 697692          2 s  ~ 16 MB
> >
> > big setup
> > =3D=3D=3D=3D=3D=3D=3D=3D=3D
> >
> > matchall using resourcecount
> > ----------------------------
> >
> > Ant 1.7.1       14 min  2 s  ~ 55 MB
> > svn rev 697073         53 s  ~ 78 MB
> > svn rev 697692         22 s  ~ 64 MB
> >
> > "small" is 10000 directories and about 22000 files spread=20
> accross four
> > levels, "big" is one level more and an order of magnitude=20
> of files and
> > dirs more.
> >
> > The numbers differ a bit from the last I've posted because I had
> > ANT_OPTS=3D-Xmx512m set last time, this time svn rev 607073 consumes
> > less memory but takes longer while I'm reasonably happy=20
> with speed and
> > memory consumption of svn rev 697692.
> >
> > Overall we've roughly gone from quadratic time to linear time when
> > scanning directories - and we even scan small directory trees faster
> > than 1.7.1.
> >
> > Stefan
> >
> >=20
> ---------------------------------------------------------------------
> > To unsubscribe, e-mail: dev-unsubscribe@ant.apache.org
> > For additional commands, e-mail: dev-help@ant.apache.org
> >
> >   =20
>=20

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