Re: Good and bad news

[Philipp Chudinov <mo...@basko.ru>]

some developers reports a memory leak in Xalan (your description looks
similar). maybe that is the problem. if you are interested, i can try to
translate those thread (its in russian).

----- Original Message -----
From: "Anders Conrad" <ac...@dsl.dk>
To: <xi...@xml.apache.org>
Sent: Tuesday, March 26, 2002 7:13 PM
Subject: Good and bad news


> Hi!
>
> Some good and bad news regarding 1.0 final.
>
> The good news is that the index fix really seems to have helped: now the
> indexes remain available in spite of violent shutdowns. Thanks for that.
>
> The bad news is that a constant flow of queries to the server seems to
slow
> it down and eventually stop responding completely. I have made a shell
> script looping over about 3000 xml files. For each file a java program is
> invoked, making two lookups in Xindice and performing an XSL transform on
> the document. For the first hour, speed is about 16 docs per minute (not
> fast, but I know my construct is not optimal). After about an hour the
> performance starts degrading, coming to a complete stop after about 1 1/2
> hours. No error messages.
>
> If I restart the Xindice server, without interrupting the batch job, it
> resumes speed again! So it would seem, that some resources within the
server
> are being blocked under constant pressure.
>
> I will probably be able to optimise my program and get it to work, but the
> issue might be interesting to solve anyways.
>
> Using: Suse linux 7.3, Xalan, Sun java 1.3.1.
>
> Anders
>
> Anders Conrad, cand.mag.
> Det Danske Sprog- og Litteraturselskab
> Christians Brygge 1, 1.
> 1219 KЬbenhavn K
> Tlf. 33 13 06 60, fax: 33 14 06 08, e-post: ac@dsl.dk
>

Re: Good and bad news

[Anders Conrad <ac...@dsl.dk>]

In any case, it is the Xindice server that slows down. Xalan, on the client
side, is started in a new instance of JVM for each document so that should
not be the problem. Whether the xindice server uses Xalan for processing
queries, I don't know.

Thanks for your offer of translation, I don't think that is needed at this
point.

Anders

----- Original Message -----
From: "Philipp Chudinov" <mo...@basko.ru>
To: <xi...@xml.apache.org>
Sent: Tuesday, March 26, 2002 3:06 PM
Subject: Re: Good and bad news


> some developers reports a memory leak in Xalan (your description looks
> similar). maybe that is the problem. if you are interested, i can try to
> translate those thread (its in russian).
>
> ----- Original Message -----
> From: "Anders Conrad" <ac...@dsl.dk>
> To: <xi...@xml.apache.org>
> Sent: Tuesday, March 26, 2002 7:13 PM
> Subject: Good and bad news
>
>
> > Hi!
> >
> > Some good and bad news regarding 1.0 final.
> >
> > The good news is that the index fix really seems to have helped: now the
> > indexes remain available in spite of violent shutdowns. Thanks for that.
> >
> > The bad news is that a constant flow of queries to the server seems to
> slow
> > it down and eventually stop responding completely. I have made a shell
> > script looping over about 3000 xml files. For each file a java program
is
> > invoked, making two lookups in Xindice and performing an XSL transform
on
> > the document. For the first hour, speed is about 16 docs per minute (not
> > fast, but I know my construct is not optimal). After about an hour the
> > performance starts degrading, coming to a complete stop after about 1
1/2
> > hours. No error messages.
> >
> > If I restart the Xindice server, without interrupting the batch job, it
> > resumes speed again! So it would seem, that some resources within the
> server
> > are being blocked under constant pressure.
> >
> > I will probably be able to optimise my program and get it to work, but
the
> > issue might be interesting to solve anyways.
> >
> > Using: Suse linux 7.3, Xalan, Sun java 1.3.1.
> >
> > Anders
> >
> > Anders Conrad, cand.mag.
> > Det Danske Sprog- og Litteraturselskab
> > Christians Brygge 1, 1.
> > 1219 KЬbenhavn K
> > Tlf. 33 13 06 60, fax: 33 14 06 08, e-post: ac@dsl.dk
> >
>