logging-log4j-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Vogtländer, Arend (bos)" ...@bos-bremen.de>
Subject strange behaviour of log4j
Date Fri, 06 Mar 2009 13:40:44 GMT
Dear Sir or Madam,

we have monitored a quite strage effect in log4j logfiles, which are
produced on a JBoss applicationserver of one of our customers.

I tried to google about it, but couldn´t find any hint, that somebody ever
had the same problem, this is why i come to ask you about it.

the effect ist as follows: 

the logfiles start with a line of nullvalues (0x00). this line is sometimes
a large ammounts of screenpages long. 

It seems that there ist a nullvalue pushed to the beginning of the logfile
every some time.

E.g. today we had a logifle with a size of ~50MB content.

anyway there were only 69 Lines of entries, and a preceeding line with
50663124 "00" - Bytes.

We got the file zipped, and i would say, it has a phenomenal
compressionrate: the original size is 50.674.628 Bytes and compressed it has
50.478 Bytes. That comes to a Factor of ~1000, wow ;-)

Anyway, as we have no other customer, who has a similar problem, and there
seems to be nobody else having such a problem, I´d be very happy for a short
estimation, where I could have a look to find a cause for the effect.

The OS is a SuSE10, Applicationserver is JBoss 4.2.2, and the Log4j Version
is: 1.2.14 I´ll try to get the log4j.xml to check their Appenders, but maybe
this description already rings a bell for you?


with best regards

Arend Vogtländer

IT Services


bos | bremen online services GmbH & Co. KG Am Fallturm 9

D- 28359 Bremen

www.bos-bremen.de <outbind://46/www.bos-bremen.de> 

Telefon: +49 421 20495 - 58

Telefax: +49 421 20495 - 11

E-Mail: wartung@bos-bremen.de


bremen online services

Entwicklungs- und Betriebsgesellschaft mbH & Co. KG Aufsichtsratsvorsitzende
Gisela Schwellach Amtsgericht Bremen HRA 22041 

Persönlich haftender Gesellschafter: 

bremen online services Beteiligungsgesellschaft mbH

Geschäftsführer: Dr. Stephan Klein

Amtsgericht Bremen HRB 18756

  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message