tomcat-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: Increased memory consumption due to url encoding
Date Tue, 09 Aug 2016 16:27:59 GMT
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Lazar,

On 8/9/16 8:40 AM, Lazar Kirchev wrote:
> Hello! When handling requests which make use of request dispatcher,
> Tomcat 7.0.70 allocates more memory in comparison to 7.0.69. This
> seems to come from the encoding of the path introduced with this
> change http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/java/org/ 
> apache/catalina/core/ApplicationContext.java?r1=1741024&r2=1741023&pat
hrev=
>
> 
1741024
> 50000 requests to a very simple servlet which only gets a request 
> dispatcher for some path lead to allocation of about 400 MB.
> However, after a GC they are freed and this actually does not
> influence CPU or response time. Has anybody noticed this effect and
> what do you think about it?

What happens if you set the heap size very low (e.g. 32MiB) and run
the same test? Does the memory usage grow to 400MiB, or does the
request performance start to degrade?

I'm curious if you are just seeing the effect of the GC doing its job
correctly.

- -chris
-----BEGIN PGP SIGNATURE-----
Comment: GPGTools - http://gpgtools.org
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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=FTq+
-----END PGP SIGNATURE-----

---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org


Mime
View raw message