Memory leak, high memory usage or high GC churn?
The StreamProcessor shouldn't be a GC root. Either something should be
retaining a reference to it or it should be eligible for GC.
There isn't much in the way of HTTP/2 specific leaks that have been fixed.
For HTTP/2, I'd expect you to see much more impact from the changes
around 9.0.37 / 9.0.39 that reduced the footprint of closed HTTP/2 streams.
Mark
On 08/07/2021 19:32, Mark A. Claassen wrote:
Sorry, realized I had a mistyped subject.
-----Original Message-----
From: Mark A. Claassen <mclaas...@ocie.net>
Sent: Thursday, July 8, 2021 2:30 PM
To: Tomcat Users List <users@tomcat.apache.org>
Subject: Http/s Memory Leak
Importance: Low
We are using 9.0.12 on a server and noticed a pretty big memory leak. The
change log mentions a some fixed leaks in the releases since 9.0.12.
I was wondering if this leak was fixed already.
The leak is that there are over 80,000 instances of
org.apache.tomcat.util.buf.MessageBytes. Below is the reference path.
Is this one of the things fixed by setting useAsyncIO="false"? Is there a
downside to using this?
(We are using Http11AprProtocol and OpenSSL)
Thanks,
Mark
Reference path of the leak:
MessageBytes
MimeHeaderField
MimeHeaderField[]
MimeHeaders
Response
Stream
ConcurrentHashMap$Node
ConcurrentHashMap$Node
ConcurrentHashMap$Node[]
Http2UpgradeHandler
StreamProcessor (Root)
Mark Claassen
Senior Software Engineer
Donnell Systems, Inc.
130 South Main Street
Leighton Plaza Suite 375
South Bend, IN 46601
E-mail: mailto:mclaas...@ocie.net
Voice: (574)232-3784
Fax: (574)232-4014
Disclaimer:
The opinions provided herein do not necessarily state or reflect those of
Donnell Systems, Inc.(DSI). DSI makes no warranty for and assumes no legal
liability or responsibility for the posting.
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