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Posted to dev@tomcat.apache.org by bu...@apache.org on 2020/02/27 09:10:21 UTC
[Bug 64182] New: 1.03s delay on every request via ajp
https://bz.apache.org/bugzilla/show_bug.cgi?id=64182
Bug ID: 64182
Summary: 1.03s delay on every request via ajp
Product: Tomcat 8
Version: 8.5.51
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Connectors
Assignee: dev@tomcat.apache.org
Reporter: zac.spitzer@gmail.com
Target Milestone: ----
Since upgrading to 8.5.51, there seems to be a consistent 1.03s delay on every
request.
I'm running via Apache 2.4, which doesn't support secrets until the next
release (2.4.42) https://bz.apache.org/bugzilla/show_bug.cgi?id=53098, so I
have secretRequired="false" and no secret defined due to
https://bz.apache.org/bugzilla/show_bug.cgi?id=64180
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[Bug 64182] 1.03s delay on every request via ajp
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=64182
zac spitzer <za...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
OS| |All
--- Comment #1 from zac spitzer <za...@gmail.com> ---
This is occurring with Lucee, issue was first reported here
https://dev.lucee.org/t/tomcat-cve-2020-1938-ghostcat-ajp/6650/20?u=zac_spitzer
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[Bug 64182] 1.03s delay on every request via ajp
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=64182
Mark Thomas <ma...@apache.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |WORKSFORME
Status|NEW |RESOLVED
--- Comment #3 from Mark Thomas <ma...@apache.org> ---
Tested with 8.5.51 and 8.5.x and httpd (2.4.34). Normal response times were
observed.
Looking at the (minimal) changes to the AJP request processing, I don't see how
those changes could lead to more than one second of delay.
If you'd like community help to track down what is going on, the Tomcat users
list is the place to ask. A couple of things to that might help:
- The linked report indicates the issue appeared when Tomcat was updated from
8.0.28 to 8.5.51. There are over 4 years between those releases. It would be
worth trying to narrow down which version the issue first appears in.
- The Tomcat and httpd access logs should tell you how long they each thought
the request took. It would be interesting to see if they agree that the delay
was in Tomcat.
- If Tomcat is the source of the delay, a profiler (I use YourKit because they
give OSS committers free licenses for using on their OSS projects) may provide
some insight
- If you'd like help tracking this down then providing the simplest possible
test case that demonstrates the issue makes it much easier for people to help.
If you need to include a web application in that test case, keep it as simple
as possible and include source code
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[Bug 64182] 1.03s delay on every request via ajp
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=64182
--- Comment #2 from mgrigorov <mg...@apache.org> ---
Hi Zac,
Have you tried with plain Tomcat ? Without Lucee.
If the problem is still there could you please share with us your
configurations, both Tomcat's and HTTPD's, and the steps to reproduce it.
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[Bug 64182] 1.03s delay on every request via ajp
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=64182
--- Comment #5 from Andreas <an...@gmail.com> ---
Just wanted to confirm Zac Spizters findings that adding attribute
address="::1" on server.xml host connector tag for AJP solved the delay on
Windows Server 2012 R2 (6.3) 64bit Tomcat/8.5.51
|Java|1.8.0_242 (Azul Systems, Inc.) 64bit with IIS 8.5.96.00 using boncode AJP
conncetor. The delay isn't present whit this attribute. Originally there wasn't
any address attribute set on that config tag.
Until now I couldn't reproduce the issue on my dev machine. Testing different
tomcat versions to narrow down the issue on production servers is not an option
at this moment.
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[Bug 64182] 1.03s delay on every request via ajp
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=64182
--- Comment #4 from zac spitzer <za...@gmail.com> ---
Ah, I think it might be an ipv4 vs ipv6 resolving issue.
I had address"=127.0.0.1", I changed that to address="::f" and the delay went
away
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