Thanks for the suggestion. I was able to get a thread dump and passed the
information onto one of our developers. It looks like he found the issue.
- locked <0x000000008ce895b8> (a java.lang.Object)
at sun.security.ssl.SSLSocketImpl.readDataRecord(Unknown Source)
at sun.security.ssl.AppInputStream.read(Unknown Source)
- locked <0x000000008ce8a338> (a sun.security.ssl.AppInputStream)
at
org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:166)
...
"AWT-EventQueue-0" #15 prio=6 os_prio=0 tid=0x0000000019fff000 nid=0x1260
waiting on condition [0x000000001b7de000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x000000008001aa50> (a
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionOb
ject)
He suggested a few things to me:
1. Try using IP addresses instead of hostnames or vice versa (this cuts down on
DNS lookups or reverse name lookups).
2. Perhaps JMeter is trying to download embedded resources within the SSL page
- perhaps try switching this off (if it isnt already) - as per this old bug
report https://bz.apache.org/bugzilla/show_bug.cgi?id=31832
3. This is related to #1. https://issues.apache.org/jira/browse/HTTPCLIENT-1302
Essentially they are saying that we should turn off hostname verification. Not
sure where that option is in Jmeter. See if you can find it.
I was going to start and look into these. I can let you know how I make out.
Thanks.
-----Original Message-----
From: Deepak Shetty [mailto:[email protected]]
Sent: Wednesday, June 08, 2016 3:36 PM
To: JMeter Users List
Subject: Re: Jmeter pausing when running
Hi
you could be having
a. Problems in the JMeter java VM
b. Problems in your test itself (like a synchronizing timer or a throughput
controller) - This is something you have probably eliminated ?
c. Problems in the system being tested (i.e. JMeter is generating the load ,
but your system under test paused so Jmeter isnt doing anything other than
waiting) - Sounds like you have eliminated this possibility
For a) you probably have no way out of looking at the java VM when it is paused
(take a thread dump - or hook up something like jconsole or run a profiler -
look at GC running , memory usage etc) and then take it from there.
Since you mentioned you are using Jmeter distributed mode , try eliminating
that first - i.e. running a single machine test (perhaps with half the
load) and seeing whether you see same behavior or not - if you do then you can
probably take a thread dump (ctrl+break or kill -3 and see what JMeter is doing
at that time - you can also enable GC logs to see what the memory usage looks
and whether GC is running or not).
On Wed, Jun 8, 2016 at 12:05 PM, Janine DeBeradinis <
[email protected]> wrote:
> Sorry, I'm not exactly sure what you mean. Run both the server and
> client in non-gui mode on the same machine?
>
> -----Original Message-----
> From: sebb [mailto:[email protected]]
> Sent: Wednesday, June 08, 2016 2:56 PM
> To: JMeter Users List
> Subject: Re: Jmeter pausing when running
>
> The JMeter GUI takes a lot more resources than running in non-Gui mode.
> Also client-server mode takes more resources as it has to send back
> the results.
>
> Since you only have two machines actually running the test, it should
> be easy enough to try running them stand-alone in non-GUI mode in parallel.
>
>
>
>
> On 8 June 2016 at 19:41, Janine DeBeradinis
> <[email protected]>
> wrote:
> > We are using 3 machines.
> >
> > 1 is running JMeter GUI to distribute the load. (also trying to see
> > if the pausing issue goes away) The other 2 are running JMeter server.
> >
> > They are all Windows Server 2012 R2 machines.
> >
> > Thanks.
> > Janine
> >
> > -----Original Message-----
> > From: Deepak Goel [mailto:[email protected]]
> > Sent: Wednesday, June 08, 2016 12:47 PM
> > To: JMeter Users List
> > Subject: Re: Jmeter pausing when running
> >
> > What machine are you running the test from? Is it a laptop or a
> > desktop
> for personal use?
> >
> > Hey
> >
> > Namaskara~Nalama~Guten Tag~Bonjour
> >
> >
> > --
> > Keigu
> >
> > Deepak
> > 73500 12833
> > www.simtree.net, [email protected]
> > [email protected]
> >
> > LinkedIn: www.linkedin.com/in/deicool
> > Skype: thumsupdeicool
> > Google talk: deicool
> > Blog:
> > https://urldefense.proofpoint.com/v2/url?u=http-3A__loveandfearless.
> > wo
> > rdpress.com&d=DQIFaQ&c=G2J7obiPomkpMVl1prtGFw&r=1OgbcP-oUjBUH-3H8avz
> > bU
> > L8Jplqf3JrZ0J8DHFWVZE&m=Q7QdXYQGe-rZwgYG-F0UQuBOUV8fVsyteZl_FEcZ5fU&
> > s= Au4_yzYoutDa59LBgoqwvraAw3A_W4bhaXyB6azgyCM&e=
> > Facebook:
> > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.facebook.com
> > _d
> > eicool&d=DQIFaQ&c=G2J7obiPomkpMVl1prtGFw&r=1OgbcP-oUjBUH-3H8avzbUL8J
> > pl
> > qf3JrZ0J8DHFWVZE&m=Q7QdXYQGe-rZwgYG-F0UQuBOUV8fVsyteZl_FEcZ5fU&s=sC3
> > 4g I9c7G5kALpTSm-Np-s7lFURlfsjH_Zh4zbnbPs&e=
> >
> > "Contribute to the world, environment and more :
> > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.gridrepublic
> > .o
> > rg&d=DQIFaQ&c=G2J7obiPomkpMVl1prtGFw&r=1OgbcP-oUjBUH-3H8avzbUL8Jplqf
> > 3J
> > rZ0J8DHFWVZE&m=Q7QdXYQGe-rZwgYG-F0UQuBOUV8fVsyteZl_FEcZ5fU&s=U_jTZpf
> > YA Z4lWmjZkzSVlkxPqhktjUtJP2vvEIInJ6s&e=
> > "
> >
> > On Wed, Jun 8, 2016 at 10:09 PM, Bob Nance
> > <[email protected]>
> > wrote:
> >
> >> I’ve been having an issue with JMeter periodically pausing when
> >> running a load test and am not sure how to resolve this. We have
> >> tried several things, but nothing seems to be working. The
> >> behavior is I start a JMeter load test. The test will run fine for
> >> a few
> minutes, then pause, then pick
> >> back up, then pause, etc. I’ve tried upping the heap size when
> starting
> >> JMeter, running in distributed mode and non distributed mode, even
> >> turning off our Anti-Virus software, but the issue still persists.
> >> The amount of load being generated isn’t that much either. My test
> >> has
> about 75
> >> different thread groups, but we are only using 1 thread per group. The
> >> last thing I tired was adding -XX:+DisableExplicitGC to jmeter.bat
> >> file, but that didn’t work either.
> >>
> >> Does anyone have any other suggestions or thoughts?
> >>
> >> Do the logs reflect the delay? (or could it just be a delayed
> >> display
> >> issue)
> >> Do you have any data visualizations/listeners running during the tests?
> >> (they can eat up a lot of CPU cycles) Do you have anything else
> >> running on the computer that might be stealing the network card?
> >> Is there a pattern that might point you somewhere (like it happens
> >> nearly at the same test, or every 12.5 seconds or something)?
> >>
> >> No direct help, but those are all things that I have seen affect my
> tests.
> >>
> >> -Bob
> >>
> >>
> >> ---
> >> Bob Nance
> >> Novation Systems
> >> [email protected]<mailto:[email protected]>
> >> 256-534-4620
> >>
> >
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