jmeter-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Vance Zhao <>
Subject RE: JMeter 2.5 performance
Date Fri, 02 Sep 2011 15:44:14 GMT
i'm aslo hitting the slow result when using the http sampler with
httpclient4. i found it easily eat out all the resouce with httpclient4 and
actually i got OOM in the jmeter client side. Do we forget closing the
connction in jmeter?
On Aug 31, 2011 11:44 PM, "Robin D. Wilson" <> wrote:
> Sebb asked:
>>>>How do the average elapsed times compare?
>>> The average times are about 50% longer than with 2.4 - so where I was
>>> averaging ~1000ms for the 'submit' (POST) action, it is now showing
>>> about
>>> 1500 to 1750ms. (I am mostly concerned with the 'POST' because that's
>>> where all the real work occurs on our server side.)
>>Are all the methods equally affected?
> Hard to say, I wasn't recording them in the benchmark data I keep - but in
> just looking at it, I would say yes.
>>>>Also what about min/max
>>> Those varied a lot from one run to the next anyway - just because I've
>>> always been dealing with very short durations - but I did notice that
>>> the 'max' seemed to consistently read higher than my prior benchmarks
>>> - but only by 1-2 seconds (1000-2000ms). Given the variables in the
>>> system - that doesn't seem too outrageous to me.
>>>>The http sampler code was re-organised for 2.5; additional classes
>>> added and there is another code layer,
>>>>but I'd be surprised if that had a significant effect.
>>> I wonder if that mattered - it sure appears to be making a big
>>> difference. I think I could re-work the script to use AJP (we're
>>> hitting 'tomcat' through an apache front-end right now - and our
>>> apache uses AJP), but I have no prior benchmarks to compare AJP with...
>>Not sure how that would help.
> If it were something in the HTTP Request HTTP Client sampler, it might
> a difference if I switched to a different sampler. If it is a problem that
> is global to all JMeter samplers, then it won't help at all. Just trying
> isolate the problem area.
>>I find it hard to believe that the additional code used by the samplers -
> think it's just
>>one extra level of indirection - could cause the significantly different
> results you are seeing.
>>Does the jmeter.log file show anything relevant?
> Not that I can see. Everything appears normal to me.
> --
> Robin D. Wilson
> Sr. Director of Web Development
> KingsIsle Entertainment, Inc.
> VOICE: 512-777-1861
> ---------------------------------------------------------------------
> To unsubscribe, e-mail:
> For additional commands, e-mail:

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