On 21 September 2011 22:29, Milamber <milam...@apache.org> wrote: > Hello, > > Sorry, but the problem don't seems resolve. > > Today, I try a load test on a Content Delivery Network (CDN) with HC3.1 > vs HC4 with last JMeter trunk (r1173449). > > My script : > Test only static resources (gif, png, jpeg) with direct HTTP Request > 100 users > Ramp up : 100 secs > Duration test : 300 secs (5min) > Each iteration execute 39 HTTP requests > HTTP requests : Keep Alive true > > > I have 2 issues (on 8 same tests: 4 HC3.1 and 4 HC4.1) : > > *_Issue 1_* > With HC 3.1 : always no error > With HC 4.1 : always some errors at the beginning of load test > > Stack trace (on view result tree: response data) is : > org.apache.http.NoHttpResponseException: The target server failed to respond > at > org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:101) > at > org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:252) > at > org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:281) > at > org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:247) > at > org.apache.http.impl.conn.AbstractClientConnAdapter.receiveResponseHeader(AbstractClientConnAdapter.java:219) > at > org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:298) > at > org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125) > at > org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:645) > at > org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:464) > at > org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820) > at > org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754) > at > org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sample(HTTPHC4Impl.java:265) > at > org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:62) > at > org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1010) > at > org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:996) > at > org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:383) > at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:276) > at java.lang.Thread.run(Thread.java:722) > > > HC 4 Summariser (begin) : > summary + 55 in 2,2s = 24,9/s Avg: 71 Min: 15 Max: 1677 > Err: 0 (0,00%) > summary + 5027 in 30,0s = 167,5/s Avg: 103 Min: 1 Max: 1816 > Err: 14 (0,28%) > summary = 5082 in 32,2s = 157,8/s Avg: 103 Min: 1 Max: 1816 > Err: 14 (0,28%) > summary + 5013 in 31,4s = 159,7/s Avg: 283 Min: 2 Max: 3500 > Err: 11 (0,22%) > summary = 10095 in 62,2s = 162,3/s Avg: 192 Min: 1 Max: 3500 > Err: 25 (0,25%) > summary + 5075 in 31,6s = 160,7/s Avg: 449 Min: 37 Max: 7999 > Err: 0 (0,00%) > summary = 15170 in 92,2s = 164,5/s Avg: 278 Min: 1 Max: 7999 > Err: 25 (0,16%) > summary + 4984 in 34,8s = 143,2/s Avg: 587 Min: 40 Max: 11028 > Err: 0 (0,00%) > summary = 20154 in 122,2s = 164,9/s Avg: 355 Min: 1 Max: 11028 > Err: 25 (0,12%) > */_ > Issue 2 :_/* > > With HC3.1 after ramp up: > netstat -tplna|grep java|grep ESTA|wc -l > 100 > > With HC4.1 at beginning and after ramp up : > netstat -tplna| grep java | grep ESTA | wc -l > 1145 (value change between ~1000-1150) > > I make a tcp dump and analyze with wireshark. > With HC3.1 : 0-42 secs : 43 TCP conversations (inside several HTTP GET > and response) > With HC4.1 : 0-44 secs : 3011 TCP conversations (inside one HTTP GET and > one response)
Do you mean that each HC4.1 conversation only contains a single request/response? Can you enable debug logging for HTTPHC4Impl ? This should show if the clients are being reused or not. I suggest you reduce thread and loop counts, or the log file will be very big. [I think we need to fix this before releasing 2.5.1] > HTTP conversations show Keep-Alive header (HC3 and HC4) > > I suppose that is a close keep alive connection problem with JMeter. > Perhaps 2 issues are linked? Dunno yet. > Milamber > > > Le 24/08/2011 11:40, sebb a ecrit : >> On 24 August 2011 02:43, sebb <seb...@gmail.com> wrote: >> >>> Looks like HTTPHC4Impl is not reusing HttpClient instances. >>> >>> It should only create one per thread per unique URL + some other fields. >>> >>> It seems not to be finding the previously created instances, so it >>> creates a new one for every sample. >>> Not sure why yet; probably something simple. >>> >> Very simple. >> >> The equals() method was returning false if the other object was the >> correct type, instead of returning false for the incorrect type. >> So the hash keys never matched. >> >> Nightly builds from r1160957 will have the fix. >> >> >>> However the code does at least seem to be closing the connections at >>> end of thread. >>> >>> On 23 August 2011 17:13, Milamber <milam...@apache.org> wrote: >>> >>>> [snip] >>>> >>>>>> I believe is a HTTPClient issue, on close connection? >>>>>> (http://www.sunmanagers.org/pipermail/summaries/2006-January/007068.html) >>>>>> >>>>>> >>>>> I think it's more likely to be that JMeter is not tidying up the HC4 >>>>> connections properly. >>>>> >>>>> Are you using Keep-Alive? >>>>> >>>>> >>>> Yes. >>>> >>>> >>>>> Can you reproduce the problem with a simpler test case, e.g. one that >>>>> could be run against a local server. >>>>> >>>>> >>>> Yes on my laptop (Debian 6 / 64 bits / openjdk 1.6u18) >>>> >>>> in attachment JMeter testcase. >>>> >>>> With HC4 impl: >>>> summary = 2590 in 72.4s = 35.8/s Avg: 994 Min: 487 Max: 4806 >>>> Err: 0 (0.00%) >>>> >>>> Stats at ~ 72secs : >>>> netstat -tuplna|grep java |wc -l; >>>> 1494 >>>> netstat -tuplna|grep java|grep ESTA|wc -l; >>>> 167 >>>> netstat -tplnau|grep java|grep CLOSE_WAIT|wc -l; >>>> 1337 >>>> >>>> >>>> With HC3 impl: >>>> summary = 4498 in 83.2s = 54.1/s Avg: 448 Min: 246 Max: 2489 >>>> Err: 0 (0.00%) >>>> >>>> Stats at ~83 secs: >>>> netstat -tuplna|grep java |wc -l; >>>> 61 >>>> netstat -tuplna|grep java|grep ESTA|wc -l; >>>> 60 >>>> netstat -tplnau|grep java|grep CLOSE_WAIT|wc -l; >>>> 0 >>>> >>>> NB: more requests in same time with HC3. >>>> NB2: HC3 ESTABLISHED connections is lesser than HC4 (60 users in JMeter >>>> scripts) >>>> >>>> >>>> Milamber >>>> >>>> >>> >> > > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@jakarta.apache.org For additional commands, e-mail: dev-h...@jakarta.apache.org
