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From "Meeusen, Christopher W." <Meeusen.Christop...@mayo.edu>
Subject RE: Axis2 POJO SOAP Web Services performance under load
Date Tue, 02 Jun 2015 19:34:40 GMT
I would instrument your JVM.  Use a tool like Wiley Introscope and see where the code is spending
the most time executing.  

-----Original Message-----
From: Kris [mailto:krisg_mcd@yahoo.com.INVALID] 
Sent: Tuesday, June 02, 2015 2:19 PM
To: java-user@axis.apache.org
Subject: Axis2 POJO SOAP Web Services performance under load

Hello,

I have been trying to figure out the bottleneck in Axis2 that has been causing slow response
times for my web service under load. Following are the details about misstep,

We have deployed POJO SOAP web services using Axis2 on Tomcat 6.0 running on 1.7.0_21. The
instance has plenty of memory and CPU available. Here is what we notice,

we have an API that would return about 400K worth of static data (static for the purposes
of load testing), and I have a test client that I can run in command line with some parameter
that would invoke this API and returns response in about 200-500 ms.  However when I also
run JMeter with 20 requests/sec, the response times shoot up to 3-5 seconds and I can’t
seem to figure out why. There is plenty of memory and CPU, and the JMeter is running on a
completely different PC than my command line application, but the command line application
all of a sudden starts showing high response times as you can see below,

(Response time is 5th column)
						
2015-06-02 12:31:01,216	0	2015-06-02 12:30:52,307	2015-06-02 12:31:01,215	8908	36
2015-06-02 12:31:03,870	1	2015-06-02 12:31:03,216	2015-06-02 12:31:03,870	654	36
2015-06-02 12:31:06,412	2	2015-06-02 12:31:05,874	2015-06-02 12:31:06,412	538	36
2015-06-02 12:31:08,706	3	2015-06-02 12:31:08,413	2015-06-02 12:31:08,706	293	36
2015-06-02 12:31:11,137	4	2015-06-02 12:31:10,707	2015-06-02 12:31:11,137	430	36
2015-06-02 12:31:13,481	5	2015-06-02 12:31:13,138	2015-06-02 12:31:13,481	343	36
2015-06-02 12:31:15,751	6	2015-06-02 12:31:15,482	2015-06-02 12:31:15,751	269	36
2015-06-02 12:31:18,007	7	2015-06-02 12:31:17,752	2015-06-02 12:31:18,007	255	36
2015-06-02 12:31:20,394	8	2015-06-02 12:31:20,008	2015-06-02 12:31:20,394	386	36
2015-06-02 12:31:22,652	9	2015-06-02 12:31:22,395	2015-06-02 12:31:22,651	256	36
2015-06-02 12:31:24,978	10	2015-06-02 12:31:24,652	2015-06-02 12:31:24,978	326	36
2015-06-02 12:31:27,197	11	2015-06-02 12:31:26,979	2015-06-02 12:31:27,197	218	36
2015-06-02 12:31:29,492	12	2015-06-02 12:31:29,198	2015-06-02 12:31:29,491	293	36
2015-06-02 12:31:31,793	13	2015-06-02 12:31:31,492	2015-06-02 12:31:31,793	301	36
2015-06-02 12:31:34,201	14	2015-06-02 12:31:33,797	2015-06-02 12:31:34,200	403	36
2015-06-02 12:31:36,613	15	2015-06-02 12:31:36,201	2015-06-02 12:31:36,613	412	36
2015-06-02 12:31:38,985	16	2015-06-02 12:31:38,613	2015-06-02 12:31:38,985	372	36
2015-06-02 12:31:46,273	17	2015-06-02 12:31:40,986	2015-06-02 12:31:46,273	5287	36
2015-06-02 12:31:52,985	18	2015-06-02 12:31:48,279	2015-06-02 12:31:52,985	4706	36
2015-06-02 12:31:59,411	19	2015-06-02 12:31:54,986	2015-06-02 12:31:59,411	4425	36
2015-06-02 12:32:04,024	20	2015-06-02 12:32:01,412	2015-06-02 12:32:04,024	2612	36
2015-06-02 12:32:08,579	21	2015-06-02 12:32:06,025	2015-06-02 12:32:08,579	2554	36
2015-06-02 12:32:12,383	22	2015-06-02 12:32:10,580	2015-06-02 12:32:12,357	1777	36
2015-06-02 12:32:17,115	23	2015-06-02 12:32:14,384	2015-06-02 12:32:17,115	2731	36
2015-06-02 12:32:21,188	24	2015-06-02 12:32:19,115	2015-06-02 12:32:21,188	2073	36
2015-06-02 12:32:25,074	25	2015-06-02 12:32:23,189	2015-06-02 12:32:25,073	1884	36
2015-06-02 12:32:28,785	26	2015-06-02 12:32:27,074	2015-06-02 12:32:28,785	1711	36
2015-06-02 12:32:32,282	27	2015-06-02 12:32:30,786	2015-06-02 12:32:32,282	1496	36


I can definitely tell based on my tests that there is some kind of bottleneck somewhere and
I can’t seem to be able to figure out what to Tune to get constant response time under load.


I am using the latest and greatest version of Axis2 for java.

Any help would be greatly appreciated.

Thanks,
-Kris
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