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From Adam Hardy <ahardy.str...@cyberspaceroad.com>
Subject Re: Configuration and performance questions
Date Tue, 20 Apr 2004 07:29:23 GMT
1. Yes of course. 4.1.30 is many release cycles ahead of 5.0.19. But 
that's a matter of course with all software.

2. Don't know.

3. I thought 'enterprise' was a marketing word ;)

4. Are you sure you've got apache configured correctly? I don't think 
there should be such a noticeable difference.

Adam

On 04/20/2004 03:07 AM Brian C. Dilley wrote:
>     We are evaluating tomcat as a replacement for JRun.  We are hoping
> that we can get some real world experiences in order to support our
> assumptions.  We have the following questions and concerns regarding
> tomcat.
> 
> 
> 1.  We are currently looking at version 5.0.19.  Is there a
> performance\stability trade off compared to version 4.1.30?
> 
> 2.  What are the advantages or disadvantages of the different mod_jk2
> worker types (ie: channelSocket, unixSocket, jni)?  And are there any
> other connectors that we may want to evaluate.
> 
> 3.  Is there any documentation, or can anyone attest to the
> performance\stability of tomcat in an enterprise environment.
> 
> 4.  We have tested apache 2.0.49 using mod_jk2 (channel socket using
> AJP13) version 2.0.4 and tomcat 5.0.19 and found that it has some
> concurrency issues.  Here are our findings, we are using siege for load
> testing:
> 
> Config: Tomcat 5.0 / java 1.4.1
> Concurrent: 100
> Time: 5M
> Transactions:                 	3712 hits
> Availability:                 	100.00 %
> Elapsed time:                 	310.18 secs
> Data transferred:          	171245696 bytes
> Response time:                  	7.80 secs
> Transaction rate:              	11.97 trans/sec
> Throughput:                	552084.94 bytes/sec
> Concurrency:                   	93.37
> Successful transactions:   	3712
> Failed transactions:             0
> 
> Test Run 2
> Config: Apache 2.0.49 / Tomcat 5.0 / mod_j2k / java 1.4.1
> Concurrent: 100
> Time: 5M
> Transactions:                   	750 hits
> Availability:                  	99.87 %
> Elapsed time:                	1078.13 secs
> Data transferred:            	6124581 bytes
> Response time:                 	27.71 secs
> Transaction rate:               	0.70 trans/sec
> Throughput:                 	5680.74 bytes/sec
> Concurrency:                   	19.27
> Successful transactions:     747
> Failed transactions:              4
> 
> Test Run 3
> Config: Apache 1.3.27 / JRUN 3.0.2.1114 / mod_jrun / java 1.4.1
> Concurrent: 100
> Time: 5M
> Transactions:                   	3791 hits
> Availability:                 	100.00 %
> Elapsed time:                 	314.09 secs
> Data transferred:           	62513590 bytes
> Response time:                  	7.34 secs
> Transaction rate:              	12.07 trans/sec
> Throughput:                	199030.83 bytes/sec
> Concurrency:                   	88.62
> Successful transactions:    3791
> Failed transactions:             0
> 
> Test Run 4
> Config: Tomcat 5.0 / java 1.4.2_04
> Transactions:                   	5176 hits
> Availability:                 	100.00 %
> Elapsed time:                 	304.94 secs
> Data transferred:          	238784408 bytes
> Response time:                  	5.64 secs
> Transaction rate:              	16.97 trans/sec
> Throughput:                	783053.75 bytes/sec
> Concurrency:                   	95.75
> Successful transactions:   	5176
> Failed transactions:             0
> 
> Test 5
> Config: Apache 2.0.49 / Tomcat 5.0 / mod_j2k / java 1.4.2_04
> Transactions:                   	701 hits
> Availability:                  	99.72 %
> Elapsed time:                 	659.95 secs
> Data transferred:            	5580926 bytes
> Response time:                 	31.29 secs
> Transaction rate:               	1.06 trans/sec
> Throughput:                  	8456.59 bytes/sec
> Concurrency:                   	33.24
> Successful transactions:   	679
> Failed transactions:           	24
> 
> 
> Test Run 6
> Config: Apache 1.3.27 / JRUN 3.0.2.1114 / mod_jrun / java 1.4.2_04
> Transactions:                   	3868 hits
> Availability:                 	100.00 %
> Elapsed time:                 	308.78 secs
> Data transferred:           	63783320 bytes
> Response time:                  	7.16 secs
> Transaction rate:              	12.53 trans/sec
> Throughput:                	206565.58 bytes/sec
> Concurrency:                   	89.68
> Successful transactions: 	3868
> Failed transactions:          	0
> 
> 
> 
> 
> 


-- 
struts 1.2 + tomcat 5.0.19 + java 1.4.2
Linux 2.4.20 Debian


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