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From Samisa Abeysinghe <samisa.abeysin...@gmail.com>
Subject Re: [AXIS2] MTOM performance Measuring
Date Wed, 10 May 2006 00:26:01 GMT
Well, from this I am certain that we should not change the buffer size 
to 1024*1024, rather keep it at 1024.
Please try with stat, using a dynamic buffer size based on the file 
size, my gut feel is that it is going to be the best solution.

Thanks,
Samisa...

Kapila Dissanayake wrote:

>  
> Hi,
>  
> I did some testing agian with to measure the binary file transfer 
> times. In axis2 c data_handler.c, different buffer sizes (1024 and 
> 1024*1024) were used to read files.
>  
> I think using fixed size buffers to read binary files in axis2-C has 
> been affected in some cases to slow down the transfer.
>  
> Thanks
>  
> Kapila
>  
> Please see the following test results
>  
> Environment 	
> 	
> 	
> 	
> 	
> 	
> 	
> ---------- 	
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> Processor - Intel Celeron M 1.40GHz 	
> 	
> 	
> 	
> 	
> RAM - 256 MB 	
> 	
> 	
> 	
> 	
> 	
> 	
> OS - Fedora Core 4. 	
> 	
> 	
> 	
> 	
> 	
> 	
> Java Server - axis2 Java 	
> 	
> 	
> 	
> 	
> 	
> C Server - axis2 	
> 	
> 	
> 	
> 	
> 	
> 	
> mtom C and java test clients were used 	
>
>  
>
> Time Taken in milli seconds
>
> 	
> 	
> 	
> 	
> 	
> 	
>
>
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> File Size (kb) 	  	Java Server 	(ms) 	Java Server 	(ms) 	  	 C 
> Server 	(ms) 	  	C Server 	(ms)
>   	  	Java Client 	(ms) 	C Client 	(ms) 	  	 C Client 	(ms) 	  	 Java 
> Client 	(ms)
>   	  	  	  	  	  	*Buffer Size* 	*1024 * 	*1024 X 1024* 	* * 	*1024* 
> *1024 X 1024 *
> ----------------- 	----------------- 	----------------- 
> ----------------- 	----------------- 	----------------- 
> ----------------- 	----------------- 	----------------- 
> ----------------- 	----------------- 	-----------------
> 13.8 	  	147 	  	158 	  	  	73 	1884 	  	188 	143
> 28.2 	  	515 	  	488 	  	  	78 	1912 	  	222 	413
> 37.8 	  	538 	  	694 	  	  	131 	1917 	  	232 	474
> 132 	  	571 	  	807 	  	  	212 	2177 	  	263 	420
> 154 	  	547 	  	672 	  	  	239 	2215 	  	347 	389
> 165 	  	688 	  	683 	  	  	397 	2380 	  	364 	400
> 561 	  	1340 	  	1024 	  	  	995 	2537 	  	637 	899
> 762 	  	1766 	  	1336 	  	  	1903 	2890 	  	1248 	1218
> 1162 	  	3464 	  	1970 	  	  	4859 	3602 	  	1702 	1718
> 1761 	  	4666 	  	3274 	  	  	10928 	8028 	  	2780 	3249
> 2081 	  	6777 	  	2993 	  	  	15066 	11008 	  	3595 	3281
> 4241 	  	23038 	  	Could not transfer (Java client Broken) 	  	  
> 52853 	33351 	  	16234 	115777
>
>
>
>  
> On 5/8/06, *Samisa Abeysinghe* <samisa@wso2.com 
> <mailto:samisa@wso2.com>> wrote:
>
>     Hmmm, Interesting. There seem to be a problem in C client in case of
>     large attachments.
>     This must be due to the fact that we are using a loop to read the
>     file.
>     If we stat and read the file at once, there could be an improvement.
>
>     Why is it so slow, in C vs C case? (Third column) This is worth
>     investigating.
>
>     Thanks,
>     Samisa...
>
>     Kapila Dissanayake wrote:
>
>     > Hi,
>     >
>     > I did some testing on binary attachment transfer times, with axis2
>     > 'java' and 'C' servers with sample mtom clients. It took very high
>     > transfer times for large size attachments. Some minor modificaions
>     > were done to the data_handler.c and it was sent to the mailing list.
>     >
>     >
>     > (File Size) vs (Time Taken in milli seconds) to transfer binary
>     > attachments
>     >
>     > Environment
>     > ----------
>     > Processor - Intel Celeron M 1.40GHz
>     > RAM - 256 MB
>     > OS - Fedora Core 4.
>     > Java Server - axis2 Java
>     > C Server - axis2
>     > mtom C and java test clients were used
>     > Time Taken in milli seconds
>     >
>     > File Size (kb)
>     >
>     > Java Server
>     >
>     > (ms)
>     >
>     > Java Server
>     >
>     > (ms)
>     >
>     >  C Server
>     >
>     > (ms)
>     >
>     > C Server
>     >
>     > (ms)
>     >
>     >
>     >
>     >
>     > Java Client
>     >
>     > (ms)
>     >
>     > C Client
>     >
>     > (ms)
>     >
>     >  C Client
>     >
>     > (ms)
>     >
>     >  Java Client
>     >
>     > (ms)
>     > ---------------
>     >
>     > ---------------
>     >
>     > ---------------
>     >
>     > ---------------
>     >
>     > ---------------
>     >
>     > ---------------
>     >
>     > ---------------
>     >
>     > ---------------
>     >
>     > ---------------
>     > 28
>     >
>     >
>     >
>     > 445
>     >
>     >
>     >
>     > 274
>     >
>     >
>     >
>     > 2004
>     >
>     >
>     >
>     > 1009
>     >
>     >
>     > 38
>     >
>     >
>     >
>     > 617
>     >
>     >
>     >
>     > 297
>     >
>     >
>     >
>     > 1957
>     >
>     >
>     >
>     > 842
>     >
>     >
>     > 132
>     >
>     >
>     >
>     > 593
>     >
>     >
>     >
>     > 527
>     >
>     >
>     >
>     > 2181
>     >
>     >
>     >
>     > 726
>     >
>     >
>     > 154
>     >
>     >
>     >
>     > 551
>     >
>     >
>     >
>     > 447
>     >
>     >
>     >
>     > 2081
>     >
>     >
>     >
>     > 677
>     >
>     >
>     > 165
>     >
>     >
>     >
>     > 440
>     >
>     >
>     >
>     > 743
>     >
>     >
>     >
>     > 2147
>     >
>     >
>     >
>     > 676
>     >
>     >
>     > 561
>     >
>     >
>     >
>     > 1029
>     >
>     >
>     >
>     > 418
>     >
>     >
>     >
>     > 2581
>     >
>     >
>     >
>     > 1075
>     >
>     >
>     > 762
>     >
>     >
>     >
>     > 2137
>     >
>     >
>     >
>     > 1572
>     >
>     >
>     >
>     > 3231
>     >
>     >
>     >
>     > 2356
>     >
>     >
>     > 1162
>     >
>     >
>     >
>     > 3172
>     >
>     >
>     >
>     > 2962
>     >
>     >
>     >
>     > 3981
>     >
>     >
>     >
>     > 3100
>     >
>     >
>     > 1761
>     >
>     >
>     >
>     > 7672
>     >
>     >
>     >
>     > 5494
>     >
>     >
>     >
>     > 8186
>     >
>     >
>     >
>     > 3041
>     >
>     >
>     > 2081
>     >
>     >
>     >
>     > 7768
>     >
>     >
>     >
>     > 6837
>     >
>     >
>     >
>     > 11757
>     >
>     >
>     >
>     > 3499
>     >
>     >
>     > 4241
>     >
>     >
>     >
>     > 14465
>     >
>     >
>     >
>     > 24060
>     >
>     >
>     >
>     > 36168
>     >
>     >
>     >
>     > Could not transfer (Error Occured in Java client)
>     >
>     >
>     >
>     >
>     > Thank You
>     >
>     > Kapila
>
>
>


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