[Click] SimpleQueue Performance issue

[remi.clavier at orange-ftgroup.com]

It's a bug of Simple Queue in userlevel? It's is identified and a fix expected?
 
It's a work aroud other tha kernel level use?
 
I can't use kernel level at this time...
 
Thanks for all
 
Rémi
 

________________________________

De : Yongheng Qi [mailto:jetever at gmail.com] 
Envoyé : mercredi 9 décembre 2009 10:12
À : CLAVIER Remi RD-CORE-LAN
Objet : Re: [Click] SimpleQueue Performance issue


I used Queue on userlevel, have the same problem. but use it in kernel level, no problem.

by the way, I find in kernellevel, Queue and NotifiyQueue have the same proformance.



2009/12/9 <remi.clavier at orange-ftgroup.com>


	userlevel
	 
	Thanks
	 

________________________________

	De : Yongheng Qi [mailto:jetever at gmail.com] 
	Envoyé : mercredi 9 décembre 2009 09:59
	À : CLAVIER Remi RD-CORE-LAN
	Cc : click at pdos.csail.mit.edu
	Objet : Re: [Click] SimpleQueue Performance issue
	
	
	userlevel or kernelmod?
	
	
	2009/12/9 <remi.clavier at orange-ftgroup.com>
	


		I have not anderstant exactly how Simple Queue works.
		For a specific use, I patch SimpleQueue to add an annotation when the
		length is greather tha a given value using the packet->uniqueify()
		function to have a new packet to annotate .When the ModifiedQueue is
		empty, nothing special happends.
		
		But when the Queue contains Packets, the CPU usage grows very quickly
		and go to 100% when the numbre of packets in the queue becomes higher;
		When the Queue becomes empty, the CPU usage decrease slowly to a normal
		value
		
		I's a normal behavior for a Simple Queue or is this problem related to
		my patch?
		
		
		I use click 1.7 with multithread option.
		
		Help will be welcome
		
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	-- 
	Yongheng Qi  
	
	Mobile: +86 1390 119 7481
	




-- 
Yongheng Qi  

Mobile: +86 1390 119 7481