Freebsd Stable 6.x ipsec slower than with 4.9

[Stephen Clark]

Stephen Clark wrote:

>Sam Leffler wrote:
>
>  
>
>>Stephen Clark wrote:
>> 
>>
>>    
>>
>>>Mike Tancsa wrote:
>>>
>>>   
>>>
>>>      
>>>
>>>>At 01:02 PM 25/04/2006, Stephen Clark wrote:
>>>>
>>>>
>>>>
>>>>     
>>>>
>>>>        
>>>>
>>>>>>Try first
>>>>>>sysctl -w net.inet.tcp.inflight.enable=0
>>>>>>
>>>>>>If its still slower, try using FAST_IPSEC instead on the server.  
>>>>>>However, make sure you disable INET6
>>>>>>   
>>>>>>         
>>>>>>
>>>>>>            
>>>>>>
>>>>>That increased it to 39mbits/sec. Still far from 54mbits/sec
>>>>> 
>>>>>       
>>>>>
>>>>>          
>>>>>
>>>>Are all of the TCP params (compare sysctl -a net.inet.tcp on both )and 
>>>>application defaults still the same on both systems ?   One that that 
>>>>for sure is not in RELENG_4 is SACK. Try disabling that and see if 
>>>>there is a difference.
>>>>
>>>>       ---Mike
>>>>
>>>>
>>>>
>>>>     
>>>>
>>>>        
>>>>
>>>I checked the sysctl's between the two system and where the match they 
>>>are the same. The raw transfer rate ~94mbits/sec is the same as I was 
>>>getting between the systems when they were both 4.9.  The real 
>>>difference appears to be in ipsec. The other thing that is interesting 
>>>is the idle time when I am running this test on the 6.x system is about 
>>>70% when it was a 4.9 system getting 54mbits/sec the idle time was only 
>>>50-55%.
>>>
>>>I am reluctant to try fast ipsec because of problems I had when I tried 
>>>it under 4.9, it didn't work with our existing sites.
>>>   
>>>
>>>      
>>>
>>There are known locking bottlenecks in the crypto subsystem that fast 
>>ipsec depends on.  This is consistent with idle time going up.
>>
>>Not sure when they'll be fixed but I know they're important to at least 
>>one person.
>>
>>	Sam
>>_______________________________________________
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>>
>> 
>>
>>    
>>
>Hi Sam,
>
>I am going to try the fast ipsec.
>
>Regards,
>Steve
>  
>




Good news with fast ipsec I am back to 53mbits/sec.

Thanks everyone,
Steve

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