httperf results with nginx and apache

[Joe Williams]

Keepalives did the trick, thanks for the advice!

Are keepalives on by default in Nginx?

-Joe


Igor Sysoev wrote:
> On Wed, Feb 27, 2008 at 05:20:08PM -0600, Joe Williams wrote:
>
>   
>> I am attempting to do a bit of a comparison between nginx and apache 
>> using httperf but my results are coming out a little strange. I am 
>> running the following against both apache and nginx:
>>
>>     
>>> httperf --timeout=5 --client=0/1 --server=DOMAIN --port=80 
>>> --uri=/robots.txt --rate=200 --send-buffer=4096 --recv-buffer=16384 
>>> --num-conns=5000 --num-calls=10
>>>       
>> The results I am seeing are the following:
>>
>> NGINX:
>>
>>     
>>> <snip>
>>> Total: connections 5000 requests 50000 replies 50000 test-duration 
>>> 25.001 s
>>> <snip>
>>> Connection rate: 200.0 conn/s (5.0 ms/conn, <=5 concurrent connections)
>>> <snip>
>>> Request rate: 2000.0 req/s (0.5 ms/req)
>>>       
>> Apache:
>>
>>     
>>> <snip>
>>> Total: connections 5000 requests 10000 replies 5000 test-duration 24.998 s
>>> <snip>
>>> Connection rate: 200.0 conn/s (5.0 ms/conn, <=1 concurrent connections)
>>> <snip>
>>> Request rate: 400.0 req/s (2.5 ms/req)
>>>       
>> Shouldn't the 'Total' numbers be the same against both web servers since 
>> I am using the same command to test them? Why is the 'requests' number a 
>> 1/5 of number that nginx responds with. Has anyone see this sort of 
>> result in the past?
>>
>> I have attempted this with a few different connection, rate and call 
>> counts and seem to get similar results with each.
>>
>> I have verified that my MaxClients and Servers setting in Apache is high 
>> enough as well.
>>     
>
> The difference is probably in keepalive settings.
> Look --num-conns=5000 and --num-calls=10 parameters.
>
>
>   

-- 
Name: Joseph A. Williams
Email: joe at joetify.com