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From "" <>
Subject Re: ATS concurrence
Date Fri, 13 Apr 2012 07:18:44 GMT

In the past using ec2  instances on Amazon I have been able to get around the 3k requests
per second before ATS becomes unresponsive (memory/cpu/hd usage looked healthy still). The
assumption here being the that the origin servers are not congested.

Worth keeping in mind that the effective rate you can push requests through can drop significantly
further if your origin servers become slower to respond so its worth monitoring both at the
same time when you test (as well as comparing performance with physical server).


From: "" <<>>
Reply-To: "<>" <<>>
Date: Fri, 13 Apr 2012 07:23:03 +0100
To: "<>" <<>>
Cc: "<>" <<>>
Subject: Re: ATS concurrence

Yes it is!!!

Jorge Roman Novalbos<>
679 99 08 62

On 13/04/2012, at 07:00, "<>"
<<>> wrote:

Is this a virtual machine?

-------- Original Message --------
From: Jorge Román Novalbos
Sent: Thu, Apr 12, 2012 21:18
Subject: ATS concurrence

Hi everyone!!

I'm configuring a new ATS machine that it gonna server a lot request per second (around 10000).

I have done several benchmark with ab from different machine to achieve more concurrence but
I can't get more than 3000 request per second.

I have set several params in order to improve the performance:

echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle
echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse
echo "10" > /proc/sys/net/ipv4/tcp_fin_timeout

echo "10240" > /proc/sys/net/core/somaxconn

Besides, I have increased max open file allowed for nobody user to 16384 (User that run ATS)

In the client side always get the same error :

apr_socket_recv: Connection timed out (110)

This is the ab command:

ab -c 600 -t 60 ''"

I have increased the limit to 5000 in client side too.

Anybody knows how i can retrieve more concurrence in my server??????

Thanks in advance!!!


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