Re: Not ramping up IP addresses correctly when TCP connections remain open

[Robert I. <cor...@gm...>]

Hi Aron,

On Tue, Feb 24, 2009 at 9:56 PM, Bellorado, Aron <abe...@ve...>wrote:

>  I am using curl-loader 0.47 against an Apache web server running HTTP
> 1.1.  With the Apache web server “KeepAlive” config parameter set to OFF,
> curl-loader properly ramp ups the number of clients based on the specific
> batch file parameters as expected with the Apache web server closing every
> connection after each transaction is made.  The attached capture file
> “withKeepAliveOff.cap” shows this proper behavior using the curl-loader
> batch file shown below.
>
> When Apache was configured with “KeepAlive” set to ON, the web server does
> not close the TCP connection after a transaction is complete leaving the
> connection open for the client for subsequent transactions.  When
> curl-loader was run an Apache web server with Keep Alive set to ON,
> curl-loader does not ramp up the clients correctly not incrementing IP
> address appropriately during the ramp up time.  Curl-loader appears to be
> reusing existing client IP addresses (possibly because the connections are
> still open) instead of using incremented IP addresses, although the
> curl-loader log files show the IP addresses are being incremented properly.
> The attached capture file “withKeepAliveOn.cap” shows this incorrect
> behavior using the same curl-loader batch file shown below.  Any help would
> be greatly appreciated.
>
>

This behavior is inherited from libcurl.
Try to configure the connections not to be re-used (there is a tag for
that),
but it is not necessarily will be helpful to keep KA connections with
apache.


>
>
> --
> Truly,
> Robert Iakobashvili, Ph.D.
> ......................................................................
> Assistive technology that understands you
> ......................................................................
>