Hi Shashank,

The problem might be in nginx configuration, can you please send us your
nginx.conf file?

Regards,
Nooshin

On Tue, Dec 1, 2015 at 11:56 PM, shashank shekhar <[email protected]>
wrote:

> Hi All,
>
> I have setup the web serving benchmark as defined in the installation
> guideline. I need to gather
> metrics when the frontend saturates. However, I am unable to do that. Once
> it reaches around 200-250 users, it starts to throw exceptions such as:
>
>
>    - Image at
>    http://frontend:80/fileService.php?cache=false&file=e3774t.jpg size of
>    383 bytes is too small. Image may not exist
>    - UIDriverAgent[0].146.doAddEvent: Multipart Post did not work,
>    returned status code: 504
>    - UIDriverAgent[0].125.doLogin: Found login prompt at index 1969,
>    Login as d2zg1z6jm, 5876 failed.
>
> I looked at the nginx logs and it has connection timeouts:
>
> [error] 1186#0: *3208 upstream prematurely closed connection while reading
> response header from upstream, client: X.X.X.X, server: localhost, request:
> "POST /taggedEvents.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000",
> host: "frontend"
>
> I tried increasing timeout and keepalive parameters, but it did not help.
>
> I am using variable load distribution, but even with static, the results
> are similar. The maximum CPU utilization reached was 95%.
>
> Any suggestion about what can be done is appreciated. Thanks!
>
> Regards,
> Shashank
>
>
>
>

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