DHR is reporting low

From: Rajesh Agrawal (raagrawa@cisco.com)
Date: Tue Feb 27 2001 - 18:51:12 MST


1. Is there any workload file available to test Reverse proxy.
   
   My setup is like this:

        [client]----[router]----(WAN)----[router]------[Server]
                                                   |
                                                 [Proxy]

2. Do i need to use ipfw command to introduce a delay, even if i am using
   WAN setup ?

3. I used Polygraph 2.4 on freebsd with poly-mix3 workload to test my cache
   engine (Cisco-507). I am getting perfect TPS performance. But, Hit Ratio
   is only 32.53 % however, offered DHR is 57.74%.

   Following errors are reported in the report file. Is there any way to
   improve DHR ?

Errors (0.01% of all transactions):

     #errno count count% explanation
         54 168 56.38 "Connection reset by peer"
        263 130 43.62 "premature end of msg body"

Potential problems:

   1.Measured document hit ratio (32.53%) differs from the offered
   DHR (57.74%) by -43.66%.
   2.Measured byte hit ratio (33.21%) differs from the offered BHR
   (59.89%) by -44.55%.
   3.Reported fill count contribution (35.67%) does not match
   `cachable miss' estimation (47.52%).
   4.Reported fill volume contribution (37.99%) does not match
   `cachable miss' estimation (50.17%).

Thanks,
Rajesh



This archive was generated by hypermail 2b29 : Tue Jul 10 2001 - 12:00:17 MDT