Odhiambo WASHINGTON wrote:
Salut!
Maybe this is a FAQ: How do I calculate/enumerate the bandwidth savings
as a result of using a caching proxy (Squid in this case)?
I'd like to come up with a report on the savings that can show how Squid
is making the browsing experience better.
Thanks in advance.
-Wash
http://www.netmeister.org/news/learn2quote.html
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"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
-- Benjamin Franklin, 1759
Scalar (http://scalar.risk.az/) gives this information, in a text format
suitable for emailing. Here's an extract:
~~~ Analysis Headlines
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Log Start Time [09-05-2006 01:02:38]
Log End Time [10-05-2006 01:01:58]
Lines Analyzed 1.107M
Unique Clients: 1461
In Traffic: 14.257 GB
Out Traffic: 16.298 GB
------------------------------------
Saved Traffic: 2.040 GB 12.52 %
Calamaris looks like it fits the bill as well
(http://cord.de/tools/squid/calamaris/calamaris-2.html#16). Calamaris v3
beta looks like it's even better
(http://cord.de/tools/squid/calamaris/calamaris-3/#0).
If you don't mind a little math, you can get instant bandwidth saving
reports using squidclient, and the utilization menu option (squidclient
cache_object://localhost/utilization). Just subtract
server.http.kbytes_in from client_http.kbytes_out, and you have your
current bandwidth savings.
client_http.kbytes_out = 748.875717/sec
server.http.kbytes_in = 590.903991/sec
Savings of ~158.0 kbytes/sec on replies
client_http.kbytes_in = 74.455909/sec
server.http.kbytes_out = 62.886027/sec
Savings of ~11.6 kbytes/sec on requests
Chris
