Re: [squid-users] Bandwidth savings?
nick, you can always try to do a test without squid and compare your graphs generated by cacti. (with and without squid). this is quite common and always raises management's eyebrows but .. i guess it's part of the Layer 9 (political layer) jk!. cheers, -pf On 11/2/07, Nick Duda [EMAIL PROTECTED] wrote: What is a good utility to determine how much bandwidth in bits/sec or mb is being saved using squid. I'm using the templates for squid in Cacti and its showing some numbers that are showing a good saving and management is having a hard time believing it.
RE: [squid-users] Bandwidth savings?
Funny you bring that upbecause we did that unintensional some time back... Basically, we have 4 T1's in a brach office, bonded as a multilink (6mb). Based on this one office bandwidth going out is on average 4.5mb used with Squid in place. One day we had to make some changes and stopped serving from the cache...we flatlined at 6mb and the office came to a scretching halt. It was at that point I said, hey I can tell you that the proxy is saving you at a min. 1.5mb of bandwidth LOL. I then went with the cacti templates and I get on average 4-5mb saved, some days up to 8mb! The other reader recommended Calamaris which has some nice reportinginstalling now. -Original Message- From: Beavis [mailto:[EMAIL PROTECTED] Sent: Friday, November 02, 2007 1:00 PM To: squid-users@squid-cache.org Subject: Re: [squid-users] Bandwidth savings? nick, you can always try to do a test without squid and compare your graphs generated by cacti. (with and without squid). this is quite common and always raises management's eyebrows but .. i guess it's part of the Layer 9 (political layer) jk!. cheers, -pf On 11/2/07, Nick Duda [EMAIL PROTECTED] wrote: What is a good utility to determine how much bandwidth in bits/sec or mb is being saved using squid. I'm using the templates for squid in Cacti and its showing some numbers that are showing a good saving and management is having a hard time believing it.
Re: [squid-users] Bandwidth savings?
On Fri, Nov 02, 2007, Nick Duda wrote: What is a good utility to determine how much bandwidth in bits/sec or mb is being saved using squid. I'm using the templates for squid in Cacti and its showing some numbers that are showing a good saving and management is having a hard time believing it. Calamaris, maybe? Adrian -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level bandwidth-capped VPSes available in WA -
[squid-users] Bandwidth savings?
What is a good utility to determine how much bandwidth in bits/sec or mb is being saved using squid. I'm using the templates for squid in Cacti and its showing some numbers that are showing a good saving and management is having a hard time believing it.
Re: [squid-users] Bandwidth savings?
Nick Duda, on 11/02/2007 10:24 PM [GMT+500], wrote : Funny you bring that upbecause we did that unintensional some time back... Basically, we have 4 T1's in a brach office, bonded as a multilink (6mb). Based on this one office bandwidth going out is on average 4.5mb used with Squid in place. One day we had to make some changes and stopped serving from the cache...we flatlined at 6mb and the office came to a scretching halt. It was at that point I said, hey I can tell you that the proxy is saving you at a min. 1.5mb of bandwidth LOL. I then went with the cacti templates and I get on average 4-5mb saved, some days up to 8mb! Also look into 'vnstat' a very nice console application is a network traffic monitor for Linux that keeps a log of daily network traffic for the selected interface(s) http://humdi.net/vnstat/ Regards
[squid-users] Bandwidth Savings
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 -- +==+ |\ _,,,---,,_ | Odhiambo Washington[EMAIL PROTECTED] Zzz /,`.-'`'-. ;-;;,_ | Wananchi Online Ltd. www.wananchi.com |,4- ) )-,_. ,\ ( `'-'| Tel: +254 20 313985-9 +254 20 313922 '---''(_/--' `-'\_) | GSM: +254 722 743223 +254 733 744121 +==+ They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. -- Benjamin Franklin, 1759
Re: [squid-users] Bandwidth Savings
Hello, If your squid is on a separate machine (not used for anything else but web caching) and has only one network interface (to users and to internet), you can monitor the outgoing and incoming bandwidth of the the device. The difference between them is the bandwidth saved by squid. I do that by drawing a rrd graph. Similar graph can be made if you have two interfaces (one to users, other to internet - users outgoing bw minus internet incoming bw), but those must be used only by squid. I hope this helps. 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. -- Anton Glinkov network administrator
Re: [squid-users] Bandwidth Savings
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 -- +==+ |\ _,,,---,,_ | Odhiambo Washington[EMAIL PROTECTED] Zzz /,`.-'`'-. ;-;;,_ | Wananchi Online Ltd. www.wananchi.com |,4- ) )-,_. ,\ ( `'-'| Tel: +254 20 313985-9 +254 20 313922 '---''(_/--' `-'\_) | GSM: +254 722 743223 +254 733 744121 +==+ 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
