Author Topic: squid - TCP_MISS (Read 37190 times)

sathish · « **on:** December 19, 2004, 12:16:23 PM »

Hi !!!

I have configure squid in redhat9.0, i have configured it correctly, but in the windowz client browsing is very slow.. if I see the access.log.. the all the enteries is as follows

1103456003.696 3234 192.168.1.4 TCP_MISS/200 13470 GET http://www.american-pictures.com/gallery/personal/book9t-x.jpg - DIRECT/66.194.239.2 image/jpeg
1103456020.872 3324 192.168.1.4 TCP_MISS/200 39611 GET http://www.american-pictures.com/english/jacob/jokes1.htm - DIRECT/66.194.239.2 text/html
1103456055.723 2388 192.168.1.4 TCP_MISS/200 24197 GET http://www.google.com/search? - DIRECT/216.239.57.147 text/html
1103456059.540 1185 192.168.1.4 TCP_MISS/204 213 GET http://www.google.com/url? - DIRECT/216.239.57.103 text/html
1103456068.239 9391 192.168.1.4 TCP_MISS/000 0 GET http://www.collegeboard.com/ - NONE/- -
1103456418.821 10782 192.168.1.4 TCP_MISS/200 3047 GET http://www.google.com/ - DIRECT/216.239.57.147 text/html
1103456441.486 14607 192.168.1.4 TCP_MISS/200 38865 GET http://www.yahoo.com/ - DIRECT/66.94.230.33 text/html

in each and every entry itz giving TCP_MISS - what is mean by that ?? Is any wrong configuration in squid..and even the browsing is very slow..

Plz let me know what to do ??

and also I want this IP address 129.41.xx.xx port :42xxx itz a online software, this ip&port should not go through squid [it should bypass].
what code to be put in iptables to make changes.

Thanks in advance...

Sathish

Ricky · « **Reply #1 on:** December 21, 2004, 11:07:37 AM »

Your first problem is not a problem,
Squid is a advance and well developed caching proxy servers, so it takes care that it always delivers the right contents , in order to do so it is not simple that when a page is viewed first time will be retrived from cache on second time. Few page uses no_cache directive which means it will never be cached by a good cache proxy server.
Now what is TCP_MISS, it simply means that the specified URL is not retrived from cache, TCP_HIT means it has been retrived from cache, whenever u find HIT then it is from cache,
BTW if you want loose caching then can look for wwwoffle

Quote

and also I want this IP address 129.41.xx.xx port :42xxx itz a online software, this ip&port should not go through squid [it should bypass].
what code to be put in iptables to make changes.

Are you asking to block that ip or port or want squid to not to do anything with it ?

sathish · « **Reply #2 on:** December 21, 2004, 04:25:58 PM »

Hi ricky,

Thanks for the reply, yeah i wanted squid not to do nothing with that ip and port.

Thanks!!!

arulthas · « **Reply #3 on:** December 29, 2004, 07:15:09 AM »

Good day Ricky,

In my case the access.log captures tcp_miss even if I visit the same URL repetitively.

How to I setup squid to cache?

Thank you.

Best regards,
Arulthas.

Quote from: "Ricky"

Now what is TCP_MISS, it simply means that the specified URL is not retrived from cache, TCP_HIT means it has been retrived from cache, whenever u find HIT then it is from cache.

Ricky · « **Reply #4 on:** December 29, 2004, 08:00:12 AM »

Well some pages have directive no_cache, then it will never be cached by any good caching software.. eg.. Every page of LS has no cache directive!

arulthas · « **Reply #5 on:** December 29, 2004, 08:31:15 AM »

Hi Ricky,

In this case can you suggest a website which have cache feature and the following is for testing our squid configuration.

Thank you.

Best regards,
Arulthas.

Quote from: "Ricky"

Well some pages have directive no_cache, then it will never be cached by any good caching software.. eg.. Every page of LS has no cache directive!

Ricky · « **Reply #6 on:** December 29, 2004, 08:57:21 AM »

every simple html file can be cached easily !

omnia · « **Reply #7 on:** January 06, 2005, 11:17:56 AM »

so what is the meaning of TCP_IMS_HIT , TCP_MEM_HIT and TCP_NEGATIVE_HIT

Ricky · « **Reply #8 on:** January 06, 2005, 02:37:08 PM »

here is look this.. Squid cache.log errors