Re: [squid-users] Squid is responsing very slowly, when opening page for first time.

It apllies for first visit of each server. Response for each server
visited for the first time is slow.

Here is relevant part of access.log

1147160886.726 83 172.16.0.14 TCP_MISS/200 10134 GET
http://www.seznam.cz/ - DIRECT/194.228.32.3 text/html
1147160886.926 4 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/logo-kveten.gif - NONE/- image/gif
1147160886.942 14 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/ad/1/5081/48642/264624_0.gif - NONE/- image/gif
1147160886.948 6 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/pipe.gif - NONE/- image/gif
1147160886.960 16 172.16.0.14 TCP_HIT/200 995 GET
http://1.im.cz/szn/img/h/9.gif - NONE/- image/gif
1147160886.960 13 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/arr_inet.gif - NONE/- image/gif
1147160886.967 17 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/note-small-ico.gif - NONE/- image/gif
1147160886.970 50 172.16.0.14 TCP_MISS/200 445 GET
http://www.seznam.cz/et - DIRECT/194.228.32.3 text/plain
1147160886.971 4 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/rising_down.gif - NONE/- image/gif
1147160886.973 4 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/weather/PB.gif - NONE/- image/gif
1147160886.973 4 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/weather/SJ.gif - NONE/- image/gif
1147160886.973 6 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/hledaci-pes-kveten.gif - NONE/- image/gif
1147160886.982 4 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/ico_lide.gif - NONE/- image/gif
1147160886.983 5 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/rising_up.gif - NONE/- image/gif
1147160886.983 5 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/bck_lines.gif - NONE/- image/gif
1147160886.986 6 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/sport.gif - NONE/- image/gif
1147160886.990 3 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/bck_line.gif - NONE/- image/gif
1147160886.993 5 172.16.0.14 TCP_IMS_HIT/304 294 GET
http://1.im.cz/homepage/img/ico_rss.gif - NONE/- image/gif
1147160887.016 36 172.16.0.14 TCP_MISS/200 514 GET
http://ad.seznam.cz/miss? - DIRECT/212.80.76.72 image/gif
1147160887.025 32 172.16.0.14 TCP_MISS/200 514 GET
http://ad.seznam.cz/impress? - DIRECT/212.80.76.72 image/gif
1147160887.043 15 172.16.0.14 TCP_MEM_HIT/200 1257 GET
http://seznam.hit.gemius.pl/gemiusaudience.html - NONE/- text/html
1147160887.062 37 172.16.0.14 TCP_MISS/302 524 GET
http://gdecz.hit.gemius.pl/_1147160929764/redot.gif? -
DIRECT/217.11.237.209 text/html
1147160887.080 71 172.16.0.14 TCP_MISS/200 514 GET
http://ad.seznam.cz/miss? - DIRECT/212.80.76.72 image/gif
1147160887.177 68 172.16.0.14 TCP_MISS/200 449 GET
http://gdecz.hit.gemius.pl/_1147160929764/dot.gif? -
DIRECT/217.11.237.209 image/gif
1147160887.191 58 172.16.0.14 TCP_MISS/200 1579 GET
http://seznam.hit.gemius.pl/_1147160930030/reppdot.js? -
DIRECT/212.80.76.201 application/x-javascript

Internal DNS statistic from cachemgr (dns server is bind9 running on
localhost):

Internal DNS Statistics :

The Queue:
                       DELAY SINCE
  ID SIZE SENDS FIRST SEND LAST SEND
------ ---- ----- ---------- ---------
0x53fa 32 1 3.754 3.754

Nameservers:
IP ADDRESS # QUERIES # REPLIES
--------------- --------- ---------
127.0.0.1 437 436

Rcode Matrix:
RCODE ATTEMPT1 ATTEMPT2 ATTEMPT3
    0 51275 1 0
    1 0 0 0
    2 2 1 1
    3 4431 0 0
    4 0 0 0
    5 0 0 0

And maybe this could help:

FQDN Cache Statistics:
FQDNcache Entries: 14
FQDNcache Requests: 2621967
FQDNcache Hits: 580
FQDNcache Negative Hits: 0
FQDNcache Misses: 2621387
Blocking calls to gethostbyaddr(): 0
FQDN Cache Contents:

Address Flg TTL Cnt Hostnames
list of my servers

Ican see no further messages in cache.log.
Thanks for reply.

Jiri

Mark Elsen napsal(a):
>> Hello,
>> I have little "slow response" issue. Squid 2.5.STABLE9, Debian Sarge.
>> When I open web page for the first time, the response from squid is very
>> slow.
>
> Is it only for the first page ?
>
>> It lasts up tu 8 seconds to open desired web page (10 Mbit line, average
>> latency 30-40ms).
>> When I turn cache off, the opening of the same web page lasts less then
>> 1 second.
>> Can someone give advise what to do to speed my squid up.
>>
>
> - Check access.log for this URL, the response time, is one
> of the fields in the access log entry (see FAQ on access log format).
> What is the response time reported in access.log ?
>
> - Is DNS working dequately ? Resolving problems ?
> Check cachemgr -> DNS stats.
>
> - Any futher messages in cache.log ?
>
> M.
>
Received on Tue May 09 2006 - 01:59:34 MDT