I was testing out using a HEAD request to pre-load my cache with newly
created content (which it does, good) and I noticed a weird timeout.
When I use curl it takes a few seconds before timing out. This is even
the case when the body is only a few bytes.
# time curl -v -X HEAD http://www.varnish-cache.org
* About to connect() to www.varnish-cache.org port 80
* Trying 87.238.37.6... connected
* Connected to www.varnish-cache.org (87.238.37.6) port 80
HEAD / HTTP/1.1
User-Agent: curl/7.15.5 (x86_64-redhat-linux-gnu) libcurl/7.15.5
OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5
Host: www.varnish-cache.org
Accept: */*
< HTTP/1.1 200 OK
< Server: Apache/2.2.14 (Ubuntu)
< X-Powered-By: PHP/5.3.2-1ubuntu4.7
< Cache-Control: public, max-age=43200
< Last-Modified: Wed, 23 Feb 2011 11:20:32 +0000
< Expires: Sun, 11 Mar 1984 12:00:00 GMT
< Vary: Cookie,Accept-Encoding
< ETag: "1298460032"
< Content-Type: text/html; charset=utf-8
< Content-Length: 23470
< Date: Wed, 23 Feb 2011 21:58:26 GMT
< X-Varnish: 864838647 864663774
< Age: 38274
< Via: 1.1 varnish
< Connection: keep-alive
* transfer closed with 23470 bytes remaining to read
* Closing connection #0
curl: (18) transfer closed with 23470 bytes remaining to read
real 0m5.833s
user 0m0.002s
sys 0m0.002s
Compare this to a normal GET
# time curl -v http://www.varnish-cache.org > /dev/null
* About to connect() to www.varnish-cache.org port 80
* Trying 87.238.37.6... connected
* Connected to www.varnish-cache.org (87.238.37.6) port 80
GET / HTTP/1.1
User-Agent: curl/7.15.5 (x86_64-redhat-linux-gnu) libcurl/7.15.5
OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5
Host: www.varnish-cache.org
Accept: */*
< HTTP/1.1 200 OK
< Server: Apache/2.2.14 (Ubuntu)
< X-Powered-By: PHP/5.3.2-1ubuntu4.7
< Cache-Control: public, max-age=43200
< Last-Modified: Wed, 23 Feb 2011 11:20:32 +0000
< Expires: Sun, 11 Mar 1984 12:00:00 GMT
< Vary: Cookie,Accept-Encoding
< ETag: "1298460032"
< Content-Type: text/html; charset=utf-8
< Content-Length: 23470
< Date: Wed, 23 Feb 2011 22:00:22 GMT
< X-Varnish: 864838987 864663774
< Age: 38390
< Via: 1.1 varnish
< Connection: keep-alive
% Total % Received % Xferd Average Speed Time Time Time
Current
Dload Upload Total Spent Left
Speed
100 23470 100 23470 0 0 39348 0 --:--:-- --:--:-- --:--:--
72243* Connection #0 to host www.varnish-cache.org left intact
* Closing connection #0
real 0m0.602s
user 0m0.001s
sys 0m0.004s
--
Simon Lyall | Very Busy | Web: http://www.darkmere.gen.nz/
"To stay awake all night adds a day to your life" - Stilgar | eMT.
_______________________________________________
varnish-misc mailing list
[email protected]
http://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
