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seanhess/HelloWorld.js

Created October 18, 2011 22:27
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varnish dropping
Raw
HelloWorld.js
exports.createServer = function() {
var http = require('http');
return http.createServer(function (req, res) {
console.log("req")
res.writeHead(200, {'Content-Type': 'text/plain', 'Cache-Control': 'no-cache'});
res.end('Hello World\n');
})
}
if (module == require.main) {
exports.createServer().listen(1337);
console.log('Server running at http://127.0.0.1:1337/');
}
Raw
itv.vcl
director example round-robin {
{
.backend = {
.host = "10.183.4.80";
.port = "1337";
.probe = {
.url = "/";
.interval = 5s;
.timeout = 1 s;
.window = 5;
.threshold = 3;
}
}
}
{
.backend = {
.host = "10.183.4.149";
.port = "1337";
.probe = {
.url = "/";
.interval = 5s;
.timeout = 1 s;
.window = 5;
.threshold = 3;
}
}
}
}
sub vcl_recv {
# Use our backend
set req.backend = example;
}
sub vcl_fetch {
# Don't cache anything
return (pass);
}
Raw
varnish.sysconfig
# WE ARE USING VARNISH 2.1.5, please use remote <server> setup to config the server
# Configuration file for varnish
#
# /etc/init.d/varnish expects the variable $DAEMON_OPTS to be set from this
# shell script fragment.
#
# Maximum number of open files (for ulimit -n)
NFILES=131072
# Locked shared memory (for ulimit -l)
# Default log size is 82MB + header
MEMLOCK=82000
# Maximum size of corefile (for ulimit -c). Default in Fedora is 0
# DAEMON_COREFILE_LIMIT="unlimited"
# Set this to 1 to make init script reload try to switch vcl without restart.
# To make this work, you need to set the following variables
# explicit: VARNISH_VCL_CONF, VARNISH_ADMIN_LISTEN_ADDRESS,
# VARNISH_ADMIN_LISTEN_PORT, VARNISH_SECRET_FILE, or in short,
# use Alternative 3, Advanced configuration, below
RELOAD_VCL=1
# This file contains 4 alternatives, please use only one.
## Alternative 1, Minimal configuration, no VCL
#
# Listen on port 6081, administration on localhost:6082, and forward to
# content server on localhost:8080. Use a fixed-size cache file.
#
#DAEMON_OPTS="-a :6081 \
# -T localhost:6082 \
# -b localhost:8080 \
# -u varnish -g varnish \
# -s file,/var/lib/varnish/varnish_storage.bin,1G"
## Alternative 2, Configuration with VCL
#
# Listen on port 6081, administration on localhost:6082, and forward to
# one content server selected by the vcl file, based on the request. Use a
# fixed-size cache file.
#
#DAEMON_OPTS="-a :6081 \
# -T localhost:6082 \
# -f /etc/varnish/default.vcl \
# -u varnish -g varnish \
# -S /etc/varnish/secret \
# -s file,/var/lib/varnish/varnish_storage.bin,1G"
## Alternative 3, Advanced configuration
#
# See varnishd(1) for more information.
#
# # Main configuration file. You probably want to change it :)
VARNISH_VCL_CONF=/etc/varnish/itv.vcl
#
# # Default address and port to bind to
# # Blank address means all IPv4 and IPv6 interfaces, otherwise specify
# # a host name, an IPv4 dotted quad, or an IPv6 address in brackets.
# VARNISH_LISTEN_ADDRESS=
VARNISH_LISTEN_PORT=80
# # Telnet admin interface listen address and port
VARNISH_ADMIN_LISTEN_ADDRESS=127.0.0.1
VARNISH_ADMIN_LISTEN_PORT=6082
#
# # Shared secret file for admin interface
VARNISH_SECRET_FILE=/etc/varnish/secret
#
# # The minimum number of worker threads to start
VARNISH_MIN_THREADS=100
#
# # The Maximum number of worker threads to start
VARNISH_MAX_THREADS=4000
#
# # Idle timeout for worker threads
VARNISH_THREAD_TIMEOUT=120
#
# # Cache file location
VARNISH_STORAGE_FILE=/var/lib/varnish/varnish_storage.bin
#
# # Cache file size: in bytes, optionally using k / M / G / T suffix,
# # or in percentage of available disk space using the % suffix.
VARNISH_STORAGE_SIZE=3G
#
# # Backend storage specification
VARNISH_STORAGE="file,${VARNISH_STORAGE_FILE},${VARNISH_STORAGE_SIZE}"
#
# # Default TTL used when the backend does not specify one
VARNISH_TTL=120
# # DAEMON_OPTS is used by the init script. If you add or remove options, make
# # sure you update this section, too.
DAEMON_OPTS="-a ${VARNISH_LISTEN_ADDRESS}:${VARNISH_LISTEN_PORT} \
-f ${VARNISH_VCL_CONF} \
-T ${VARNISH_ADMIN_LISTEN_ADDRESS}:${VARNISH_ADMIN_LISTEN_PORT} \
-t ${VARNISH_TTL} \
-w ${VARNISH_MIN_THREADS},${VARNISH_MAX_THREADS},${VARNISH_THREAD_TIMEOUT} \
-p thread_pools=4 \
-p thread_pool_add_delay=2 \
-p session_linger=150 \
-p sess_timeout=60 \
-u varnish -g varnish \
-S ${VARNISH_SECRET_FILE} \
-s ${VARNISH_STORAGE}" \
#
## Alternative 4, Do It Yourself. See varnishd(1) for more information.
#
# DAEMON_OPTS=""
Raw
varnishstat-after.txt
0+00:00:52 fake1
Hitrate ratio: 3 3 3
Hitrate avg: 0.0000 0.0000 0.0000
33266 0.00 639.73 Client connections accepted
33266 0.00 639.73 Client requests received
33263 0.00 639.67 Cache hits for pass
3 0.00 0.06 Cache misses
44 0.00 0.85 Backend conn. success
33222 0.00 638.88 Backend conn. reuses
33266 0.00 639.73 Backend conn. recycles
33266 0.00 639.73 Fetch chunked
68 . . N struct sess_mem
1 . . N struct sess
3 . . N struct object
64 . . N struct objectcore
64 . . N struct objecthead
10 . . N struct smf
0 . . N small free smf
4 . . N large free smf
44 . . N struct vbe_conn
400 . . N worker threads
400 0.00 7.69 N worker threads created
338 0.00 6.50 N worker threads limited
2 . . N backends
33266 0.00 639.73 Objects sent with write
33266 0.00 639.73 Total Sessions
33266 0.00 639.73 Total Requests
33263 0.00 639.67 Total pass
33266 0.00 639.73 Total fetch
6619929 0.00 127306.33 Total header bytes
399192 0.00 7676.77 Total body bytes
33264 0.00 639.69 Session Closed
33265 0.00 639.71 Session Linger
2 0.00 0.04 Session herd
1896687 2.00 36474.75 SHM records
200065 2.00 3847.40 SHM writes
329 0.00 6.33 SHM MTX contention
33269 0.00 639.79 allocator requests
6 . . outstanding allocations
24576 . . bytes allocated
3221200896 . . bytes free
33266 0.00 639.73 Backend requests made
1 0.00 0.02 N vcl total
1 0.00 0.02 N vcl available
1 . . N total active purges
1 0.00 0.02 N new purges added
33266 0.00 639.73 HCB Lookups without lock
3 0.00 0.06 HCB Lookups with lock
3 0.00 0.06 HCB Inserts
52 1.00 1.00 Client uptime
Raw
varnishstat-before.txt
0+00:00:17 fake1
Hitrate ratio: 1 1 1
Hitrate avg: 0.0000 0.0000 0.0000
6878 1798.94 404.59 Client connections accepted
6876 1798.94 404.47 Client requests received
6875 1798.94 404.41 Cache hits for pass
1 0.00 0.06 Cache misses
11 0.00 0.65 Backend conn. success
6867 1798.94 403.94 Backend conn. reuses
6878 1800.94 404.59 Backend conn. recycles
6876 1798.94 404.47 Fetch chunked
22 . . N struct sess_mem
2 . . N struct sess
1 . . N struct object
17 . . N struct objectcore
17 . . N struct objecthead
6 . . N struct smf
4 . . N large free smf
11 . . N struct vbe_conn
400 . . N worker threads
400 0.00 23.53 N worker threads created
338 0.00 19.88 N worker threads limited
2 . . N backends
6878 1800.94 404.59 Objects sent with write
6876 1798.94 404.47 Total Sessions
6876 1798.94 404.47 Total Requests
6875 1798.94 404.41 Total pass
6876 1798.94 404.47 Total fetch
1368324 357989.36 80489.65 Total header bytes
82512 21587.30 4853.65 Total body bytes
6876 1798.94 404.47 Session Closed
6876 1798.94 404.47 Session Linger
392483 102605.55 23087.24 SHM records
41695 10797.64 2452.65 SHM writes
49 17.97 2.88 SHM MTX contention
6879 1799.94 404.65 allocator requests
2 . . outstanding allocations
8192 . . bytes allocated
3221217280 . . bytes free
6878 1798.94 404.59 Backend requests made
1 0.00 0.06 N vcl total
1 0.00 0.06 N vcl available
1 . . N total active purges
1 0.00 0.06 N new purges added
6878 1798.94 404.59 HCB Lookups without lock
1 0.00 0.06 HCB Lookups with lock
1 0.00 0.06 HCB Inserts
17 1.00 1.00 Client uptime
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