increase hitrate
Miguel Gonzalez
miguel_3_gonzalez at yahoo.es
Thu Apr 16 20:36:28 CEST 2015
Ok, I have just disabled w3 total cache, all deflate, expiresbytype and modpagespeed in .htaccess and now the hitrate is close to 1 and the load time is less than a second (before it was 1.5 seconds).
But still the number of requests per second reported by Apache Benchmark is low.
Regards,
Miguel
De: Miguel Gonzalez <miguel_3_gonzalez at yahoo.es>
Para: "varnish-misc at varnish-cache.org" <varnish-misc at varnish-cache.org>
Enviado: Jueves 16 de abril de 2015 16:44
Asunto: increase hitrate
Dear all,
I have been testing my varnish configuration using tools.pingdom.com, webpagetest.org and loadimpact.com and apache benchmark.
I have Varnish 4.0 in front of an Apache installation from Cpanel in a VPS with 6 Gb with 100 mbps of bandwith.
I'm realizing that i can only get a hitrate around 0.6 and the throughput is around 43 request per second. What am I doing wrong? How can I troubleshoot what's going on?
Thanks
Miguel
This is my /etc/sysconfig/varnish daemon configuration:
/usr/sbin/varnishd -P /var/run/varnish.pid -a :80 -f /etc/varnish/default.vcl -T 127.0.0.1:6082 -t 120 -p thread_pools=2 -p thread_pool_add_delay=1 -p thread_pool_min=500 -p thread_pool_max=2000 -p thread_pool_timeout=120 -u varnish -g varnish -S /etc/varnish/secret -s malloc,3G
This is my default.vcl configuration:
vcl 4.0;
import std;
# Default backend definition. Set this to point to your content server.
backend default {
.host = "192.168.1.10";
.port = "82";
}
acl purge {
"localhost";
}
# This function is used when a request is send by a HTTP client (Browser)
sub vcl_recv {
# remove ?ver=xxxxx strings from urls so css and js files are cached.
# Watch out when upgrading WordPress, need to restart Varnish or flush cache.
set req.url = regsub(req.url, "\?ver=.*$", "");
# Remove "replytocom" from requests to make caching better.
set req.url = regsub(req.url, "\?replytocom=.*$", "");
# We pass real IP to the backend
if (req.restarts == 0) {
if (req.http.X-Forwarded-For) {
set req.http.X-Forwarded-For = req.http.X-Forwarded-For + ", " + client.ip;
} else {
set req.http.X-Forwarded-For = client.ip;
}
}
# Normalize the header, remove the port (in case you're testing this on various TCP ports)
set req.http.Host = regsub(req.http.Host, ":[0-9]+", "");
# Remove has_js and CloudFlare/Google Analytics __* cookies.
set req.http.Cookie = regsuball(req.http.Cookie, "(^|;\s*)(_[_a-z]+|has_js)=[^;]*", "");
# Remove a ";" prefix, if present.
set req.http.Cookie = regsub(req.http.Cookie, "^;\s*", "");
# Allow purging from ACL
if (req.method == "PURGE") {
# If not allowed then a error 405 is returned
if (!client.ip ~ purge) {
return(synth(405, "This IP is not allowed to send PURGE requests."));
}
# If allowed, do a cache_lookup -> vlc_hit() or vlc_miss()
return (purge);
}
# Post requests will not be cached
#if (req.http.Authorization || req.method == "POST") {
# return (pass);
#}
# Pass anything other than GET and HEAD directly.
if (req.method != "GET" && req.method != "HEAD") {
return( pass );
} /* We only deal with GET and HEAD by default */
# --- WordPress specific configuration
# Did not cache the admin and login pages
if (req.url ~ "wp-(login|admin)" || req.url ~ "preview=true") {
return (pass);
}
if (req.url ~ "(ajax|dynamic|custom)") {
return(pass);
}
# Remove the "has_js" cookie
set req.http.Cookie = regsuball(req.http.Cookie, "has_js=[^;]+(; )?", "");
# Remove any Google Analytics based cookies
set req.http.Cookie = regsuball(req.http.Cookie, "__utm.=[^;]+(; )?", "");
# Remove the Quant Capital cookies (added by some plugin, all __qca)
set req.http.Cookie = regsuball(req.http.Cookie, "__qc.=[^;]+(; )?", "");
# Remove the wp-settings-1 cookie
set req.http.Cookie = regsuball(req.http.Cookie, "wp-settings-1=[^;]+(; )?", "");
# Remove the wp-settings-time-1 cookie
set req.http.Cookie = regsuball(req.http.Cookie, "wp-settings-time-1=[^;]+(; )?", "");
# Remove the wp test cookie
set req.http.Cookie = regsuball(req.http.Cookie, "wordpress_test_cookie=[^;]+(; )?", "");
# Are there cookies left with only spaces or that are empty?
if (req.http.cookie ~ "^ *$") {
unset req.http.cookie;
}
# Cache the following files extensions
if (req.url ~ "\.(css|js|png|gif|jp(e)?g|swf|ico)") {
unset req.http.cookie;
}
# Normalize Accept-Encoding header and compression
# https://www.varnish-cache.org/docs/3.0/tutorial/vary.html
if (req.http.Accept-Encoding) {
# Do no compress compressed files...
if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg)$") {
unset req.http.Accept-Encoding;
} elsif (req.http.Accept-Encoding ~ "gzip") {
set req.http.Accept-Encoding = "gzip";
} elsif (req.http.Accept-Encoding ~ "deflate") {
set req.http.Accept-Encoding = "deflate";
} else {
unset req.http.Accept-Encoding;
}
}
# Check the cookies for wordpress-specific items
if (req.http.Cookie ~ "wordpress_" || req.http.Cookie ~ "comment_") {
return (pass);
}
if (!req.http.cookie) {
unset req.http.cookie;
}
# --- End of WordPress specific configuration
# Did not cache HTTP authentication and HTTP Cookie
if (req.http.Authorization || req.http.Cookie) {
# Not cacheable by default
return (pass);
}
# Cache all others requests
return (hash);
}
sub vcl_pipe {
return (pipe);
}
sub vcl_pass {
return (fetch);
}
# The data on which the hashing will take place
sub vcl_hash {
hash_data(req.url);
if (req.http.host) {
hash_data(req.http.host);
} else {
hash_data(server.ip);
}
# If the client supports compression, keep that in a different cache
if (req.http.Accept-Encoding) {
hash_data(req.http.Accept-Encoding);
}
return (lookup);
}
# This function is used when a request is sent by our backend (Nginx server)
sub vcl_backend_response {
# Remove some headers we never want to see
unset beresp.http.Server;
unset beresp.http.X-Powered-By;
# For static content strip all backend cookies
if (bereq.url ~ "\.(css|js|png|gif|jp(e?)g)|swf|ico") {
unset beresp.http.cookie;
}
# Don't store backend
if (bereq.url ~ "wp-(login|admin)" || bereq.url ~ "preview=true") {
set beresp.uncacheable = true;
set beresp.ttl = 30s;
return (deliver);
}
# Only allow cookies to be set if we're in admin area
if (!(bereq.url ~ "(wp-login|wp-admin|preview=true)")) {
unset beresp.http.set-cookie;
}
# don't cache response to posted requests or those with basic auth
if ( bereq.method == "POST" || bereq.http.Authorization ) {
set beresp.uncacheable = true;
set beresp.ttl = 120s;
return (deliver);
}
# don't cache search results
if ( bereq.url ~ "\?s=" ){
set beresp.uncacheable = true;
set beresp.ttl = 120s;
return (deliver);
}
# only cache status ok
if ( beresp.status != 200 ) {
set beresp.uncacheable = true;
set beresp.ttl = 120s;
return (deliver);
}
# A TTL of 2h
set beresp.ttl = 2h;
# Define the default grace period to serve cached content
set beresp.grace = 30s;
return (deliver);
}
# The routine when we deliver the HTTP request to the user
# Last chance to modify headers that are sent to the client
sub vcl_deliver {
if (obj.hits > 0) {
set resp.http.X-Cache = "cached";
} else {
set resp.http.x-Cache = "uncached";
}
# Remove some headers: PHP version
unset resp.http.X-Powered-By;
# Remove some headers: Apache version & OS
unset resp.http.Server;
# Remove some heanders: Varnish
unset resp.http.Via;
unset resp.http.X-Varnish;
return (deliver);
}
sub vcl_init {
return (ok);
}
sub vcl_fini {
return (ok);
}
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