ezachte at wikimedia
Apr 10, 2012, 4:45 PM
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Here are some numbers on total bot burden:
1)
http://stats.wikimedia.org/wikimedia/squids/SquidReportCrawlers.htm states
for March 2012:
In total 69.5 M page requests (mime type text/html only!) per day are
considered crawler requests, out of 696 M page requests (10.0%) or 469 M
external page requests (14.8%). About half (35.1 M) of crawler requests come
from Google.
2)
Here are counts from one day log, as sanity check:
zcat sampled-1000.log-20120404.gz | awk '{print $9, $11, $14}' | grep -P
'/wiki/|index.php' | grep -cP ' - |text/html' => 678325
zcat sampled-1000.log-20120404.gz | awk '{print $9, $11, $14}' | grep -P
'/wiki/|index.php' | grep -P ' - |text/html' | grep -ciP
'bot|crawler|spider' => 68027
68027 / 678325 = 10.0% which matches really well with numbers from
SquidReportCrawlers.htm
---
My suggestion for how to filter these bots efficiently in c program (no
costly nuanced regexps) before sending data to webstatscollector:
a) Find 14th field in space delimited log line = user agent (but beware of
false delimiters in logs from varnish, if still applicable)
b) Search this field case insensitive for bot/crawler/spider/http (by
convention only bots have url in agent string)
That will filter out most bot pollution. We still want those records in
sampled log though.
Any thoughts?
Erik Zachte
-----Original Message-----
From: wikitech-l-bounces [at] lists
[mailto:wikitech-l-bounces [at] lists] On Behalf Of emijrp
Sent: Sunday, April 08, 2012 9:21 PM
To: Wikimedia developers
Cc: Diederik van Liere; Lars Aronsson
Subject: Re: [Wikitech-l] Page views
2012/4/8 Erik Zachte <ezachte [at] wikimedia>
> Hi Lars,
>
> You have a point here, especially for smaller projects:
>
> For Swedish Wikisource:
>
> zcat sampled-1000.log-20120404.gz | grep 'GET
> http://sv.wikisource.org' | awk '{print $9, $11,$14}'
>
> returns 20 lines from this 1:1000 sampled squid log file after
> removing javascript/json/robots.txt there are 13 left, which fits
> perfectly with 10,000 to 13,000 per day
>
> however 9 of these are bots!!
>
>
How many of that 1000 sample log were robots (including all languages)?
--
Emilio J. Rodríguez-Posada. E-mail: emijrp AT gmail DOT com Pre-doctoral
student at the University of Cádiz (Spain)
Projects: AVBOT <http://code.google.com/p/avbot/> |
StatMediaWiki<http://statmediawiki.forja.rediris.es>
| WikiEvidens <http://code.google.com/p/wikievidens/> |
WikiPapers<http://wikipapers.referata.com>
| WikiTeam <http://code.google.com/p/wikiteam/>
Personal website: https://sites.google.com/site/emijrp/
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