Alexey Shchepin

Message Archiving Benchmark: How Many Letters Are in Messages?

July 08, 2007
Let's look at distribution of the number of letters in message's body. Note, that it's not a byte length, it's an amount of Unicode symbols. Cyrillic characters are represented using 2 bytes in UTF-8, so some messages can be actually 2 times longer in bytes. Also AFAIK English sentences are generally shorter than Russian, so average message length should be less for servers with English-speaking users.

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Categories: Jabber / XMPP  


Message Archiving Benchmark: General Statistics

July 08, 2007
A few days ago I updated mod_archive (XEP-0136) ejabberd module to support PostgreSQL with text search feature (tsearch2). Simple benchmarks looked good, so to benchmark it on real traffic I ran it with enabled automated archiving on one of two jabber.ru nodes for 24 hours on business day. It worked smoothly and I didn't notice any performance downgrades or higher CPU load.

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Categories: Jabber / XMPP  


Client and OS statistics on jabber.ru

July 06, 2007
Today we gathered iq:version replies from clients connected to jabber.ru at 14:49 MSD. 4639 replies were received.

OS statistics: 

Windows         2576 (56%)
Linux	        1033 (22%)
MIDP2	         601 (13%)
FreeBSD	          73 (1.6%)
Darwin	          39 (0.84%)


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Categories: Jabber / XMPP