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Old 28th September 2011
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Carpetsmoker Carpetsmoker is offline
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Default 1 million established tcp sessions

http://blog.whatsapp.com/index.php/2011/09/one-million/

Quote:
[...]achieved 1 million established tcp sessions on a single machine (and with memory and cpu to spare!)

$ netstat -an | grep -c EST
1016313

[...]

For those curious how we did it, the technology on the backend is simple: FreeBSD + Erlang
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Old 28th September 2011
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I'm curious, what did the million tcp connections accomplished?
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Old 28th September 2011
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A very efficient DHCP or bootp server.
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Old 29th September 2011
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Not sure if that was a joke, but, DHCP/bootp do not use TCP.
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Old 30th September 2011
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BSD666, I just ran the command:

netstat -an |grep -c EST on an OBSD 4.9, I get 0.

Can you please elaborate on how/what your server did to get 1,000,000 TCP connections. Just curious.

Thank you.
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Old 30th September 2011
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This is not my server ...

You get 1M connections by having lots of people connect to you ... :-|

The command above will produce the amount of tcp connections with the state ESTABLISHED, I don't know what the command is for OpenBSD, but IIRC it's the same. Look at netstat(1) if you're curious.
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Old 30th September 2011
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Thank you.
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