[Twisted-Python] Twisted server is 5 times SLOWER on SolaristhanLinux?

Jacob Gabrielson jacob at cozi.com
Fri Jan 19 12:45:28 MST 2007

Yeah, it would be nice to see what the output of "vmstat 10" (or
whatever the equivalent is under Solaris) was during the test.

-- Jacob

-----Original Message-----
From: twisted-python-bounces at twistedmatrix.com
[mailto:twisted-python-bounces at twistedmatrix.com] On Behalf Of Jean-Paul
Sent: Friday, January 19, 2007 11:08 AM
To: Twisted general discussion
Subject: Re: [Twisted-Python] Twisted server is 5 times SLOWER on

On Fri, 19 Jan 2007 11:16:20 -0500, Jarrod Roberson
<jarrod at vertigrated.com> wrote:
>On 1/18/07, Jacob Gabrielson <jacob at cozi.com> wrote:
>>  It would be interesting to know where the CPU time is actually
>Sorry hit return by accident.
>Twisted is eating up all the CPU time.
>What is "slow" is the latency of the entire round trip thru the Twisted
>reactor loop. It is without a doubt Twisted that is the bottleneck.

Can you tell if most of the time is user or system?  If system time is
dominates, it may be worthwhile to investigate /dev/poll.  If most time
spent in userspace, though, you may be right about Twisted being the


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