Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

From: Ingo Molnar
Date: Fri Feb 23 2007 - 06:57:42 EST

* Evgeniy Polyakov <johnpol@xxxxxxxxxxx> wrote:

> [...] Those 20k blocked requests were created in about 20 seconds, so
> roughly saying we have 1k of thread creation/freeing per second - do
> we want this?

i'm not sure why you mention thread creation and freeing. The
syslet/threadlet code reuses already created async threads, and that is
visible all around in both the kernel-space and in the user-space
syslet/threadlet code.

While Linux creates+destroys threads pretty damn fast (in about 10-15
usecs - which is roughly the cost of getting a single 1-byte packet
through a TCP socket from one process to another, on localhost), still
we dont want to create and destroy a thread per request.

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