Socket I/O Problems with UNIX Squeak 3.8a1 VM
Ragnar Hojland Espinosa
ragnar.hojland at linalco.com
Mon Aug 22 08:39:15 UTC 2005
On Sat, Aug 20, 2005 at 11:33:09AM -0400, David Shaffer wrote:
> I have been trying to figure out why Squeak performs so badly as a
> webserver. With some help from John McIntosh (thanks John!) I was able
> to track down a problem in the Unix VM's socket I/O support. The
> problem is the standard "missed signal" when using select(). When the
> Squeak VM enters aioPoll() it uses a select() to check for activity on
> various sockets (and other file descriptors -- but I'll stick to TCP
> sockets here). For server sockets (passive TCP sockets) who have
> received new connections it proceeds to call accept() once and then
> signal the appropriate semaphore. The problem is that more than one new
Looong time ago I posted a patch to use the new 2.6 kernel AIO
support. Maybe this would work better? I don't know... I'll need
some caffeine :)
--
Ragnar Hojland - Project Manager
Linalco "Specialists in Linux and Free Software"
http://www.linalco.com Tel: +34-91-4561700
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