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RE: Oh, one more question about sunra..


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  • From: Scott Cantor <>
  • To: , 'Dan Pritts' <>
  • Cc: 'Derek Atkins' <>, 'Shibboleth Design Team' <>
  • Subject: RE: Oh, one more question about sunra..
  • Date: Fri, 18 Jul 2003 12:01:19 -0400
  • Importance: Normal
  • Organization: The Ohio State University

> The directory server was installed on 2/24/03.

Thanks, that matched the date on the file. I'm assuming that you rebooted it
at that point?

If so, I'm pretty much lost as to why we just now noticed the problem, since
I've run the target on and off there for the last several months. Not often,
but this bug is impossible to miss. ;-)

After thinking about it, it's clear to me that there's a problem with the
sys/select.h header and the data types it defines if you raise the limit
past 1024, *and* use a system call to determine the kernel parameter.
Quoting the man page:

The poll(2) function is preferred over this function. It must be used
when the number of file descriptors exceeds FD_SETSIZE.

Pretty clear, I guess.

Anyway, there's no harm in having the lower number, since the directory
there isn't going to be handling large numbers of connections, but I would
guess that web servers tell sysadmins the same advice, and we'd kind of like
Shib to work on web servers. ;-)

-- Scott

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