[geeks] Solaris 10 max connections limit?
velociraptor at gmail.com
Wed May 27 23:42:33 CDT 2009
On May 27, 2009, at 3:25 PM, Phil Stracchino wrote:
> Phil Stracchino wrote:
>> Phil Stracchino wrote:
>>> I'm installing NUT (Network UPS Tools) on my Solaris 10 x86 box, and
>>> upsd is dying because when it requests FD_SETSIZE (1024) maximum
>>> connections by default, it's apparently getting back only 256
>>> Not that I'm ever going to need even 256 ... I actually just
>>> patched the
>>> code to request only 128, and even that is overkill in my
>>> But does anyone know why Solaris 10 would limit a privileged
>>> started by root to 256 connections? Is it a configurable limit?
>> Further: it appears tcp_conn_req_max_q defaults to 128. I can't
>> any applicable tunables that default to 256.
> Aaaahhh .... found it. Looks like rlim_fd_cur is the culprit,
> defaulting to 256. I'll increase this to 2048 on my next reboot and
> if that does the job.
That may be a tunable that doesn't require a reboot. Check out /etc/
projects and related. It is part of the new "fair share scheduler"
system for handling resource management of processes, owners and groups.
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