Mail Archives: cygwin/2008/03/12/17:47:43
Stephen David wrote:
> Hello again,
>
>>> Hello,
>>>
>>> I recently installed cygwin on a new windows 2003 server box, and am
>>> experiencing 100% CPU utilization for several seconds (approx 7) when
>>> running many commands via ssh connection *to* that box -- even simple
>>> commands like "ls -l", "find", that usually return immediately.
>>>
>>> What's more interesting is when I run sshd in a command window
>>> (either with -d or not) on the server, instead of via service control
>>> manager/cygrunsrv, the problem goes away. I've tried reverting back to the
>>> previous cygrunsrv version (1.18), with no change in behavior. I've also
>>> experimented with various settings in the sshd service (ntsec, etc).
I hope/assume that when you ran in the console you ran from a shell owned
by the user running the service. If not, it's not a fair test and could
have messed up permissions on files and directories that the
service-oriented sshd needs.
>>> I also suspected that it might only involve commands that interact
>>> heavily with the filesystem, but even trying to run "vi" with a small file
>>> or no file at all produces the same result.
>>>
>>> I saw in the list archives some suggestion about anti-virus/firewall
>>> software causing problems when forking processes, but i don't have any
>>> installed on this machine at the moment.
>>>
>>> Any thoughts on where I should turn next to troubleshoot?
>>>
>>> I've attached 'cygcheck -s -v -r' output.
>
> With regard to this performance problem, I've discovered that this is not
> just an sshd problem -- scripts/commands I run through cron also exhibit the
> same behavior. (ie. find, curl, date, etc). Is there something about the
> user context under which these services run that could be causing this? Or
> does this point to cygrunsrv?
>
> I should note this is a multi-processor machine (2 dual-core CPUs) -- not
> sure if there could be any issues there.
>
> re-attached cygcheck output for reference.
Try creating a local service account (sshd_server) rather than a domain
one. That would be more typical and could explain the difference.
--
Larry Hall http://www.rfk.com
RFK Partners, Inc. (508) 893-9779 - RFK Office
216 Dalton Rd. (508) 893-9889 - FAX
Holliston, MA 01746
_____________________________________________________________________
A: Yes.
> Q: Are you sure?
>> A: Because it reverses the logical flow of conversation.
>>> Q: Why is top posting annoying in email?
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