Re: Performance Problems ntlm_auth <-> Active Directory under heavy load
Hi, [Please keep replies on-list] On Thu, Mar 19, 2015 at 12:58:40PM +0000, tom greisch wrote:
Looks to me like you may have hit a different bug in winbind. Try running ntlm_auth from the command line and see if it gives the same problem.
if i use ntlm_auth from the command line a Backtrace is not logged. A Backtrace Log is also not generated if Freeradius does only few "sporadic" User Authentications. If the Count of Authentication increases i get a a lot of Backtraces logged.
There are plenty of people running in this configuration, and this is the first I've heard of winbind/ntlm_auth crashing and producing backtraces. So it's likely something is odd about your setup. Have you tried Debian stable - it's possible there is a bug in the Samba version in Jessie.
ntlm_auth in freeradius not that ntlm_auth is the cause... sorry my english is really not perfect but i hope you understand what i mean...
Your English is good.
No, it doesn't say that, and you shouldn't do that. It will kill performance. Use ntlm_auth if you can't use the new patches (which aren't released yet anyway). yes of course i know that i will lose Performance but is it not better than a lot of Backtrace Logs or core dumps..
I think you should try a different version of Samba. Other people don't see that. They _do_ see performance issues with too many auths/second, which is, I believe, from the way people have to use ntlm_auth at present, which isn't really a Samba issue. Thanks, Matthew -- Matthew Newton, Ph.D. <mcn4@le.ac.uk> Systems Specialist, Infrastructure Services, I.T. Services, University of Leicester, Leicester LE1 7RH, United Kingdom For IT help contact helpdesk extn. 2253, <ithelp@le.ac.uk>
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Matthew Newton