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[Samba] Samba High CPU usage

Started byPatrik Laszlo via samba <samba@lists.samba.org>
First post2017-03-05 18:10 +0100
Last post2017-03-06 15:10 +0100
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  [Samba] Samba High CPU usage Patrik Laszlo via samba <samba@lists.samba.org> - 2017-03-05 18:10 +0100
    Re: [Samba] Samba High CPU usage Adam Tauno Williams via samba <samba@lists.samba.org> - 2017-03-06 15:10 +0100

#60170 — [Samba] Samba High CPU usage

FromPatrik Laszlo via samba <samba@lists.samba.org>
Date2017-03-05 18:10 +0100
Subject[Samba] Samba High CPU usage
Message-ID<thHPs-3lk-9@gated-at.bofh.it>
Hi!

Just a simple question. Do you know how to make it use lower CPU usage. 
How can I configure Samba Domain Controller to use less CPU?

My server is using for every HTTPS AUTH PAM.D LDAP / SSH / WIndows 
Network / Windows Login, but it is a simple login. How can it is so 
slow? How can I make it faster? Or use it like SQL server backend or 
something?

Sometimes, when I copy like 1000 files form one file to another server 
it goes beyond 50%.

Looks a bit high for me.

Any options?

Thanks!


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#60179

FromAdam Tauno Williams via samba <samba@lists.samba.org>
Date2017-03-06 15:10 +0100
Message-ID<ti1uN-Rx-5@gated-at.bofh.it>
In reply to#60170
Quoting Patrik Laszlo via samba <samba@lists.samba.org>:
> Just a simple question. Do you know how to make it use lower CPU  
> usage. How can I configure Samba Domain Controller to use less CPU?
> My server is using for every HTTPS AUTH PAM.D LDAP / SSH / WIndows  
> Network / Windows Login, but it is a simple login. How can it is so  
> slow? How can I make it faster? Or use it like SQL server backend or  
> something?
> Sometimes, when I copy like 1000 files form one file to another  
> server it goes beyond 50%.
>
> Looks a bit high for me.
>
> Any options?

What is your debugging/logging level?  I have seen high debugging  
levels drive high CPU usage.

How many users?

What is your underlying storage?  Wait times?  I/O latency?

Is the the samba process specifically driving the high CPU utilization?

Are you doing lots of authentication requests via pam_krb5? (that can  
be the slowest form of authentication).




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