[Samba] Disaster Recovery Activity with Samba-AD-DC

[Anantha Raghava]

Hi,

List of services:

1. smbd - average - 538 threads - consuming approximately 20%

2. ldap - average - 8 threads - consuming approximately - 15%

3. dns[master] - average - 22 threads - consuming approximately 38%, 
sometimes it tops at 95%

4. other processes - kdc, samba-dcerpcd, cladap[master], drepl[master], 
rpc - consuming anywhere between 2% - 6% of the CPU.

Other points to note:

1. We are using Samba Internal DNS

2. These are pure AD servers.

Any other OS parameters to be fine-tuned?

Now, we have 16 Cores (2 Socket x 8 cores each), 24 GB RAM on each 
server (Virtual Machine).

Thanks & Regards,

Anantha Raghava H A


DISCLAIMER:
This e-mail communication and any attachments may be privileged and 
confidential to Exza Technology Consulting & Services, Indryve Inc & 
their group companies, and are intended only for the use of the 
recipients named above If you are not the addressee you may not copy, 
forward, disclose or use any part of it. If you have received this 
message in error, please delete it and all copies from your system and 
notify the sender immediately by return e-mail. Internet communications 
cannot be guaranteed to be timely, secure, error or virus-free. The 
sender does not accept liability for any errors or omissions.

Do not print this e-mail unless required. Save Paper & trees.


On 17/05/24 11:48 pm, Jeremy Allison wrote:
> On Fri, May 17, 2024 at 03:01:44PM +0530, Anantha Raghava via samba 
> wrote:
>> Hi,
>>
>> We increased the CPU count of one of the samba-ad servers in Data 
>> Center B, and the problem seems to have come under control, despite 
>> an observable delay. It is also observed that on one of the servers 
>> that held PDC Emulator, naming, dnsname, forestdns FSMO roles, the 
>> CPU consumption was consistently over 85% consistently and even 
>> spiking to 100% . Except samba-ad-dc, no other services are running 
>> on these servers.
>
> Do you have any data on what processes were using all that CPU ?