[Samba] CPU consumption of samba rises to 100%
- Date: Tue, 26 Jun 2018 15:38:35 +0200
- From: Ali Fahimi via samba <samba@xxxxxxxxxxxxxxx>
- Subject: [Samba] CPU consumption of samba rises to 100%
CPU consumption of samba rises to 100%
I am doing Achilles tests on a Linux-based server. I have noticed that
during certain tests (and UDP port discovery), the temperature of the CPU
cores surges to around 80-90 °C which causes the CPU clock to throttle and
renders the server practically unresponsive.
Following closer investigations, we found out that there is a direct link
between the rise of CPU consumption by a certain process and the CPU
temperature. In our case, the concerned process is Samba
We are using samba4 in the full active directory mode.
OS: Ubuntu 14.04 LTS
Samba version: 4.3.11
In our environment, there is a direct connection between the server running
Samba and the test PC; no other element in the network.
As far as we understand, this looks like a DoS attack. Certain tests render
the server completely unresponsive.
Is this a known issue? If yes, is there a fix for it?
Thank you in advance,
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