Strongswan software iterupts
I'm using Strongswan strongSwan 5.7.1, Linux 3.10.0-957.1.3.el7.x86_64, x86_64 paired with cisco device.
I started to route more traffic ~500mb/s into strongswan side, and after that i started to get software interupts:
%Cpu4 : 2.8 us, 5.6 sy, 0.0 ni, 29.2 id, 0.0 wa, 0.0 hi, 62.5 si, 0.0 st
%Cpu5 : 3.9 us, 5.2 sy, 0.0 ni, 22.1 id, 0.0 wa, 0.0 hi, 68.8 si, 0.0 st
afaik it could slow down performance.
Is there any ways to balance it between all 24 server cores ?
#2 Updated by Noel Kuntze over 1 year ago
- Category set to configuration
- Status changed from New to Feedback
Configure RSS and RPS. It will improve performance with one SA though. You'd need to have several and balance them over several rx queues and pin them to different cores to increase the performance further and make use of multithreading.