Re: A question regarding isolated cpus and software interrupts

2025-05-30 Thread David Aldrich via lttng-dev
Hi Mathieu Thanks for your reply. > How are the cores isolated on your system (exact kernel command line > options or commands issued) ? There are various degree of fine-tuning > to prevent disturbance from the tick (nohz full), scheduling, and > irqs that can be done explicitly. So depending on

Re: A question regarding isolated cpus and software interrupts

2025-05-30 Thread Mathieu Desnoyers via lttng-dev
On 2025-05-29 14:06, David Aldrich via lttng-dev wrote: Hi My question isn't directly related to lttng but I would welcome some advice. Our Linux application is showing 'blips' whereby there are occasional increases in processing times. This is for a user process that runs on an isolated core.

A question regarding isolated cpus and software interrupts

2025-05-30 Thread David Aldrich via lttng-dev
Hi My question isn't directly related to lttng but I would welcome some advice. Our Linux application is showing 'blips' whereby there are occasional increases in processing times. This is for a user process that runs on an isolated core. Using lttng and TraceCompass I have found that the 'blip'