trace-cmd commit 
 
commit e7ffcbda9d62855ec30dc36ef5bebcb669321073
Author: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Date:   Wed Jun 2 11:08:03 2021 +0200
 
    trace-cmd: Add option to poll trace buffers
 

Avoids the following events on isolated CPUs:

trace-3.dat:           <idle>-0     [001] dNh4. 84221.332994: ipi_send_cpu:         cpu=1 callsite=irq_work_queue+0x2f callback=rb_wake_up_waiters+0x0
trace-3.dat:           <idle>-0     [001] dNh4. 84221.332995: write_msr:            83f, value f6
trace-3.dat:           <idle>-0     [001] dNh1. 84221.332995: reschedule_exit:      vector=253
trace-3.dat:           <idle>-0     [001] dNh1. 84221.332997: irq_work_entry:       vector=246
trace-3.dat:           <idle>-0     [001] dNh1. 84221.333000: irq_work_exit:        vector=246
trace-3.dat:           <idle>-0     [001] dN.2. 84221.333001: hrtimer_start:        hrtimer=0xff2809586f8643d0 function=tick_nohz_highres_handler/0x0 expires=83106538000000 softexpires=83106538000000
  trace.dat:        CPU 1/KVM-3811  [012] d..1. 84221.333011: kvm_exit:             reason MSR_WRITE rip 0xfff0 info ffcc 0
  trace.dat:        CPU 1/KVM-3811  [012] d..1. 84221.333019: kvm_entry:             vcpu 1 rip 0xfff0

However this is not passed down to trace-cmd-agent currently.