Ubuntu
linux package

  1. Bionic (18.04)
  2. Bug #1730782
  3. Comment #0

Comment 0 for bug 1730782

Revision history for this message
quanxian (quanxian-wang) wrote :

Description:

Workload slows down for default sampling cycles in KNL. There are some processing in perf that's single threaded and bottlenecked when number of cores really go up.
A second issue is that things slow down when we issue
perf record – workload
vs
perf record -a – workload

Patch is submitted for review

https://www.spinics.net/lists/kernel/msg2552460.html
https://www.spinics.net/lists/kernel/msg2552461.html
https://www.spinics.net/lists/kernel/msg2552462.html
https://www.spinics.net/lists/kernel/msg2552463.html

Target kernel: TBD
Target Release: 18.04