** Also affects: linux-nvidia (Ubuntu Noble)
Importance: Undecided
Status: New
** Changed in: linux-nvidia (Ubuntu)
Status: New => Invalid
** Changed in: linux-nvidia (Ubuntu Noble)
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/2092141
Title:
ETE tracing failure on multi-socket system
Status in linux-nvidia package in Ubuntu:
Invalid
Status in linux-nvidia source package in Noble:
Fix Committed
Bug description:
We got the following error when running perf to trace ETE on multi-socket
systems with more than 108 cpus.
./perf record -e cs_etm//u ls
failed to mmap with 12 (Cannot allocate memory)
The above is per-process monitoring that initiates ETE tracing on all CPUs.
System wide tracing with limited CPUs works, e.g.: perf record -e cs_etm//u
-C 0-108
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