On 11/8/22 18:46, Frank Ch. Eigler wrote: > Demi Marie Obenour <demioben...@gmail.com> writes: > >> Three other options I can think of: >> [...] > > Another one: > > 4. Speed up out-of-context backtracer(s), possibly consuming > kernel-perf-ringbuffer stack dumps, or possibly using another > event source to trigger and work via ptrace and /proc/$pid/mem > > - FChE
Kernel stack dumps will not work for programs (such as OCaml 5.0) that use segmented stacks. A userspace ptracer might work if it is only woken up when absolutely necessary, but I suspect it would be slow due to syscall overhead. That is why I suggested the vDSO dumper: it would run from the process’s own context. -- Sincerely, Demi Marie Obenour (she/her/hers) _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
