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| author | Tony Garnock-Jones <tonyg@leastfixedpoint.com> | 2021-09-16 14:09:39 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-10-04 14:29:07 +0200 |
| commit | be8ecc57f180415e8a7c1cc5620c5236be2a7e56 (patch) | |
| tree | ff580864e971a6a30ec8312f346ce6c705aa318c /Documentation | |
| parent | perf tests vmlinux-kallsyms: Ignore hidden symbols (diff) | |
| download | linux-be8ecc57f180415e8a7c1cc5620c5236be2a7e56.tar.xz linux-be8ecc57f180415e8a7c1cc5620c5236be2a7e56.zip | |
perf srcline: Use long-running addr2line per DSO
Invoking addr2line in a separate subprocess, one for each required
lookup, takes a terribly long time.
This patch introduces a long-running addr2line process for each DSO,
*DRAMATICALLY* speeding up runs of perf.
What used to take tens of minutes now takes tens of seconds.
Debian bug report about this issue:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911815
Signed-off-by: Tony Garnock-Jones <tonyg@leastfixedpoint.com>
Tested-by: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210916120939.453536-1-tonyg@leastfixedpoint.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions