https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684
--- Comment #11 from Jan Hubicka ---
*** Bug 86404 has been marked as a duplicate of this bug. ***
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684
Jan Hubicka changed:
What|Removed |Added
Blocks||120867
CC|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684
--- Comment #9 from Martin Sebor ---
Andi, we keep seeing intermittent failures in these tests. Can you help?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684
--- Comment #8 from andi at firstfloor dot org ---
> The log shows the same errors:
> spawn [open ...]
> Permission error mapping pages.
> Consider increasing /proc/sys/kernel/perf_event_mlock_kb,
> or try again with a smaller value of -m/--mmap_p
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684
--- Comment #7 from Martin Sebor ---
It doesn't look like r247962 resolves the failures. I continue to see them
with the top of trunk.
$ nice make -C /opt/notnfs/msebor/build/gcc-77671/gcc -j56
RUNTESTFLAGS='tree-prof.exp' check-c 2>&1 | grep F
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684
--- Comment #6 from ak at gcc dot gnu.org ---
Author: ak
Date: Fri May 12 10:09:50 2017
New Revision: 247962
URL: https://gcc.gnu.org/viewcvs?rev=247962&root=gcc&view=rev
Log:
Limit perf data buffer during profiling
With high -j parallelism the
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684
--- Comment #5 from Andi Kleen ---
Created attachment 41337
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41337&action=edit
limit perf buffer size
This patch allows parallelism upto 16 with the default setting.
Currently testing
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684
--- Comment #4 from Andi Kleen ---
Thanks for tracing that down.
So perf runs out of memory for the locked trace buffers
Increasing the limit is a good workaround
ulimit -l may also work, but also needs root.
We could just pass a smaller -m v
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684
Marek Polacek changed:
What|Removed |Added
CC||mpolacek at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684
Alexander Monakov changed:
What|Removed |Added
CC||amonakov at gcc dot gnu.org,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77684
Martin Sebor changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed|
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