On Sun, Feb 16, 2020 at 02:06:05PM +0100, Aurelien Jarno wrote:
> On 2020-02-16 03:32, notafile wrote:
> > I've been running into this myself a lot lately and wonder if anything has
> > happened regarding this since 2014, after all it's been six years.
> > I'm surprised so few people seem to be ta
Hi all,
Fedora and Ubuntu [1] have now enabled frame pointers on amd64 by default,
providing a great profiling experience out-of-the-box. I think it may be time
for Debian to reconsider its position here; the performance overhead is very
small and meanwhile this lack of frame pointers is preve
Sorry guys, may be I'm telling well known things but Ubuntu has libc6-prof
package which installs alternative version of libc6 with
no-omit-frame-pointer to /lib/libc6-prof/x86_64-linux-gnu/ . Any who need
to profile his program can use it via LD_LIBRARY_PATH environment variable
while other progra
On Sun, Feb 16, 2020, at 14:15, Florian Weimer wrote:
> Most unwinders should be able to use asynchronous unwind tables, which
> only impact disk size (and the size of VM mappings).
Experience with perf shows orders of magnitude of overhead of DWARF unwinding
over fp based unwinding. The kernel u
* Aurelien Jarno:
>> I've been running into this myself a lot lately and wonder if
>> anything has happened regarding this since 2014, after all it's
>> been six years.
>> I'm surprised so few people seem to be taking interest in this
>> considering the amount of tools that rely on frame pointers
Hi,
On 2020-02-16 03:32, notafile wrote:
> Hi,
>
> I've been running into this myself a lot lately and wonder if anything has
> happened regarding this since 2014, after all it's been six years.
> I'm surprised so few people seem to be taking interest in this considering
> the amount of tools t
Hi,
I've been running into this myself a lot lately and wonder if anything has
happened regarding this since 2014, after all it's been six years.
I'm surprised so few people seem to be taking interest in this considering the
amount of tools that rely on frame pointers for performant stack traces
Hi,
On 2016-03-30 06:37:11 +, Alex Reece wrote:
> I would love to bump this bug; I think it would be wonderful to have an
> alternative version of libc with frame pointers.
Yea, I'm hitting this more and more often. Especially with the new eBPF
backed profiling tools like bcc, which, for the
I would love to bump this bug; I think it would be wonderful to have an
alternative version of libc with frame pointers.
What would it take for such an alternative to exist (can the Debian
alternatives system work for libc)? If other people want this, I'm
interested in investing some time into hel
Source: glibc
Severity: wishlist
Hi,
When profiling with perf (and even oprofile) showing the call graph
can often be invaluable. Unfortunately for anything that goes through
libc that's not efficiently possible as glibc (on at least amd64)
doesn't build with frame pointers enabled.
It is possib
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