On Tue, Dec 26, 2017 at 10:29:34AM +0800, 禹舟键 wrote:
> Hi, Jirka
> This issue happens always. The perf is running on the host machine and the
> command line is as follow:
>
> $perf record -ag -F 100
>
> But I do not find anything about race condition from the call stack in gdb.
> The on
On Mon, Dec 25, 2017 at 07:56:43AM +0100, ufo19890607 wrote:
> From: yuzhoujian
>
> #0 0x7f044ff447bd in re_compile_fastmap_iter (bufp=0x7f044ff447bd
> ,
> fastmap=0x46 ,
> init_state=, init_state=) at regcomp.c:407
> 407 if (__wcrtomb (buf, towlo
Have you tried updating your kernel to a recent version?
On 2017/12/25 14:58, ufo19890607 wrote:
From: yuzhoujian
I use perf to analyze the performance overhead for the server.
There are several dockers in the server. The php-fpm in the docker
will crash as long as the perf collects samples f
From: yuzhoujian
I use perf to analyze the performance overhead for the server.
There are several dockers in the server. The php-fpm in the docker
will crash as long as the perf collects samples for all the cpus with call
graph option(perf record -ag). Below is the stack trace
in the coredump.
From: yuzhoujian
#0 0x7f044ff447bd in re_compile_fastmap_iter (bufp=0x7f044ff447bd
,
fastmap=0x46 ,
init_state=, init_state=) at regcomp.c:407
407 if (__wcrtomb (buf, towlower (cset->mbchars[i]),
&state)
(gdb) bt
#0 0x7f0
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