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Port improved pt-pmp

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- Updated documentation for pt-eustack-resolver and pt-pmp
- Added pt-eustack-resolver, pt-pmp and other missed tools into docs/percona-toolkit.pod
- Removed quickstack support from pt-pmp. We do not need to port this
  improvement, because quickstack is not actively developed and does not
  create useful stack traces for Percona Server for MySQL 8.0.
This commit is contained in:
Sveta Smirnova
2024-01-18 02:57:03 +03:00
parent 56eea61dae
commit 83ba87cc0c
3 changed files with 67 additions and 19 deletions
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22
bin/pt-eustack-resolver
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@@ -113,16 +113,20 @@ foreach $lwp (sort {$a<=>$b} keys %sf)
# ############################################################################
# Documentation
# ############################################################################
=pod
=head1 NAME
pt-eustack-resover - Get stack traces for a selected program with eu-stack and resolve symbols
pt-eustack-resolver - Get stack traces for a selected program with C<eu-stack>
and resolve symbols.
=head1 SYNOPSIS
Usage: pt-eustack-resolver <pid>
pt-eustack-resolver collects stack traces for the process with specified C<pid>.
=head1 RISKS
Percona Toolkit is mature, proven in the real world, and well tested,
@@ -143,17 +147,17 @@ server. Before using this tool, please:
=head1 DESCRIPTION
pt-eustack-resover is the tool that gets stack traces for a selected program
with eu-stack and resolves symbols. This is companion tool for L<pt-pmp>, called
when option --dumper=pteu is specified.
pt-eustack-resolver is the tool that gets stack traces for a selected program
with C<eu-stack> and resolves symbols. This is companion tool for L<pt-pmp|pt-pmp.html>, called
when option C<--dumper=pteu> is specified.
eu-stack is a tool from elfutils package that prints a stack for each thread in
a process or core file. eu-stack is faster than gdb and smaller overhead on the
diagnosed process.
C<eu-stack> is a tool from L<elfutils|https://sourceware.org/elfutils> package that
prints a stack for each thread in a process or core file. C<eu-stack> is faster
than gdb and have smaller overhead on the diagnosed process.
=head1 OUTPUT
Stack for each thread, formatted similarly to `gdb thread apply all bt` output.
Stack for each thread, formatted similarly to C<gdb thread apply all bt> output.
=head1 ATTENTION
@@ -162,7 +166,7 @@ parameters are shown in the output.
=head1 SYSTEM REQUIREMENTS
You need eu-stack from the elfutils package.
You need C<eu-stack> from the L<elfutils|https://sourceware.org/elfutils> package.
=head1 BUGS

34
bin/pt-pmp
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@@ -619,7 +619,7 @@ aggregate_stacktrace() {
}
}
}
if ( dumper ~ /gdb/ || dumper ~ /qs/ ) {
if ( dumper ~ /gdb/ ) {
targ = substr(\$0, index(\$0, \" in \") + 4);
if ( targ ~ / from / ) {
targ = substr(targ, 1, index(targ, \" from \") - 1);
@@ -735,14 +735,8 @@ main() {
else
die "Can't find eu-stack binary from elfutils or pt-eustack-resolver. Exiting"
fi
elif [ $OPT_DUMPER == "qs" ]; then
if [ `_which quickstack` ]; then
quickstack -l -f -p $OPT_PID >> "$output_file"
else
die "Can't find quickstack binary from https://github.com/yoshinorim/quickstack. Exiting"
fi
fi
date +'TS %N.%s %F %T' >> "$output_file"
sleep $OPT_INTERVAL
done
@@ -851,7 +845,7 @@ Which binary to trace.
short form: -d; type: string; default: gdb
Which dumper use to get stack traces(gdb: gdb, eu: eu-stack, pteu: pt-eustack-resolver, qs: quickstack).
Which dumper use to get stack traces(gdb: gdb, eu: eu-stack, pteu: pt-eustack-resolver).
=item --tids
@@ -859,6 +853,28 @@ short form: -t; type: string; default: *
Extract traces only for specific tids.
This option uses regular expressions to select threads. For example, if the
collected stack trace has data for threads:
[New Thread 0x52173940 (LWP 23846)]
[New Thread 0x52132940 (LWP 23845)]
[New Thread 0x520f1940 (LWP 23844)]
[New Thread 0x520b0940 (LWP 23798)]
[New Thread 0x5206f940 (LWP 23776)]
[New Thread 0x5202e940 (LWP 23775)]
[New Thread 0x51fed940 (LWP 23774)]
[New Thread 0x51fac940 (LWP 23728)]
[New Thread 0x51f6b940 (LWP 23727)]
[New Thread 0x51f2a940 (LWP 21264)]
[New Thread 0x51ee9940 (LWP 21263)]
[New Thread 0x51ea8940 (LWP 21201)]
C<-t 21> will print stack traces for threads 21264, 21263, 21201
C<-t 21201,23846> will print stack traces for threads 21201, 23846
C<-t 21201,237.8> will print stack traces for threads 21201, 23798, 23728
=item --help
Show help and exit.