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MDEV-23787 mtr --rr fixes

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1. rr record -h randomizes number of processors. Disable THREAD_POOL_SIZE check.

2. check for kernel.perf_event_paranoid for user-friendly error message.
This commit is contained in:
Aleksey Midenkov
2020-10-06 15:07:06 +03:00
parent 5933081d8b
commit 2b832151ad
3 changed files with 14 additions and 3 deletions
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10
mysql-test/mysql-test-run.pl
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@ -1820,6 +1820,16 @@ sub command_line_setup {
$opt_shutdown_timeout= 24 * 60;
# One day for PID file creation (this is given in seconds not minutes)
$opt_start_timeout= 24 * 60 * 60;
if ($opt_rr && open(my $fh, '<', '/proc/sys/kernel/perf_event_paranoid'))
{
my $perf_event_paranoid= <$fh>;
close $fh;
chomp $perf_event_paranoid;
if ($perf_event_paranoid == 0)
{
mtr_error("rr requires kernel.perf_event_paranoid set to 1");
}
}
}
# --------------------------------------------------------------------------