linux-kernel - Re: [PATCH 3/3] perf test: Add 30s timeout for wait for daemon start.

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Date:   Thu, 11 Mar 2021 11:37:43 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org, Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 3/3] perf test: Add 30s timeout for wait for daemon start.

On Wed, Mar 10, 2021 at 12:41:18PM -0800, Ian Rogers wrote:
> Retry the ping loop upto 600 times, or approximately 30 seconds, to make
> sure the test does hang at start up.
> 
> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/perf/tests/shell/daemon.sh | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/tools/perf/tests/shell/daemon.sh b/tools/perf/tests/shell/daemon.sh
> index a02cedc76de6..cb831ff2c185 100755
> --- a/tools/perf/tests/shell/daemon.sh
> +++ b/tools/perf/tests/shell/daemon.sh
> @@ -127,9 +127,16 @@ daemon_start()
>  
>  	# wait for the session to ping
>  	local state="FAIL"
> +	local retries=0
>  	while [ "${state}" != "OK" ]; do
>  		state=`perf daemon ping --config ${config} --session ${session} | awk '{ print $1 }'`
>  		sleep 0.05
> +		retries=$((${retries} +1))
> +		if [ ${retries} -ge 600 ]; then
> +			echo "Timeout waiting for daemon to ping"
> +			daemon_exit ${config}
> +			exit 62
> +		fi

so it broke in here for you? ;-) makes sense, please keep
the 'FAILED: ...' prefix so it's obvious it's an error

thanks,
jirka

>  	done
>  }
>  
> -- 
> 2.30.1.766.gb4fecdf3b7-goog
>