Showing a notice before the benchmark

[tillkruss]

Is there any mechanism to show a colonized notice/warning once before executing any test?

[dantleech]

Not sure what you mean? What's the use case?

[tillkruss]

For example our benchmarks are heavily skewed if New Relic is enabled. I was thinking of showing a warning.

[dantleech]

Not really, you can add an "environment" sampler to add some env data which you could use in a Report:

https://github.com/phpbench/phpbench/blob/master/lib/Environment/Provider/Php.php

[dantleech]

and you could add a custom progress logger that could show a warning, but maybe overkill (the env data is in $suite):

phpbench/lib/Progress/Logger/PhpBenchLogger.php

Lines 65 to 70 in 236a040

	$this->output->writeln(sprintf(
	'with PHP version %s, xdebug %s, opcache %s',
	$summary->getPhpVersion() ?? '<unknown>',
	$summary->getXdebugEnabled() ? '✔' : '❌',
	$summary->getOpcacheEnabled() ? '✔' : '❌'
	));

[dantleech]

and you could add a custom progress logger that could show a warning, but maybe overkill (the env data is in $suite):

phpbench/lib/Progress/Logger/PhpBenchLogger.php

Lines 65 to 70 in 236a040

	$this->output->writeln(sprintf(
	'with PHP version %s, xdebug %s, opcache %s',
	$summary->getPhpVersion() ?? '<unknown>',
	$summary->getXdebugEnabled() ? '✔' : '❌',
	$summary->getOpcacheEnabled() ? '✔' : '❌'
	));

[dantleech]

and you could add a custom progress logger that could show a warning, but maybe overkill (the env data is in $suite):

phpbench/lib/Progress/Logger/PhpBenchLogger.php

Lines 65 to 70 in 236a040

	$this->output->writeln(sprintf(
	'with PHP version %s, xdebug %s, opcache %s',
	$summary->getPhpVersion() ?? '<unknown>',
	$summary->getXdebugEnabled() ? '✔' : '❌',
	$summary->getOpcacheEnabled() ? '✔' : '❌'
	));

[tillkruss]

That is a bit overkill.

Any chance you want to add New Relic to the Xdebug/Opcache list? It has a significant performant impact when running benchmarks.

[dantleech]

Maybe , although needs more thought. What is there is a bit hacky, and wouldn't want to show "New Relic" on each run as we with XDebug/OPCache.