6 calls to timer_start()

BootstrapTimerTestCase::testTimer in modules/simpletest/tests/bootstrap.test
Test timer_read() to ensure it properly accumulates time when the timer started and stopped multiple times.
DrupalHTTPRequestTestCase::testDrupalHTTPRequest in modules/simpletest/tests/common.test
drupal_cron_run in includes/common.inc
Executes a cron run when called.
drupal_http_request in includes/common.inc
Performs an HTTP request.
_batch_process in includes/batch.inc
Processes sets in a batch.
_drupal_bootstrap_configuration in includes/bootstrap.inc
Sets up the script environment and loads settings.php.

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