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feat(cron): more precise execution report #59965

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6771640
feat(cron): more precise execution report
Altahrim Apr 28, 2026
8ec41d4
feat(cron): add shutdown function to catch fatal errors
Altahrim Apr 28, 2026
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49 changes: 35 additions & 14 deletions core/Service/CronService.php
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@
use OC\Session\Memory;
use OC\User\Session;
use OCP\App\IAppManager;
use OCP\BackgroundJob\IJob;
use OCP\BackgroundJob\IJobList;
use OCP\Files\ISetupManager;
use OCP\IAppConfig;
Expand All @@ -29,6 +30,8 @@
use Psr\Log\LoggerInterface;

class CronService {
private ?IJob $currentJob = null;

/** * @var ?callable $verboseCallback */
private $verboseCallback = null;

Expand Down Expand Up @@ -151,6 +154,21 @@ private function runCli(string $appMode, ?array $jobClasses): void {
}
}

// Try to log and unlock job in case of failure (eg. Allowed memory size exhausted)
register_shutdown_function(function () {
$error = error_get_last();
if ($error === null) {
return;
}

$message = 'Uncatched error when running job ' . $this->currentJob->getId() . ': ' . $error['message'];
$this->logger->error($message);
$this->verboseOutput($message);
if ($this->currentJob instanceof IJob) {
$this->jobList->unlockJob($this->currentJob);
}
});

// We only ask for jobs for 14 minutes, because after 5 minutes the next
// system cron task should spawn and we want to have at most three
// cron jobs running in parallel.
Expand All @@ -159,6 +177,7 @@ private function runCli(string $appMode, ?array $jobClasses): void {
$executedJobs = [];

while ($job = $this->jobList->getNext($onlyTimeSensitive, $jobClasses)) {
$this->currentJob = $job;
if (isset($executedJobs[$job->getId()])) {
$this->jobList->unlockJob($job);
break;
Expand All @@ -167,20 +186,19 @@ private function runCli(string $appMode, ?array $jobClasses): void {
$jobDetails = get_class($job) . ' (id: ' . $job->getId() . ', arguments: ' . json_encode($job->getArgument()) . ')';
$this->logger->debug('CLI cron call has selected job ' . $jobDetails, ['app' => 'cron']);

$timeBefore = time();
$memoryBefore = memory_get_usage();
$memoryPeakBefore = memory_get_peak_usage();

$this->verboseOutput('Starting job ' . $jobDetails);

$startTime = microtime(true);
$referenceMemory = memory_get_usage();
memory_reset_peak_usage();

$job->start($this->jobList);

$timeAfter = time();
$memoryAfter = memory_get_usage();
$memoryPeakAfter = memory_get_peak_usage();
$memoryIncrease = memory_get_usage() - $referenceMemory;
$timeSpent = microtime(true) - $startTime;
$jobMemoryPeak = memory_get_peak_usage() - $referenceMemory;

$cronInterval = 5 * 60;
$timeSpent = $timeAfter - $timeBefore;
if ($timeSpent > $cronInterval) {
$logLevel = match (true) {
$timeSpent > $cronInterval * 128 => ILogger::FATAL,
Expand All @@ -196,13 +214,13 @@ private function runCli(string $appMode, ?array $jobClasses): void {
);
}

if ($memoryAfter - $memoryBefore > 50_000_000) {
$message = 'Used memory grew by more than 50 MB when executing job ' . $jobDetails . ': ' . Util::humanFileSize($memoryAfter) . ' (before: ' . Util::humanFileSize($memoryBefore) . ')';
if ($memoryIncrease > 50 * 1024 * 1024) {
$message = 'Memory leak detected after executing job ' . $jobDetails . '. Memory usage grew by ' . Util::humanFileSize($memoryIncrease) . '.';
$this->logger->warning($message, ['app' => 'cron']);
$this->verboseOutput($message);
}
if ($memoryPeakAfter > 300_000_000 && $memoryPeakBefore <= 300_000_000) {
$message = 'Cron job used more than 300 MB of ram after executing job ' . $jobDetails . ': ' . Util::humanFileSize($memoryPeakAfter) . ' (before: ' . Util::humanFileSize($memoryPeakBefore) . ')';
if ($jobMemoryPeak > 300 * 1024 * 1024) {
$message = 'Cron job used more than 300 MiB of RAM after executing job ' . $jobDetails . ': ' . Util::humanFileSize($jobMemoryPeak) . ')';
$this->logger->warning($message, ['app' => 'cron']);
$this->verboseOutput($message);
}
Expand All @@ -211,16 +229,19 @@ private function runCli(string $appMode, ?array $jobClasses): void {
$this->setupManager->tearDown();
$this->tempManager->clean();

$this->verboseOutput('Job ' . $jobDetails . ' done in ' . ($timeAfter - $timeBefore) . ' seconds');
$this->verboseOutput('Job ' . $jobDetails . ' done in ' . number_format($timeSpent, 2) . ' seconds');

$this->jobList->setLastJob($job);
$executedJobs[$job->getId()] = true;
unset($job);

if ($timeAfter > $endTime) {
if (time() > $endTime) {
break;
}
}

// Makes sure last error isn't catched by shutdown function
error_clear_last();
}

private function runWeb(string $appMode): void {
Expand Down
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