MongoDB PHP findAndModify多种性能

Question

I have a documents in a collection called Reports that are to be processed. I do a query like

$collectionReports->find(array('processed' => 0)) 

(anywhere between 50 and 2000 items). I process them how I need to and insert the results into another collection, but I need to update the original Report to set processed to the current system time. Right now it looks something like:

$reports = $collectionReports->find(array('processed' => 0));
$toUpdate = array();
foreach ($reports as $report) {
    //Perform the operations on them now
    $toUpdate = $report['_id'];
}
foreach ($toUpdate as $reportID) {
    $criteria = array('_id' => new MongoId($reportID));
    $data = array('$set' => array('processed' => round(microtime(true)*1000)));
    $collectionReports->findAndModify($criteria, $data);
}

My problem with this is that it is horribly inefficient. Processing the reports and inserting them into the collection takes maybe 700ms for 2000 reports, but just updating the processed times takes at least 1500ms for those same 2000 reports. Any tips to speed this up? Thanks in advance.

EDIT: The processed time doesn't have to be exact, it can just be the time the script is ran (+/- 10 seconds or so), if it would be possible to take the object ($report) and update the time directly like that, it would be better than just searching after the first foreach.

Answer 1

感谢Sammaye，从findAndModify（）更改为update（）似乎更好，更快。