** Description changed: Under heavy workload conditions cups can reach irrationally high memory consumption very quickly (tens of GBs). Test case: 1. Set MaxJobs to 40000 in cupsd.conf. 2. sudo apt install cups-pdf 3. Fill the queue with jobs: while [ 1 ]; lp -d PDF /usr/share/cups/data/default.pdf; done 4. Cancel all jobs cancel -a PDF 5. Restart cups. 6. Start filling the queue again (as in step 3). Expected result: Jobs are processed and memory consumption is proportional to the number of jobs. Actual result: - After step 5 or at latest step 6 memory consumption starts to increase exponentially - from ~150-200 MB to 8+GB. Without foreseeing this it's very easy to get cups killed by OOM killer. + After step 5 or at latest step 6 memory consumption starts to increase exponentially - from ~150-200 MB to 8+GB. Without foreseeing this it's very easy to get cupsd killed by OOM killer.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1831021 Title: Extremely high memory consumption under heavy workload Status in cups package in Ubuntu: New Bug description: Under heavy workload conditions cups can reach irrationally high memory consumption very quickly (tens of GBs). Test case: 1. Set MaxJobs to 40000 in cupsd.conf. 2. sudo apt install cups-pdf 3. Fill the queue with jobs: while [ 1 ]; lp -d PDF /usr/share/cups/data/default.pdf; done 4. Cancel all jobs cancel -a PDF 5. Restart cups. 6. Start filling the queue again (as in step 3). Expected result: Jobs are processed and memory consumption is proportional to the number of jobs. Actual result: After step 5 or at latest step 6 memory consumption starts to increase exponentially - from ~150-200 MB to 8+GB. Without foreseeing this it's very easy to get cupsd killed by OOM killer. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1831021/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
