OK, results are a bit mixed. I'll summarize again. I've tested suspend/resume cycles on a fresh boot, running at ~50% memory load: 1) mainline (3.7.0-030700rc5), unity-2D: no apparent problems 2) latest kernel (3.2.0-33-generic #52-Ubuntu), unity-2D: no apparent problems 3) latest kernel (3.2.0-33-generic #52-Ubuntu), unity-3D: one slow resume at 10th cycle (OK before and after). 4) previous kernel (3.2.0-32-generic #51-Ubuntu), unity-3D: slow resume at 5th cycle (OK before, didn't test after).
After a slow resume, I always see a strong increase in swap usage (e.g., from ~1M to 0.5-1G), while mem usage goes down by the same amount (so, apparently, things got shifted to swap). This is al with ~50% memory usage, so strictly no need at all to push stuff to swap. I did not test mainline with unity-3D, because it fell back to unity-2D. My tentative conclusions: - I cannot reproduce the problem under unity-2D (10 snappy resumes in a row) - I could not reproduce the problem running mainline and unity-2D - latest Ubuntu kernel seems to alleviate the problem. This is all with swappyness 10, I haven't tried the default (60), should I? I'm not sure if I should remove needs-upstream-testing and/or add kernel-unable-to-test-upstream tags. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1078038 Title: excessive swapping on resume renders laptop useless 20% of the time To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1078038/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
