I am on xbuntu 15.10 and this affected me after I upgraded. I have 16GB ram and kswapd kicks in, locks it up for 10 - 30 seconds multiple times an hour. vmstat 5 shows:
1 0 1208112 569056 69376 7019032 0 0 84 347 1634 2951 25 1 73 0 0 2 0 1208072 164192 2212 6619100 14 6 163 10 2177 5029 26 3 70 0 0 0 20 2366584 204456 316 6367792 48 234926 25103 235206 6928 2748 2 8 5 86 0 1 5 3294060 151216 548 6413108 27001 193908 88306 193970 5196 6590 2 10 13 76 0 2 1 4065264 172748 3172 6488812 72246 163202 106635 163531 8388 11018 2 22 43 33 0 5 0 4806852 136160 4444 6469352 76391 153371 98650 154074 8352 9759 2 26 37 35 0 1 1 5573372 145112 816 6440936 73558 157316 87340 157662 6802 8592 2 21 44 33 0 0 4 6383744 168976 1800 6463780 74014 166143 88715 166679 6388 8669 2 27 41 31 0 1 1 7024704 146832 1924 6466112 68409 135974 78778 136382 6356 8203 1 19 42 38 0 2 0 7736084 181116 1928 6476672 56372 144775 64527 145122 8093 6853 1 16 41 43 0 0 7 8381188 197892 432 6456988 74326 159450 87829 160040 8327 8744 4 23 45 28 0 1 0 3944136 3240020 1400 6488888 9170 67 14278 74 2112 4084 22 3 69 6 0 1 0 3926636 2819400 2060 6521132 3596 0 7028 0 1848 3374 25 3 71 1 0 So you can see when it kicks in. I have made the following modifications and still have the problem: /etc/sysctl.conf: vm.swappiness=10 /etc/rc.local: # Fix khugepaged issues (20150706) echo never > /sys/kernel/mm/transparent_hugepage/defrag echo 0 > /sys/kernel/mm/transparent_hugepage/khugepaged/defrag # Another fix for khugepaged issues (20151210) echo madvise > /sys/kernel/mm/transparent_hugepage/enabled -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1476211 Title: kswapd takes 100% CPU although there is no swap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1476211/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
