[Bug 1359946] Re: smbd spawns hundreds/thousands of processes
More info: the router logs bandwidth usage information to the same Samba share; it's done that for over a year and a half with no issues. Until now, apparently. I reconfigured the router to write its bandwidth logs to internal flash (had to back off on the write frequency to keep from killing the flash) and unmapped the Samba share it was using for that purpose. The Samba server's not needed any attention over the weekend, and when I logged in a few minutes ago, it reported its current load average as 0.01. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in Ubuntu. https://bugs.launchpad.net/bugs/1359946 Title: smbd spawns hundreds/thousands of processes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1359946/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1359946] Re: smbd spawns hundreds/thousands of processes
...and it turns out the router is not to blame, as when I logged into my server this morning to check on it, top looked something like this: top - 08:38:30 up 1 day, 14:40, 1 user, load average: 874.41, 870.45, 860.30 Tasks: 1050 total, 877 running, 173 sleeping, 0 stopped, 0 zombie %Cpu(s): 13.9 us, 85.6 sy, 0.3 ni, 0.0 id, 0.0 wa, 0.2 hi, 0.0 si, 0.0 st KiB Mem: 3491160 total, 3340508 used, 150652 free, 382332 buffers KiB Swap: 2097148 total,40056 used, 2057092 free. 206400 cached Mem PID USER PR NIVIRTRESSHR S %CPU %MEM TIME+ COMMAND 8 root 20 0 0 0 0 S 4.6 0.0 93:24.75 rcuos/0 9 root 20 0 0 0 0 S 4.6 0.0 107:11.97 rcuos/1 5900 salfter 20 0 25740 2464 1132 R 1.3 0.1 0:00.27 top 2716 salfter 20 0 1400368 85772 2872 S 1.0 2.5 10:05.09 sabnzbdplus 1057 salfter 20 0 280604 5936 3928 R 0.7 0.2 0:50.99 smbd 1940 salfter 20 0 280604 5960 3952 R 0.7 0.2 0:50.51 smbd 2615 salfter 20 0 280004 5852 3868 R 0.7 0.2 2:07.74 smbd 3422 salfter 20 0 280012 5856 3872 R 0.7 0.2 2:06.06 smbd 4002 salfter 20 0 280012 5860 3876 R 0.7 0.2 2:03.86 smbd 4219 salfter 20 0 280012 5864 3880 R 0.7 0.2 2:02.97 smbd 4330 salfter 20 0 279652 5824 3840 R 0.7 0.2 10:41.66 smbd 4553 salfter 20 0 281156 6000 3992 R 0.7 0.2 0:01.40 smbd 4896 salfter 20 0 280012 5860 3876 R 0.7 0.2 2:00.07 smbd 5229 salfter 20 0 280136 5864 3880 R 0.7 0.2 1:58.06 smbd 5351 salfter 20 0 281156 5988 3980 R 0.7 0.2 0:00.46 smbd 5449 salfter 20 0 279696 5844 3860 R 0.7 0.2 7:19.14 smbd 5748 salfter 20 0 280604 5940 3932 R 0.7 0.2 0:43.70 smbd 6203 salfter 20 0 280604 5964 3956 R 0.7 0.2 0:43.20 smbd 6410 salfter 20 0 279652 5824 3840 R 0.7 0.2 6:35.06 smbd 7511 salfter 20 0 279660 5828 3844 R 0.7 0.2 6:01.25 smbd 8540 salfter 20 0 280180 5860 3876 R 0.7 0.2 1:50.95 smbd 9098 salfter 20 0 280180 5892 3908 R 0.7 0.2 1:46.50 smbd 9157 salfter 20 0 280604 5924 3916 R 0.7 0.2 0:38.41 smbd 10018 salfter 20 0 280180 5876 3892 R 0.7 0.2 1:43.70 smbd 10233 salfter 20 0 280180 5888 3904 R 0.7 0.2 1:42.71 smbd 10382 salfter 20 0 279660 5828 3844 R 0.7 0.2 4:54.70 smbd 12170 salfter 20 0 279676 5836 3852 R 0.7 0.2 4:35.70 smbd 12363 salfter 20 0 280180 5868 3884 R 0.7 0.2 1:38.48 smbd 13355 salfter 20 0 280180 5880 3896 R 0.7 0.2 1:33.46 smbd 13907 salfter 20 0 280180 5896 3912 R 0.7 0.2 1:32.28 smbd 15617 salfter 20 0 280708 5956 3952 R 0.7 0.2 0:27.87 smbd 16100 salfter 20 0 280708 5928 3924 R 0.7 0.2 0:27.61 smbd 16320 salfter 20 0 280736 5924 3920 R 0.7 0.2 0:27.66 smbd smbd has spawned 902 processes. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in Ubuntu. https://bugs.launchpad.net/bugs/1359946 Title: smbd spawns hundreds/thousands of processes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1359946/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1359946] Re: smbd spawns hundreds/thousands of processes
I think the recent change that caused this problem was where I told my router (a WRT54GL running Tomato) to start writing logfiles to a Samba share. greyhole --logs reported that the logfile was being held open. I turned off logging, rebooted the router, stopped Samba, made sure all its processes were dead (and that lsof no longer reported the logfile as being held open), and restarted Samba. Where the smbd process count would've previously gone up at a steady pace with many of them trying to take 100% CPU, the process count is now staying relatively low (about equal to the number of shares it's serving up) and the load average is staying low (currently 0.00). So now we know what's causing the problem and how to keep it from happening, but why is it a problem? Files held open by clients shouldn't cause this problem. Transmission, for instance, can keep downloaded files open for days or weeks at a time, but this only became a problem when I told my router to start writing logfiles. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in Ubuntu. https://bugs.launchpad.net/bugs/1359946 Title: smbd spawns hundreds/thousands of processes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1359946/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1359946] Re: smbd spawns hundreds/thousands of processes
More info: the router logs bandwidth usage information to the same Samba share; it's done that for over a year and a half with no issues. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in Ubuntu. https://bugs.launchpad.net/bugs/1359946 Title: smbd spawns hundreds/thousands of processes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1359946/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
