minidlnad uses all CPU Time

aequus · ‎2014-02-16

Hi,

I have a Ultra 4 Plus with 4 GB RAM and 4x4TB HDs in use and with the final versions 6.1.6. Under certain conditions some moduls (acutual minidlnad) uses more and more CPU at a certain level I can no longer access the Webgui and have to reboot the system by telnet or power cut. Now the gui was acceaable and stopping and restarting ReadyDLNA services brings the load to normal values.

It seems that the problem occours when temporary the load level went above a certain load avarege I assume it happens during the daily backup to my other Readynas over the night. Although the transfer caused the high load is done it never came back to the normal level below one.

top - 16:49:43 up 5 days, 4:22, 1 user, load average: 2.09, 2.33, 2.67
Tasks: 197 total, 1 running, 196 sleeping, 0 stopped, 0 zombie
%Cpu(s): 7.3 us, 7.3 sy, 24.4 ni, 60.4 id, 0.6 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 4040688 total, 3042084 used, 998604 free, 216 buffers
KiB Swap: 1047420 total, 1704 used, 1045716 free, 2009028 cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2184 root 20 0 156m 37m 2260 S 101.1 0.9 88:06.47 minidlnad

A week before I had the some issue with the readynasd service

Before reboot:
top - 10:24:50 up 13:25, 1 user, load average: 6.95, 7.30, 8.10
Tasks: 310 total, 2 running, 308 sleeping, 0 stopped, 0 zombie
%Cpu(s): 3.4 us, 24.5 sy, 0.0 ni, 72.0 id, 0.0 wa, 0.0 hi, 0.2 si, 0.0 st
KiB Mem: 4040688 total, 3797816 used, 242872 free, 216 buffers
KiB Swap: 1047420 total, 0 used, 1047420 free, 2996196 cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2312 root 19 -1 8421m 41m 2564 R 97.1 1.1 55:33.71 readynasd

After reboot:
top - 10:52:16 up 17 min, 1 user, load average: 0.92, 0.89, 0.69
Tasks: 178 total, 1 running, 177 sleeping, 0 stopped, 0 zombie
%Cpu(s): 4.0 us, 4.5 sy, 0.0 ni, 87.6 id, 3.6 wa, 0.0 hi, 0.3 si, 0.0 st
KiB Mem: 4040688 total, 2536452 used, 1504236 free, 2528 buffers
KiB Swap: 1047420 total, 0 used, 1047420 free, 2141908 cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2122 root 19 -1 489m 38m 6732 S 0.3 1.0 0:15.45 readynasd