We just installed a new Zentyal server. It has 8Gb of ram, not a huge amount but it is only serving 5 -6 people maximum. On boot up it uses 1.7Gb.
We copied in files from the old server and had long pauses and I tracked the issue down to the Zentyal server. It had a top value of 128 , 115, 87 and no those are not typos - the load was 128.0 current, 115.0 5 minutes and 87.0 in the last minute. Memory usage was also through the roof with 7.9Gb ram allocated and swap file / cache in use for over 1Gb of swap.
The major culprit seemed to be samba.
We crashed the server (it was unresponsive), restarted and checked again. Again 1.7Gb on startup. Copied more files and again up to 7.9Gb ram used with some swap in play. Only four people on the server. I turned off antivirus checking and a few other services. We have had no Top load over 0.5 (this is a 4 Core CPU)
I see from historical posts and bugs Samba and high usage seems to be a recurring theme. We are really not wanting to risk another crash like we saw today. There are a lot of tight deadlines coming up. We do run another Zentyal server (it was commercial but after a couple of appalling lack of support issues with the parent company we decided not to pay them any more). It is on Ubuntu 12.04, 16Gb ram and using 95% of it but runs stable.
This version 4.2.2 .
top - 20:49:34 up 4:30, 2 users, load average: 0.10, 0.09, 0.06
Tasks: 174 total, 1 running, 172 sleeping, 0 stopped, 1 zombie
%Cpu(s): 3.1 us, 1.3 sy, 0.0 ni, 95.3 id, 0.3 wa, 0.0 hi, 0.1 si, 0.0 st
KiB Mem: 8032656 total, 7801008 used, 231648 free, 293580 buffers
KiB Swap: 16485372 total, 43500 used, 16441872 free. 5982484 cached Mem
Is it normal to see many samba threads and 05% of Ram in play?
Cheers
shane
Topic: Samba - High memory usage (Read 7722 times)