UrbackupClient memory usage

client
#1

Hello,

I have urbackup 2.4 setup with several clients. It works well. That’s a very nice app.
I face a difficulty on one of my client.
During backup, memory call is going so high that it pushes data to swap.
Let see below my munin graph

image
image747×648 125 KB

The blue line above is committed.
Is there any solution to decrease that memory consuption ?

#2

Hello @francoisPE,

I solved this by editing /usr/lib/systemd/system/urbackupclientbackend.service

[Service]
ExecStart=/usr/local/sbin/urbackupclientbackend --config /etc/default/urbackupclient --no-consoletime
User=root
MemoryAccounting=true
MemoryHigh=2G
MemoryMax=3G
MemorySwapMax=512M

After this run

systemctl daemon-reload
systemctl restart urbackupclientbackend.service

Change the settings according to your needs.

Best

Knut

#3

I set it up !
That’s very nice.
I gonna propose a PR
FrançoisPE

#4

I propose that code for an automatic change

TOTAL_PHYSICAL_MEM=$(awk '/^MemTotal:/ {print $2}' /proc/meminfo)
TOTAL_SWAP=$(awk '/^SwapTotal:/ {print $2}' /proc/meminfo)
file=/usr/lib/systemd/system/urbackupclientbackend.service
cp $file $file"_bak"
gawk -v memkb=$TOTAL_PHYSICAL_MEM -v swapkb=$TOTAL_SWAP '{ if ($0 ~ /User=root/){printf("User=root\nMemoryAccounting=true\nMemoryHigh=%.0fG\nMemoryMax=%.0fG\nMemorySwapMax=%.0fM\n",memkb*40/100/(1024*1024),memkb*60/100/(1024*1024),swapkb*15/100/1024)} else {print $0}}' < $file"_bak" > $file
rm -f $file"_bak*"
systemctl daemon-reload
service urbackupclientbackend restart
#5

It shouldn’t use that much memory. If it does it would be helpful if you:

  1. Either compile from sources or install debug symbols
  2. Install heaptrack and run with heaptrack /usr/local/sbin/urbackupclientbackend --config /etc/default/urbackupclient --no-consoletime
  3. Send me the heaptrack result (that tells where in the program how much memory was allocated)