is there any safer solution
Hold on... I'll check the web if there's a safer solution.
1 Like
This might something you that looks promising: Limit memory usage for a single Linux process - Unix & Linux Stack Exchange
is this Good to try ?
Another way to limit this is to use Linux's control groups. This is especially useful if you want to limit a process's (or group of processes') allocation of physical memory distinctly from virtual memory. For example:
cgcreate -g memory:myGroup
echo 500M > /sys/fs/cgroup/memory/myGroup/memory.limit_in_bytes
echo 5G > /sys/fs/cgroup/memory/myGroup/memory.memsw.limit_in_bytes
will create a control group named myGroup, cap the set of processes run under myGroup up to 500 MB of physical memory with memory.limit_in_bytes and up to 5000 MB of physical and swap memory together with memory.memsw.limit_in_bytes. More info about these options can be found here: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/resource_management_guide/sec-memory
To run a process under the control group:
cgexec -g memory:myGroup pdftoppm
Note that on a modern Ubuntu distribution this example requires installing the cgroup-bin package and editing /etc/default/grub to change GRUB_CMDLINE_LINUX_DEFAULT to:
GRUB_CMDLINE_LINUX_DEFAULT="cgroup_enable=memory swapaccount=1"
and then running sudo update-grub and rebooting to boot with the new kernel boot parameters.
Looks good in my eye, but you might wait for a second opinion for safty, as I have no intention to test on my machine. I still think it's a bad idea to mess the OS memory allocations system, but that's just my opinion. 
1 Like
thank You very much, @Storm
Btw I found this on the web
swap - How do I configure swappiness? - Ask Ubuntu
A swappiness setting of zero means that the disk will be avoided unless absolutely necessary (you run out of memory), while a swappiness setting of 100 means that programs will be swapped to disk almost instantly. -In topic
That's good found. I suggest you try that first, as it's easier to reverse if it goes wrong.
1 Like
So my current swappiness is 60 and it's using 500Mb while rider is active,
I should make to 100 directly or something else
100 is to extreme try 80 first.
1 Like
in terminal it shows 80
and
when i open it in text it shows 15
sudo nano /proc/sys/vm/swappiness
remember to reboot.
Does it work as expected?
No now using 77%Ram and 268mb swap
Also software runs with too much lag
Sad to hear that. Seems JB's rider is a resource hog, or memory leak perhaps?
Now What To DO????
I'm not sure, buy more RAM 
Perhaps another member would like to share their input on this matter.
1 Like
4GB of RAM is really not enough anymore for any serious work. As you've witnessed first hand, some APPS just use more RAM then you would expect. Take GIMP for example, if I only had 4GB of RAM, I can kiss editing 5K RAW photo's goodbye. And I wouldn't be able to even edit 1080P video let alone 1400P or 4K.
So, I have to agree with Storm, its time to upgrade your RAM. Without knowing more about your computer, I have no way of knowing weather your computer uses desktop RAM, or notebook RAM, it depends on what kind of machine you have.
If you post the model of your computer, I may be able to help you find more RAM for your machine.
1 Like
Hp ProBook 450G
According to Memory Stock, your HP 450 Probook has two RAM slots, and it can accept a maximum of 16GB of RAM.
ProBook 450 G4 Memory Upgrade - HP 450 G4 ProBook Laptop Memory.
This is excellent for you, because it means the RAM isn't soldered to the mobo. Since your notebook comes with 2-slots, it means you can run RAM in dual channel, to achieve the highest level of performance.
That is a listing for a 2x8GB kit. Amazon has an excellent return policy, if it doesn't work, you can return it. But these RAM chips are getting more rare as time goes on. I was trying to search for other brands that are more well known like Corsair, but they only had a single 16GB stick with a heat spreader that might be too big to fit a thin and lite notebook.
You don't want to run in single channel mode, as its slower. And like I said, a heat spreader is nice for dissipating heat and all. But they typically won't fit in thin and lites. So, I chose RAM sticks without heat spreaders. Hopefully this helps...
Video to show you how to RAM upgrade your notebook model!
1 Like