Ubuntu 16.04 with no swap freezes when running out of memory
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I have an up-to-date 16.04 64bit system with 24GB of memory, configured without swap. Sometimes due to the nature of my work (multiple VirtualBox VMs running, Eclipse running, Firefox and Chrome running etc) my system runs out of memory and instead of killing the processes with the larger memory footprint it just freezes and becomes unusable and then I have to hard reboot. Why is this the case?
16.04 swap memory-usage
asked Mar 13 at 10:05
Tryfon Farmakakis
111
add a comment |Â
up vote
2
down vote
favorite
1
I have an up-to-date 16.04 64bit system with 24GB of memory, configured without swap. Sometimes due to the nature of my work (multiple VirtualBox VMs running, Eclipse running, Firefox and Chrome running etc) my system runs out of memory and instead of killing the processes with the larger memory footprint it just freezes and becomes unusable and then I have to hard reboot. Why is this the case?
16.04 swap memory-usage
asked Mar 13 at 10:05
Tryfon Farmakakis
111
I think that, even if you have 24GB or RAM, you need at least 5 GB of RAM (in my opinion the best would be 24GB). Maybe there is a problem with swapiness... if you run in a terminal as root the command:sysctl vm.swappinesswhat it returns?
– LilloX
Mar 13 at 10:16
It returns: vm.swappiness = 60
– Tryfon Farmakakis
Mar 13 at 11:14
You can try, as root, to executesysctl vm.swappiness=0. This disable the swap, maybe the system try to allocate the swap even if there is not...
– LilloX
Mar 13 at 11:18
Nope, this didn't change anything, as expected since I don't have any swap file as I explained before.
– Tryfon Farmakakis
Mar 14 at 13:30
@TryfonFarmakakis did you find a solution? could you help me?
– Soorena
Apr 10 at 9:10
add a comment |Â
up vote
2
down vote
favorite
1
up vote
2
down vote
favorite
1
1
I have an up-to-date 16.04 64bit system with 24GB of memory, configured without swap. Sometimes due to the nature of my work (multiple VirtualBox VMs running, Eclipse running, Firefox and Chrome running etc) my system runs out of memory and instead of killing the processes with the larger memory footprint it just freezes and becomes unusable and then I have to hard reboot. Why is this the case?
16.04 swap memory-usage
asked Mar 13 at 10:05
Tryfon Farmakakis
111
I have an up-to-date 16.04 64bit system with 24GB of memory, configured without swap. Sometimes due to the nature of my work (multiple VirtualBox VMs running, Eclipse running, Firefox and Chrome running etc) my system runs out of memory and instead of killing the processes with the larger memory footprint it just freezes and becomes unusable and then I have to hard reboot. Why is this the case?
16.04 swap memory-usage
16.04 swap memory-usage
asked Mar 13 at 10:05
Tryfon Farmakakis
111
asked Mar 13 at 10:05
Tryfon Farmakakis
111
asked Mar 13 at 10:05
Tryfon Farmakakis
111
asked Mar 13 at 10:05
Tryfon Farmakakis
111
asked Mar 13 at 10:05
Tryfon Farmakakis
111
111
I think that, even if you have 24GB or RAM, you need at least 5 GB of RAM (in my opinion the best would be 24GB). Maybe there is a problem with swapiness... if you run in a terminal as root the command:sysctl vm.swappinesswhat it returns?
– LilloX
Mar 13 at 10:16
It returns: vm.swappiness = 60
– Tryfon Farmakakis
Mar 13 at 11:14
You can try, as root, to executesysctl vm.swappiness=0. This disable the swap, maybe the system try to allocate the swap even if there is not...
– LilloX
Mar 13 at 11:18
Nope, this didn't change anything, as expected since I don't have any swap file as I explained before.
– Tryfon Farmakakis
Mar 14 at 13:30
@TryfonFarmakakis did you find a solution? could you help me?
– Soorena
Apr 10 at 9:10
add a comment |Â
I think that, even if you have 24GB or RAM, you need at least 5 GB of RAM (in my opinion the best would be 24GB). Maybe there is a problem with swapiness... if you run in a terminal as root the command:sysctl vm.swappinesswhat it returns?
– LilloX
Mar 13 at 10:16
It returns: vm.swappiness = 60
– Tryfon Farmakakis
Mar 13 at 11:14
You can try, as root, to executesysctl vm.swappiness=0. This disable the swap, maybe the system try to allocate the swap even if there is not...
– LilloX
Mar 13 at 11:18
Nope, this didn't change anything, as expected since I don't have any swap file as I explained before.
– Tryfon Farmakakis
Mar 14 at 13:30
@TryfonFarmakakis did you find a solution? could you help me?
– Soorena
Apr 10 at 9:10
I think that, even if you have 24GB or RAM, you need at least 5 GB of RAM (in my opinion the best would be 24GB). Maybe there is a problem with swapiness... if you run in a terminal as root the command:
sysctl vm.swappiness what it returns?– LilloX
Mar 13 at 10:16
I think that, even if you have 24GB or RAM, you need at least 5 GB of RAM (in my opinion the best would be 24GB). Maybe there is a problem with swapiness... if you run in a terminal as root the command:
sysctl vm.swappiness what it returns?– LilloX
Mar 13 at 10:16
It returns: vm.swappiness = 60
– Tryfon Farmakakis
Mar 13 at 11:14
It returns: vm.swappiness = 60
– Tryfon Farmakakis
Mar 13 at 11:14
You can try, as root, to execute
sysctl vm.swappiness=0 . This disable the swap, maybe the system try to allocate the swap even if there is not...– LilloX
Mar 13 at 11:18
You can try, as root, to execute
sysctl vm.swappiness=0 . This disable the swap, maybe the system try to allocate the swap even if there is not...– LilloX
Mar 13 at 11:18
Nope, this didn't change anything, as expected since I don't have any swap file as I explained before.
– Tryfon Farmakakis
Mar 14 at 13:30
Nope, this didn't change anything, as expected since I don't have any swap file as I explained before.
– Tryfon Farmakakis
Mar 14 at 13:30
@TryfonFarmakakis did you find a solution? could you help me?
– Soorena
Apr 10 at 9:10
@TryfonFarmakakis did you find a solution? could you help me?
– Soorena
Apr 10 at 9:10
add a comment |Â
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I think that, even if you have 24GB or RAM, you need at least 5 GB of RAM (in my opinion the best would be 24GB). Maybe there is a problem with swapiness... if you run in a terminal as root the command:
sysctl vm.swappinesswhat it returns?– LilloX
Mar 13 at 10:16
It returns: vm.swappiness = 60
– Tryfon Farmakakis
Mar 13 at 11:14
You can try, as root, to execute
sysctl vm.swappiness=0. This disable the swap, maybe the system try to allocate the swap even if there is not...– LilloX
Mar 13 at 11:18
Nope, this didn't change anything, as expected since I don't have any swap file as I explained before.
– Tryfon Farmakakis
Mar 14 at 13:30
@TryfonFarmakakis did you find a solution? could you help me?
– Soorena
Apr 10 at 9:10