![]() ![]() The way this tool works is by checking multiple times per second if the spawned process has not oversubscribed its set boundaries. Sudo tee /usr/local/bin/timeout & sudo chmod 755 /usr/local/bin/timeoutĪfter that, you can 'cage' your process by memory consumption as in your question like so: timeout -m 500 pdftoppm Sample.pdfĪlternatively you could use -t and -x to respectively limit the process by time or CPU constraints. The timeout tool requires Perl 5+ and the /proc filesystem mounted. Here's a useful read on the topic: Limiting time and memory consumption of a program in Linux, which lead to the timeout tool, which lets you cage a process (and its forks) by time or memory consumption. Note that on a modern Ubuntu distribution this example requires installing the cgroup-tools package (previously cgroup-bin): sudo apt install cgroup-toolsĪnd editing /etc/default/grub to change GRUB_CMDLINE_LINUX_DEFAULT to: GRUB_CMDLINE_LINUX_DEFAULT="cgroup_enable=memory swapaccount=1"Īnd then running sudo update-grub and rebooting to boot with the new kernel boot parameters. ![]() To run a process under the control group: cgexec -g memory:myGroup pdftoppm More info about these options can be found here: 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 _in_bytes. For example: cgcreate -g memory:myGroupĮcho 500M > /sys/fs/cgroup/memory/myGroup/memory.limit_in_bytesĮcho 5G > /sys/fs/cgroup/memory/myGroup/_in_bytes This is especially useful if you want to limit a process's (or group of processes') allocation of physical memory distinctly from virtual memory. ![]() Another way to limit this is to use Linux's control groups. ![]()
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