Conceptual question: why is there no way to prioritize memory on linux?
There is a way on unix systems to prioritize CPU usage, both in terms of a process decreasing its own priority, and a su-enabled user increasing a process's priority. This can be used, for example, to ensure that the GUI, or a webserver task, or something, always has access to CPU usage, by giving it higher priority.
On the other hand, there does not seem to be a good way to make sure that a process has good "memory priority" without mucking about with kernel settings (see https://superuser.com/questions/1115983/prevent-system-freeze-unresponsiveness-due-to-swapping-run-away-memory-usage). The system I have in mind that could handle this would be quite simple: instead of paging purely based on LRU or whatever algorithm the system is using to choose which pages are swapped, the system could also take into account the priority of the process, and swap out the least prioritized tasks first.
I can't think of any conceptual reasons that this wouldn't work. Are the reasons this doesn't exist purely historical?
memory swap priority
asked 2 hours ago
k_gk_g
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There is a way on unix systems to prioritize CPU usage, both in terms of a process decreasing its own priority, and a su-enabled user increasing a process's priority. This can be used, for example, to ensure that the GUI, or a webserver task, or something, always has access to CPU usage, by giving it higher priority.
On the other hand, there does not seem to be a good way to make sure that a process has good "memory priority" without mucking about with kernel settings (see https://superuser.com/questions/1115983/prevent-system-freeze-unresponsiveness-due-to-swapping-run-away-memory-usage). The system I have in mind that could handle this would be quite simple: instead of paging purely based on LRU or whatever algorithm the system is using to choose which pages are swapped, the system could also take into account the priority of the process, and swap out the least prioritized tasks first.
I can't think of any conceptual reasons that this wouldn't work. Are the reasons this doesn't exist purely historical?
memory swap priority
asked 2 hours ago
k_gk_g
1012
New contributor
k_g is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
There is a way on unix systems to prioritize CPU usage, both in terms of a process decreasing its own priority, and a su-enabled user increasing a process's priority. This can be used, for example, to ensure that the GUI, or a webserver task, or something, always has access to CPU usage, by giving it higher priority.
On the other hand, there does not seem to be a good way to make sure that a process has good "memory priority" without mucking about with kernel settings (see https://superuser.com/questions/1115983/prevent-system-freeze-unresponsiveness-due-to-swapping-run-away-memory-usage). The system I have in mind that could handle this would be quite simple: instead of paging purely based on LRU or whatever algorithm the system is using to choose which pages are swapped, the system could also take into account the priority of the process, and swap out the least prioritized tasks first.
I can't think of any conceptual reasons that this wouldn't work. Are the reasons this doesn't exist purely historical?
memory swap priority
asked 2 hours ago
k_gk_g
1012
New contributor
k_g is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
There is a way on unix systems to prioritize CPU usage, both in terms of a process decreasing its own priority, and a su-enabled user increasing a process's priority. This can be used, for example, to ensure that the GUI, or a webserver task, or something, always has access to CPU usage, by giving it higher priority.
On the other hand, there does not seem to be a good way to make sure that a process has good "memory priority" without mucking about with kernel settings (see https://superuser.com/questions/1115983/prevent-system-freeze-unresponsiveness-due-to-swapping-run-away-memory-usage). The system I have in mind that could handle this would be quite simple: instead of paging purely based on LRU or whatever algorithm the system is using to choose which pages are swapped, the system could also take into account the priority of the process, and swap out the least prioritized tasks first.
I can't think of any conceptual reasons that this wouldn't work. Are the reasons this doesn't exist purely historical?
memory swap priority
memory swap priority
asked 2 hours ago
k_gk_g
1012
New contributor
k_g is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
k_gk_g
1012
New contributor
k_g is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
k_gk_g
1012
New contributor
k_g is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
k_gk_g
1012
asked 2 hours ago
k_gk_g
1012
1012
New contributor
k_g is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
k_g is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
k_g is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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