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Is there a way to list the kernel threads that are created by the kernel only?
What are the effects, if any, of scheduler priorities and policies for threads in an uncontended cpuset?Is there a good way to poll in a real-time process which is kernel friendly?Why kernel threads are treated as processesAre kernel threads processes and daemons?Participating on the the kernel mailing listlist all the files/directories created by a specific userHow to delete all the files which are not created todayHow does the kernel knows which “threads”/processes are associated with a process?Is there any way to modify or manage the startup processes in RHEL 7.4?understanding how threads are created inside linux operating system
The command ps aux | grep ] will list all the running kernel threads (the kernel threads that are crated by the kernel, and the kernel threads that are crated by someone else).
Is there a way to list the kernel threads that are created by the kernel only?
linux
asked yesterday
user343344user343344
762
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user343344 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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The command ps aux | grep ] will list all the running kernel threads (the kernel threads that are crated by the kernel, and the kernel threads that are crated by someone else).
Is there a way to list the kernel threads that are created by the kernel only?
linux
asked yesterday
user343344user343344
762
New contributor
user343344 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 |
The command ps aux | grep ] will list all the running kernel threads (the kernel threads that are crated by the kernel, and the kernel threads that are crated by someone else).
Is there a way to list the kernel threads that are created by the kernel only?
linux
asked yesterday
user343344user343344
762
New contributor
user343344 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
The command ps aux | grep ] will list all the running kernel threads (the kernel threads that are crated by the kernel, and the kernel threads that are crated by someone else).
Is there a way to list the kernel threads that are created by the kernel only?
linux
linux
asked yesterday
user343344user343344
762
New contributor
user343344 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
user343344user343344
762
New contributor
user343344 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
user343344user343344
762
New contributor
user343344 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
user343344user343344
762
asked yesterday
user343344user343344
762
762
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user343344 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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New contributor
user343344 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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user343344 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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Kernel threads are always created by the kernel, and they’re always in process group 0, so you can filter on that:
ps -e -o pid,ppid,pgid,args | awk '$3 == 0'
(There doesn’t seem to be a way of filtering on process group id in ps; in theory one could filter on session 0 but ps doesn’t like that.)
You can also look for processes whose parent is kthreadd, the kernel thread dæmon:
ps --pid 2 --ppid 2 -o pid,ppid,pgid,args
(including pid 2 and its children).
answered yesterday
Stephen KittStephen Kitt
178k24404481
"Kernel threads are always created by the kernel" By "Kernel" do you mean the kernel and the kernel modules or just the kernel by itself (because I thinkkthread_create()is used by kernel modules to create kernel threads)?
– user343344
yesterday
Yes, both the kernel and kernel modules; I tend not to distinguish them since most modules can be built in, and once loaded, modules are effectively part of the kernel.
– Stephen Kitt
yesterday
You could perhaps distinguish between threads started by the “core” kernel from those started by modules by looking atetimesinps.
– Stephen Kitt
yesterday
add a comment |
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1 Answer
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1 Answer
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Kernel threads are always created by the kernel, and they’re always in process group 0, so you can filter on that:
ps -e -o pid,ppid,pgid,args | awk '$3 == 0'
(There doesn’t seem to be a way of filtering on process group id in ps; in theory one could filter on session 0 but ps doesn’t like that.)
You can also look for processes whose parent is kthreadd, the kernel thread dæmon:
ps --pid 2 --ppid 2 -o pid,ppid,pgid,args
(including pid 2 and its children).
answered yesterday
Stephen KittStephen Kitt
178k24404481
"Kernel threads are always created by the kernel" By "Kernel" do you mean the kernel and the kernel modules or just the kernel by itself (because I thinkkthread_create()is used by kernel modules to create kernel threads)?
– user343344
yesterday
Yes, both the kernel and kernel modules; I tend not to distinguish them since most modules can be built in, and once loaded, modules are effectively part of the kernel.
– Stephen Kitt
yesterday
You could perhaps distinguish between threads started by the “core” kernel from those started by modules by looking atetimesinps.
– Stephen Kitt
yesterday
add a comment |
Kernel threads are always created by the kernel, and they’re always in process group 0, so you can filter on that:
ps -e -o pid,ppid,pgid,args | awk '$3 == 0'
(There doesn’t seem to be a way of filtering on process group id in ps; in theory one could filter on session 0 but ps doesn’t like that.)
You can also look for processes whose parent is kthreadd, the kernel thread dæmon:
ps --pid 2 --ppid 2 -o pid,ppid,pgid,args
(including pid 2 and its children).
answered yesterday
Stephen KittStephen Kitt
178k24404481
"Kernel threads are always created by the kernel" By "Kernel" do you mean the kernel and the kernel modules or just the kernel by itself (because I thinkkthread_create()is used by kernel modules to create kernel threads)?
– user343344
yesterday
Yes, both the kernel and kernel modules; I tend not to distinguish them since most modules can be built in, and once loaded, modules are effectively part of the kernel.
– Stephen Kitt
yesterday
You could perhaps distinguish between threads started by the “core” kernel from those started by modules by looking atetimesinps.
– Stephen Kitt
yesterday
add a comment |
Kernel threads are always created by the kernel, and they’re always in process group 0, so you can filter on that:
ps -e -o pid,ppid,pgid,args | awk '$3 == 0'
(There doesn’t seem to be a way of filtering on process group id in ps; in theory one could filter on session 0 but ps doesn’t like that.)
You can also look for processes whose parent is kthreadd, the kernel thread dæmon:
ps --pid 2 --ppid 2 -o pid,ppid,pgid,args
(including pid 2 and its children).
answered yesterday
Stephen KittStephen Kitt
178k24404481
Kernel threads are always created by the kernel, and they’re always in process group 0, so you can filter on that:
ps -e -o pid,ppid,pgid,args | awk '$3 == 0'
(There doesn’t seem to be a way of filtering on process group id in ps; in theory one could filter on session 0 but ps doesn’t like that.)
You can also look for processes whose parent is kthreadd, the kernel thread dæmon:
ps --pid 2 --ppid 2 -o pid,ppid,pgid,args
(including pid 2 and its children).
answered yesterday
Stephen KittStephen Kitt
178k24404481
answered yesterday
Stephen KittStephen Kitt
178k24404481
answered yesterday
Stephen KittStephen Kitt
178k24404481
answered yesterday
Stephen KittStephen Kitt
178k24404481
178k24404481
"Kernel threads are always created by the kernel" By "Kernel" do you mean the kernel and the kernel modules or just the kernel by itself (because I thinkkthread_create()is used by kernel modules to create kernel threads)?
– user343344
yesterday
Yes, both the kernel and kernel modules; I tend not to distinguish them since most modules can be built in, and once loaded, modules are effectively part of the kernel.
– Stephen Kitt
yesterday
You could perhaps distinguish between threads started by the “core” kernel from those started by modules by looking atetimesinps.
– Stephen Kitt
yesterday
add a comment |
"Kernel threads are always created by the kernel" By "Kernel" do you mean the kernel and the kernel modules or just the kernel by itself (because I thinkkthread_create()is used by kernel modules to create kernel threads)?
– user343344
yesterday
Yes, both the kernel and kernel modules; I tend not to distinguish them since most modules can be built in, and once loaded, modules are effectively part of the kernel.
– Stephen Kitt
yesterday
You could perhaps distinguish between threads started by the “core” kernel from those started by modules by looking atetimesinps.
– Stephen Kitt
yesterday
"Kernel threads are always created by the kernel" By "Kernel" do you mean the kernel and the kernel modules or just the kernel by itself (because I think
kthread_create() is used by kernel modules to create kernel threads)?– user343344
yesterday
"Kernel threads are always created by the kernel" By "Kernel" do you mean the kernel and the kernel modules or just the kernel by itself (because I think
kthread_create() is used by kernel modules to create kernel threads)?– user343344
yesterday
Yes, both the kernel and kernel modules; I tend not to distinguish them since most modules can be built in, and once loaded, modules are effectively part of the kernel.
– Stephen Kitt
yesterday
Yes, both the kernel and kernel modules; I tend not to distinguish them since most modules can be built in, and once loaded, modules are effectively part of the kernel.
– Stephen Kitt
yesterday
You could perhaps distinguish between threads started by the “core” kernel from those started by modules by looking at
etimes in ps.– Stephen Kitt
yesterday
You could perhaps distinguish between threads started by the “core” kernel from those started by modules by looking at
etimes in ps.– Stephen Kitt
yesterday
add a comment |
user343344 is a new contributor. Be nice, and check out our Code of Conduct.
user343344 is a new contributor. Be nice, and check out our Code of Conduct.
user343344 is a new contributor. Be nice, and check out our Code of Conduct.
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