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echo 4G > memory.max: memory.max always 0
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I'm trying to set a memory limit with cgroup2 with this command:
echo 4G > memory.max
This works fine on my laptop, but on my server cat memory.max always returns 0. No matter what I write to it (even writing max doesn't work), it is always 0
What is happening here and how can I fix it?
linux cgroups
asked 50 mins ago
DemindiroDemindiro
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I'm trying to set a memory limit with cgroup2 with this command:
echo 4G > memory.max
This works fine on my laptop, but on my server cat memory.max always returns 0. No matter what I write to it (even writing max doesn't work), it is always 0
What is happening here and how can I fix it?
linux cgroups
asked 50 mins ago
DemindiroDemindiro
11 bronze badge
New contributor
Demindiro 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 |
I'm trying to set a memory limit with cgroup2 with this command:
echo 4G > memory.max
This works fine on my laptop, but on my server cat memory.max always returns 0. No matter what I write to it (even writing max doesn't work), it is always 0
What is happening here and how can I fix it?
linux cgroups
asked 50 mins ago
DemindiroDemindiro
11 bronze badge
New contributor
Demindiro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I'm trying to set a memory limit with cgroup2 with this command:
echo 4G > memory.max
This works fine on my laptop, but on my server cat memory.max always returns 0. No matter what I write to it (even writing max doesn't work), it is always 0
What is happening here and how can I fix it?
linux cgroups
linux cgroups
asked 50 mins ago
DemindiroDemindiro
11 bronze badge
New contributor
Demindiro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 50 mins ago
DemindiroDemindiro
11 bronze badge
New contributor
Demindiro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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asked 50 mins ago
DemindiroDemindiro
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asked 50 mins ago
DemindiroDemindiro
11 bronze badge
asked 50 mins ago
DemindiroDemindiro
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1 Answer
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The problem is caused by the trailing newline when using echo, which is interpreted as a 0.
e.g.:
$ cat memory.max
max
$ echo 4G > memory.max
$ cat memory.max
0
$ echo -n 4G > memory.max
$ cat memory.max
4294967296
$ echo max > memory.max
$ cat memory.max
0
$ echo -n max > memory.max
$ cat memory.max
max
Normally it should work with a newline, but it depends on which libc version you are using.
e.g. On a system with glibc strace echo 4G returns this:
...
write(1, "4Gn", 34G
) = 3
...
However, if you use musl-libc you get this instead:
...
writev(1, [{iov_base="4G", iov_len=2}, {iov_base="n", iov_len=1}], 24G
) = 3
...
answered 48 mins ago
DemindiroDemindiro
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1 Answer
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oldest
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1 Answer
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active
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active
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votes
The problem is caused by the trailing newline when using echo, which is interpreted as a 0.
e.g.:
$ cat memory.max
max
$ echo 4G > memory.max
$ cat memory.max
0
$ echo -n 4G > memory.max
$ cat memory.max
4294967296
$ echo max > memory.max
$ cat memory.max
0
$ echo -n max > memory.max
$ cat memory.max
max
Normally it should work with a newline, but it depends on which libc version you are using.
e.g. On a system with glibc strace echo 4G returns this:
...
write(1, "4Gn", 34G
) = 3
...
However, if you use musl-libc you get this instead:
...
writev(1, [{iov_base="4G", iov_len=2}, {iov_base="n", iov_len=1}], 24G
) = 3
...
answered 48 mins ago
DemindiroDemindiro
11 bronze badge
New contributor
Demindiro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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The problem is caused by the trailing newline when using echo, which is interpreted as a 0.
e.g.:
$ cat memory.max
max
$ echo 4G > memory.max
$ cat memory.max
0
$ echo -n 4G > memory.max
$ cat memory.max
4294967296
$ echo max > memory.max
$ cat memory.max
0
$ echo -n max > memory.max
$ cat memory.max
max
Normally it should work with a newline, but it depends on which libc version you are using.
e.g. On a system with glibc strace echo 4G returns this:
...
write(1, "4Gn", 34G
) = 3
...
However, if you use musl-libc you get this instead:
...
writev(1, [{iov_base="4G", iov_len=2}, {iov_base="n", iov_len=1}], 24G
) = 3
...
answered 48 mins ago
DemindiroDemindiro
11 bronze badge
New contributor
Demindiro 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 problem is caused by the trailing newline when using echo, which is interpreted as a 0.
e.g.:
$ cat memory.max
max
$ echo 4G > memory.max
$ cat memory.max
0
$ echo -n 4G > memory.max
$ cat memory.max
4294967296
$ echo max > memory.max
$ cat memory.max
0
$ echo -n max > memory.max
$ cat memory.max
max
Normally it should work with a newline, but it depends on which libc version you are using.
e.g. On a system with glibc strace echo 4G returns this:
...
write(1, "4Gn", 34G
) = 3
...
However, if you use musl-libc you get this instead:
...
writev(1, [{iov_base="4G", iov_len=2}, {iov_base="n", iov_len=1}], 24G
) = 3
...
answered 48 mins ago
DemindiroDemindiro
11 bronze badge
New contributor
Demindiro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
The problem is caused by the trailing newline when using echo, which is interpreted as a 0.
e.g.:
$ cat memory.max
max
$ echo 4G > memory.max
$ cat memory.max
0
$ echo -n 4G > memory.max
$ cat memory.max
4294967296
$ echo max > memory.max
$ cat memory.max
0
$ echo -n max > memory.max
$ cat memory.max
max
Normally it should work with a newline, but it depends on which libc version you are using.
e.g. On a system with glibc strace echo 4G returns this:
...
write(1, "4Gn", 34G
) = 3
...
However, if you use musl-libc you get this instead:
...
writev(1, [{iov_base="4G", iov_len=2}, {iov_base="n", iov_len=1}], 24G
) = 3
...
answered 48 mins ago
DemindiroDemindiro
11 bronze badge
New contributor
Demindiro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 48 mins ago
DemindiroDemindiro
11 bronze badge
New contributor
Demindiro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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answered 48 mins ago
DemindiroDemindiro
11 bronze badge
answered 48 mins ago
DemindiroDemindiro
11 bronze badge
11 bronze badge
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Demindiro is a new contributor. Be nice, and check out our Code of Conduct.
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