What priorities can be used in cgroups net_prio module?
Cgroups has a module called net_prio, and by using this module I can set the priority of network traffic generated by various applications. As you can read here, this can be achieved by setting something similar to the following:
echo "eth0 5" > /sys/fs/cgroups/net_prio/iscsi/net_prio.ifpriomap
But there's no info as to what range of priorities I can use.
Let's say there's a program in my system that should have the lowest network priority. What should I use in the pace of 5 ? Are the priorities similar to nice priorities?
networking cgroups
asked Jan 23 '14 at 5:27
Mikhail MorfikovMikhail Morfikov
4,540124573
add a comment |
Cgroups has a module called net_prio, and by using this module I can set the priority of network traffic generated by various applications. As you can read here, this can be achieved by setting something similar to the following:
echo "eth0 5" > /sys/fs/cgroups/net_prio/iscsi/net_prio.ifpriomap
But there's no info as to what range of priorities I can use.
Let's say there's a program in my system that should have the lowest network priority. What should I use in the pace of 5 ? Are the priorities similar to nice priorities?
networking cgroups
asked Jan 23 '14 at 5:27
Mikhail MorfikovMikhail Morfikov
4,540124573
add a comment |
Cgroups has a module called net_prio, and by using this module I can set the priority of network traffic generated by various applications. As you can read here, this can be achieved by setting something similar to the following:
echo "eth0 5" > /sys/fs/cgroups/net_prio/iscsi/net_prio.ifpriomap
But there's no info as to what range of priorities I can use.
Let's say there's a program in my system that should have the lowest network priority. What should I use in the pace of 5 ? Are the priorities similar to nice priorities?
networking cgroups
asked Jan 23 '14 at 5:27
Mikhail MorfikovMikhail Morfikov
4,540124573
Cgroups has a module called net_prio, and by using this module I can set the priority of network traffic generated by various applications. As you can read here, this can be achieved by setting something similar to the following:
echo "eth0 5" > /sys/fs/cgroups/net_prio/iscsi/net_prio.ifpriomap
But there's no info as to what range of priorities I can use.
Let's say there's a program in my system that should have the lowest network priority. What should I use in the pace of 5 ? Are the priorities similar to nice priorities?
networking cgroups
networking cgroups
asked Jan 23 '14 at 5:27
Mikhail MorfikovMikhail Morfikov
4,540124573
asked Jan 23 '14 at 5:27
Mikhail MorfikovMikhail Morfikov
4,540124573
asked Jan 23 '14 at 5:27
Mikhail MorfikovMikhail Morfikov
4,540124573
asked Jan 23 '14 at 5:27
Mikhail MorfikovMikhail Morfikov
4,540124573
asked Jan 23 '14 at 5:27
Mikhail MorfikovMikhail Morfikov
4,540124573
4,540124573
add a comment |
add a comment |
1 Answer
1
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oldest
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From the Kernel documentation titled: Network priority cgroup.
excerpt
net_prio.prioidx
This file is read-only, and is simply informative. It contains a unique integer value that the kernel uses as an internal representation of this cgroup.
net_prio.ifpriomap
This file contains a map of the priorities assigned to traffic originating from
processes in this group and egressing the system on various interfaces. It
contains a list of tuples in the form <ifname priority>. Contents of this file
can be modified by echoing a string into the file using the same tuple format.
for example:
echo "eth0 5" > /sys/fs/cgroups/net_prio/iscsi/net_prio.ifpriomap
This command would force any traffic originating from processes belonging to the iscsi net_prio cgroup and egressing on interface eth0 to have the priority of said traffic set to the value 5. The parent accounting group also has a
writeable 'net_prio.ifpriomap' file that can be used to set a system default
priority.
I believe these priorities work where the higher the number, the higher the precedence. From the tc man page:
excerpt
PRIO The PRIO qdisc is a non-shaping container for a configurable
number of classes which are dequeued in order. This allows for
easy prioritization of traffic, where lower classes are
only able to send if higher ones have no packets available. To
facilitate configuration, Type Of Service bits are honored by
default.
So if there are packets for a lower class they have to wait until there aren't any from a higher numbered class.
References
- 3.9. net_prio - Red Hat documentation portal
edited Feb 10 '14 at 9:59
myroslav
1134
answered Jan 23 '14 at 6:15
slm♦slm
254k71538687
1
I think I figured that out, I mean, how to set the lowest priority to a specific program. Incgroups/net_prio/net_prio.ifpriomapI had to set, for example,eth0 3, so the default priority of all processes is3, and now in a child directory I can easily specify1to that program I wanted. Do you know the biggest value the priority may take? There was something about SO_PRIORITY, and this could be 0-6, but I'm not sure.
– Mikhail Morfikov
Jan 23 '14 at 6:53
@MikhailMorfikov - I do not know the upper end value either, but did see that same note, so I would assume that those are the valid range of values.
– slm♦
Jan 23 '14 at 7:49
add a comment |
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1 Answer
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From the Kernel documentation titled: Network priority cgroup.
excerpt
net_prio.prioidx
This file is read-only, and is simply informative. It contains a unique integer value that the kernel uses as an internal representation of this cgroup.
net_prio.ifpriomap
This file contains a map of the priorities assigned to traffic originating from
processes in this group and egressing the system on various interfaces. It
contains a list of tuples in the form <ifname priority>. Contents of this file
can be modified by echoing a string into the file using the same tuple format.
for example:
echo "eth0 5" > /sys/fs/cgroups/net_prio/iscsi/net_prio.ifpriomap
This command would force any traffic originating from processes belonging to the iscsi net_prio cgroup and egressing on interface eth0 to have the priority of said traffic set to the value 5. The parent accounting group also has a
writeable 'net_prio.ifpriomap' file that can be used to set a system default
priority.
I believe these priorities work where the higher the number, the higher the precedence. From the tc man page:
excerpt
PRIO The PRIO qdisc is a non-shaping container for a configurable
number of classes which are dequeued in order. This allows for
easy prioritization of traffic, where lower classes are
only able to send if higher ones have no packets available. To
facilitate configuration, Type Of Service bits are honored by
default.
So if there are packets for a lower class they have to wait until there aren't any from a higher numbered class.
References
- 3.9. net_prio - Red Hat documentation portal
edited Feb 10 '14 at 9:59
myroslav
1134
answered Jan 23 '14 at 6:15
slm♦slm
254k71538687
1
I think I figured that out, I mean, how to set the lowest priority to a specific program. Incgroups/net_prio/net_prio.ifpriomapI had to set, for example,eth0 3, so the default priority of all processes is3, and now in a child directory I can easily specify1to that program I wanted. Do you know the biggest value the priority may take? There was something about SO_PRIORITY, and this could be 0-6, but I'm not sure.
– Mikhail Morfikov
Jan 23 '14 at 6:53
@MikhailMorfikov - I do not know the upper end value either, but did see that same note, so I would assume that those are the valid range of values.
– slm♦
Jan 23 '14 at 7:49
add a comment |
From the Kernel documentation titled: Network priority cgroup.
excerpt
net_prio.prioidx
This file is read-only, and is simply informative. It contains a unique integer value that the kernel uses as an internal representation of this cgroup.
net_prio.ifpriomap
This file contains a map of the priorities assigned to traffic originating from
processes in this group and egressing the system on various interfaces. It
contains a list of tuples in the form <ifname priority>. Contents of this file
can be modified by echoing a string into the file using the same tuple format.
for example:
echo "eth0 5" > /sys/fs/cgroups/net_prio/iscsi/net_prio.ifpriomap
This command would force any traffic originating from processes belonging to the iscsi net_prio cgroup and egressing on interface eth0 to have the priority of said traffic set to the value 5. The parent accounting group also has a
writeable 'net_prio.ifpriomap' file that can be used to set a system default
priority.
I believe these priorities work where the higher the number, the higher the precedence. From the tc man page:
excerpt
PRIO The PRIO qdisc is a non-shaping container for a configurable
number of classes which are dequeued in order. This allows for
easy prioritization of traffic, where lower classes are
only able to send if higher ones have no packets available. To
facilitate configuration, Type Of Service bits are honored by
default.
So if there are packets for a lower class they have to wait until there aren't any from a higher numbered class.
References
- 3.9. net_prio - Red Hat documentation portal
edited Feb 10 '14 at 9:59
myroslav
1134
answered Jan 23 '14 at 6:15
slm♦slm
254k71538687
1
I think I figured that out, I mean, how to set the lowest priority to a specific program. Incgroups/net_prio/net_prio.ifpriomapI had to set, for example,eth0 3, so the default priority of all processes is3, and now in a child directory I can easily specify1to that program I wanted. Do you know the biggest value the priority may take? There was something about SO_PRIORITY, and this could be 0-6, but I'm not sure.
– Mikhail Morfikov
Jan 23 '14 at 6:53
@MikhailMorfikov - I do not know the upper end value either, but did see that same note, so I would assume that those are the valid range of values.
– slm♦
Jan 23 '14 at 7:49
add a comment |
From the Kernel documentation titled: Network priority cgroup.
excerpt
net_prio.prioidx
This file is read-only, and is simply informative. It contains a unique integer value that the kernel uses as an internal representation of this cgroup.
net_prio.ifpriomap
This file contains a map of the priorities assigned to traffic originating from
processes in this group and egressing the system on various interfaces. It
contains a list of tuples in the form <ifname priority>. Contents of this file
can be modified by echoing a string into the file using the same tuple format.
for example:
echo "eth0 5" > /sys/fs/cgroups/net_prio/iscsi/net_prio.ifpriomap
This command would force any traffic originating from processes belonging to the iscsi net_prio cgroup and egressing on interface eth0 to have the priority of said traffic set to the value 5. The parent accounting group also has a
writeable 'net_prio.ifpriomap' file that can be used to set a system default
priority.
I believe these priorities work where the higher the number, the higher the precedence. From the tc man page:
excerpt
PRIO The PRIO qdisc is a non-shaping container for a configurable
number of classes which are dequeued in order. This allows for
easy prioritization of traffic, where lower classes are
only able to send if higher ones have no packets available. To
facilitate configuration, Type Of Service bits are honored by
default.
So if there are packets for a lower class they have to wait until there aren't any from a higher numbered class.
References
- 3.9. net_prio - Red Hat documentation portal
edited Feb 10 '14 at 9:59
myroslav
1134
answered Jan 23 '14 at 6:15
slm♦slm
254k71538687
From the Kernel documentation titled: Network priority cgroup.
excerpt
net_prio.prioidx
This file is read-only, and is simply informative. It contains a unique integer value that the kernel uses as an internal representation of this cgroup.
net_prio.ifpriomap
This file contains a map of the priorities assigned to traffic originating from
processes in this group and egressing the system on various interfaces. It
contains a list of tuples in the form <ifname priority>. Contents of this file
can be modified by echoing a string into the file using the same tuple format.
for example:
echo "eth0 5" > /sys/fs/cgroups/net_prio/iscsi/net_prio.ifpriomap
This command would force any traffic originating from processes belonging to the iscsi net_prio cgroup and egressing on interface eth0 to have the priority of said traffic set to the value 5. The parent accounting group also has a
writeable 'net_prio.ifpriomap' file that can be used to set a system default
priority.
I believe these priorities work where the higher the number, the higher the precedence. From the tc man page:
excerpt
PRIO The PRIO qdisc is a non-shaping container for a configurable
number of classes which are dequeued in order. This allows for
easy prioritization of traffic, where lower classes are
only able to send if higher ones have no packets available. To
facilitate configuration, Type Of Service bits are honored by
default.
So if there are packets for a lower class they have to wait until there aren't any from a higher numbered class.
References
- 3.9. net_prio - Red Hat documentation portal
edited Feb 10 '14 at 9:59
myroslav
1134
answered Jan 23 '14 at 6:15
slm♦slm
254k71538687
edited Feb 10 '14 at 9:59
myroslav
1134
edited Feb 10 '14 at 9:59
myroslav
1134
edited Feb 10 '14 at 9:59
myroslav
1134
1134
answered Jan 23 '14 at 6:15
slm♦slm
254k71538687
answered Jan 23 '14 at 6:15
slm♦slm
254k71538687
answered Jan 23 '14 at 6:15
slm♦slm
254k71538687
254k71538687
1
I think I figured that out, I mean, how to set the lowest priority to a specific program. Incgroups/net_prio/net_prio.ifpriomapI had to set, for example,eth0 3, so the default priority of all processes is3, and now in a child directory I can easily specify1to that program I wanted. Do you know the biggest value the priority may take? There was something about SO_PRIORITY, and this could be 0-6, but I'm not sure.
– Mikhail Morfikov
Jan 23 '14 at 6:53
@MikhailMorfikov - I do not know the upper end value either, but did see that same note, so I would assume that those are the valid range of values.
– slm♦
Jan 23 '14 at 7:49
add a comment |
1
I think I figured that out, I mean, how to set the lowest priority to a specific program. Incgroups/net_prio/net_prio.ifpriomapI had to set, for example,eth0 3, so the default priority of all processes is3, and now in a child directory I can easily specify1to that program I wanted. Do you know the biggest value the priority may take? There was something about SO_PRIORITY, and this could be 0-6, but I'm not sure.
– Mikhail Morfikov
Jan 23 '14 at 6:53
@MikhailMorfikov - I do not know the upper end value either, but did see that same note, so I would assume that those are the valid range of values.
– slm♦
Jan 23 '14 at 7:49
1
1
I think I figured that out, I mean, how to set the lowest priority to a specific program. In
cgroups/net_prio/net_prio.ifpriomap I had to set, for example, eth0 3, so the default priority of all processes is 3, and now in a child directory I can easily specify 1 to that program I wanted. Do you know the biggest value the priority may take? There was something about SO_PRIORITY, and this could be 0-6, but I'm not sure.– Mikhail Morfikov
Jan 23 '14 at 6:53
I think I figured that out, I mean, how to set the lowest priority to a specific program. In
cgroups/net_prio/net_prio.ifpriomap I had to set, for example, eth0 3, so the default priority of all processes is 3, and now in a child directory I can easily specify 1 to that program I wanted. Do you know the biggest value the priority may take? There was something about SO_PRIORITY, and this could be 0-6, but I'm not sure.– Mikhail Morfikov
Jan 23 '14 at 6:53
@MikhailMorfikov - I do not know the upper end value either, but did see that same note, so I would assume that those are the valid range of values.
– slm♦
Jan 23 '14 at 7:49
@MikhailMorfikov - I do not know the upper end value either, but did see that same note, so I would assume that those are the valid range of values.
– slm♦
Jan 23 '14 at 7:49
add a comment |
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