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Commit 9b61fc4c authored by Andrea Righi's avatar Andrea Righi Committed by Linus Torvalds
Browse files

Documentation: fix cgroup blkio throttle filenames 



All the blkio.throttle.* file names are incorrectly reported without
".throttle" in the documentation. Fix it.

Signed-off-by: default avatarAndrea Righi <andrea@betterlinux.com>
Signed-off-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Acked-by: default avatarVivek Goyal <vgoyal@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 316b3799

Documentation/cgroups/blkio-controller.txt

+6 −6
Original line number Diff line number Diff line
@@ -77,7 +77,7 @@ Throttling/Upper Limit policy 
- Specify a bandwidth rate on particular device for root group. The format

  for policy is "<major>:<minor>  <byes_per_second>".



        echo "8:16  1048576" > /sys/fs/cgroup/blkio/blkio.read_bps_device

        echo "8:16  1048576" > /sys/fs/cgroup/blkio/blkio.throttle.read_bps_device



  Above will put a limit of 1MB/second on reads happening for root group

  on device having major/minor number 8:16.
@@ -90,7 +90,7 @@ Throttling/Upper Limit policy 
        1024+0 records out

        4194304 bytes (4.2 MB) copied, 4.0001 s, 1.0 MB/s



 Limits for writes can be put using blkio.write_bps_device file.

 Limits for writes can be put using blkio.throttle.write_bps_device file.



Hierarchical Cgroups

====================
@@ -286,28 +286,28 @@ Throttling/Upper limit policy files 
	  specified in bytes per second. Rules are per deivce. Following is

	  the format.



  echo "<major>:<minor>  <rate_bytes_per_second>" > /cgrp/blkio.read_bps_device

  echo "<major>:<minor>  <rate_bytes_per_second>" > /cgrp/blkio.throttle.read_bps_device



- blkio.throttle.write_bps_device

	- Specifies upper limit on WRITE rate to the device. IO rate is

	  specified in bytes per second. Rules are per deivce. Following is

	  the format.



  echo "<major>:<minor>  <rate_bytes_per_second>" > /cgrp/blkio.write_bps_device

  echo "<major>:<minor>  <rate_bytes_per_second>" > /cgrp/blkio.throttle.write_bps_device



- blkio.throttle.read_iops_device

	- Specifies upper limit on READ rate from the device. IO rate is

	  specified in IO per second. Rules are per deivce. Following is

	  the format.



  echo "<major>:<minor>  <rate_io_per_second>" > /cgrp/blkio.read_iops_device

  echo "<major>:<minor>  <rate_io_per_second>" > /cgrp/blkio.throttle.read_iops_device



- blkio.throttle.write_iops_device

	- Specifies upper limit on WRITE rate to the device. IO rate is

	  specified in io per second. Rules are per deivce. Following is

	  the format.



  echo "<major>:<minor>  <rate_io_per_second>" > /cgrp/blkio.write_iops_device

  echo "<major>:<minor>  <rate_io_per_second>" > /cgrp/blkio.throttle.write_iops_device



Note: If both BW and IOPS rules are specified for a device, then IO is

      subjectd to both the constraints.