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: Andrea Righi <andrea@betterlinux.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -77,7 +77,7 @@ Throttling/Upper Limit policy
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- Specify a bandwidth rate on particular device for root group. The format
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- Specify a bandwidth rate on particular device for root group. The format
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for policy is "<major>:<minor> <byes_per_second>".
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for policy is "<major>:<minor> <byes_per_second>".
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echo "8:16 1048576" > /sys/fs/cgroup/blkio/blkio.read_bps_device
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echo "8:16 1048576" > /sys/fs/cgroup/blkio/blkio.throttle.read_bps_device
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Above will put a limit of 1MB/second on reads happening for root group
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Above will put a limit of 1MB/second on reads happening for root group
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on device having major/minor number 8:16.
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on device having major/minor number 8:16.
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@ -90,7 +90,7 @@ Throttling/Upper Limit policy
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1024+0 records out
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1024+0 records out
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4194304 bytes (4.2 MB) copied, 4.0001 s, 1.0 MB/s
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4194304 bytes (4.2 MB) copied, 4.0001 s, 1.0 MB/s
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Limits for writes can be put using blkio.write_bps_device file.
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Limits for writes can be put using blkio.throttle.write_bps_device file.
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Hierarchical Cgroups
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Hierarchical Cgroups
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====================
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====================
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@ -286,28 +286,28 @@ Throttling/Upper limit policy files
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specified in bytes per second. Rules are per deivce. Following is
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specified in bytes per second. Rules are per deivce. Following is
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the format.
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the format.
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echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.read_bps_device
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echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.throttle.read_bps_device
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- blkio.throttle.write_bps_device
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- blkio.throttle.write_bps_device
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- Specifies upper limit on WRITE rate to the device. IO rate is
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- Specifies upper limit on WRITE rate to the device. IO rate is
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specified in bytes per second. Rules are per deivce. Following is
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specified in bytes per second. Rules are per deivce. Following is
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the format.
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the format.
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echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.write_bps_device
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echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.throttle.write_bps_device
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- blkio.throttle.read_iops_device
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- blkio.throttle.read_iops_device
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- Specifies upper limit on READ rate from the device. IO rate is
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- Specifies upper limit on READ rate from the device. IO rate is
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specified in IO per second. Rules are per deivce. Following is
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specified in IO per second. Rules are per deivce. Following is
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the format.
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the format.
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echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.read_iops_device
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echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.throttle.read_iops_device
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- blkio.throttle.write_iops_device
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- blkio.throttle.write_iops_device
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- Specifies upper limit on WRITE rate to the device. IO rate is
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- Specifies upper limit on WRITE rate to the device. IO rate is
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specified in io per second. Rules are per deivce. Following is
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specified in io per second. Rules are per deivce. Following is
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the format.
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the format.
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echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.write_iops_device
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echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.throttle.write_iops_device
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Note: If both BW and IOPS rules are specified for a device, then IO is
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Note: If both BW and IOPS rules are specified for a device, then IO is
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subjectd to both the constraints.
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subjectd to both the constraints.
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