diff options
| -rw-r--r-- | Documentation/cgroups/blkio-controller.txt | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/Documentation/cgroups/blkio-controller.txt b/Documentation/cgroups/blkio-controller.txt index cd45c8ea7463..84f0a15fc210 100644 --- a/Documentation/cgroups/blkio-controller.txt +++ b/Documentation/cgroups/blkio-controller.txt | |||
| @@ -77,7 +77,7 @@ Throttling/Upper Limit policy | |||
| 77 | - Specify a bandwidth rate on particular device for root group. The format | 77 | - Specify a bandwidth rate on particular device for root group. The format |
| 78 | for policy is "<major>:<minor> <byes_per_second>". | 78 | for policy is "<major>:<minor> <byes_per_second>". |
| 79 | 79 | ||
| 80 | echo "8:16 1048576" > /sys/fs/cgroup/blkio/blkio.read_bps_device | 80 | echo "8:16 1048576" > /sys/fs/cgroup/blkio/blkio.throttle.read_bps_device |
| 81 | 81 | ||
| 82 | Above will put a limit of 1MB/second on reads happening for root group | 82 | Above will put a limit of 1MB/second on reads happening for root group |
| 83 | on device having major/minor number 8:16. | 83 | on device having major/minor number 8:16. |
| @@ -90,7 +90,7 @@ Throttling/Upper Limit policy | |||
| 90 | 1024+0 records out | 90 | 1024+0 records out |
| 91 | 4194304 bytes (4.2 MB) copied, 4.0001 s, 1.0 MB/s | 91 | 4194304 bytes (4.2 MB) copied, 4.0001 s, 1.0 MB/s |
| 92 | 92 | ||
| 93 | Limits for writes can be put using blkio.write_bps_device file. | 93 | Limits for writes can be put using blkio.throttle.write_bps_device file. |
| 94 | 94 | ||
| 95 | Hierarchical Cgroups | 95 | Hierarchical Cgroups |
| 96 | ==================== | 96 | ==================== |
| @@ -286,28 +286,28 @@ Throttling/Upper limit policy files | |||
| 286 | specified in bytes per second. Rules are per deivce. Following is | 286 | specified in bytes per second. Rules are per deivce. Following is |
| 287 | the format. | 287 | the format. |
| 288 | 288 | ||
| 289 | echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.read_bps_device | 289 | echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.throttle.read_bps_device |
| 290 | 290 | ||
| 291 | - blkio.throttle.write_bps_device | 291 | - blkio.throttle.write_bps_device |
| 292 | - Specifies upper limit on WRITE rate to the device. IO rate is | 292 | - Specifies upper limit on WRITE rate to the device. IO rate is |
| 293 | specified in bytes per second. Rules are per deivce. Following is | 293 | specified in bytes per second. Rules are per deivce. Following is |
| 294 | the format. | 294 | the format. |
| 295 | 295 | ||
| 296 | echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.write_bps_device | 296 | echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.throttle.write_bps_device |
| 297 | 297 | ||
| 298 | - blkio.throttle.read_iops_device | 298 | - blkio.throttle.read_iops_device |
| 299 | - Specifies upper limit on READ rate from the device. IO rate is | 299 | - Specifies upper limit on READ rate from the device. IO rate is |
| 300 | specified in IO per second. Rules are per deivce. Following is | 300 | specified in IO per second. Rules are per deivce. Following is |
| 301 | the format. | 301 | the format. |
| 302 | 302 | ||
| 303 | echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.read_iops_device | 303 | echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.throttle.read_iops_device |
| 304 | 304 | ||
| 305 | - blkio.throttle.write_iops_device | 305 | - blkio.throttle.write_iops_device |
| 306 | - Specifies upper limit on WRITE rate to the device. IO rate is | 306 | - Specifies upper limit on WRITE rate to the device. IO rate is |
| 307 | specified in io per second. Rules are per deivce. Following is | 307 | specified in io per second. Rules are per deivce. Following is |
| 308 | the format. | 308 | the format. |
| 309 | 309 | ||
| 310 | echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.write_iops_device | 310 | echo "<major>:<minor> <rate_io_per_second>" > /cgrp/blkio.throttle.write_iops_device |
| 311 | 311 | ||
| 312 | Note: If both BW and IOPS rules are specified for a device, then IO is | 312 | Note: If both BW and IOPS rules are specified for a device, then IO is |
| 313 | subjectd to both the constraints. | 313 | subjectd to both the constraints. |
