diff options
Diffstat (limited to 'Documentation/cgroups/blkio-controller.txt')
-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. |