Lines Matching +full:sync +full:- +full:read
21 -----------------------------
22 - Enable Block IO controller::
26 - Enable throttling in block layer::
30 - Mount blkio controller (see cgroups.txt, Why are cgroups needed?)::
32 mount -t cgroup -o blkio none /sys/fs/cgroup/blkio
34 - Specify a bandwidth rate on particular device for root group. The format
42 - Run dd to read a file and see if rate is throttled to 1MB/s or not::
83 - Block IO controller.
86 - Debug help. Right now some additional stats file show up in cgroup
90 - Enable block device throttling support in block layer.
95 --------------------------------
96 - blkio.weight
97 - Specifies per cgroup weight. This is default weight of the group
102 - blkio.weight_device
103 - One can specify per cgroup per device rules using this interface.
133 - blkio.time
134 - disk time allocated to cgroup per device in milliseconds. First
139 - blkio.sectors
140 - number of sectors transferred to/from disk by the group. First
145 - blkio.io_service_bytes
146 - Number of bytes transferred to/from the disk by the group. These
147 are further divided by the type of operation - read or write, sync
152 - blkio.io_serviced
153 - Number of IOs (bio) issued to the disk by the group. These
154 are further divided by the type of operation - read or write, sync
159 - blkio.io_service_time
160 - Total amount of time between request dispatch and request completion
168 the type of operation - read or write, sync or async. First two fields
173 - blkio.io_wait_time
174 - Total amount of time the IOs for this cgroup spent waiting in the
181 (there might be a time lag here due to re-ordering of requests by the
183 devices too. This time is further divided by the type of operation -
184 read or write, sync or async. First two fields specify the major and
188 - blkio.io_merged
189 - Total number of bios/requests merged into requests belonging to this
190 cgroup. This is further divided by the type of operation - read or
191 write, sync or async.
193 - blkio.io_queued
194 - Total number of requests queued up at any given instant for this
195 cgroup. This is further divided by the type of operation - read or
196 write, sync or async.
198 - blkio.avg_queue_size
199 - Debugging aid only enabled if CONFIG_BFQ_CGROUP_DEBUG=y.
204 - blkio.group_wait_time
205 - Debugging aid only enabled if CONFIG_BFQ_CGROUP_DEBUG=y.
211 read when the cgroup is in a waiting (for timeslice) state, the stat
215 - blkio.empty_time
216 - Debugging aid only enabled if CONFIG_BFQ_CGROUP_DEBUG=y.
220 nanoseconds. If this is read when the cgroup is in an empty state,
224 - blkio.idle_time
225 - Debugging aid only enabled if CONFIG_BFQ_CGROUP_DEBUG=y.
228 from other queues/cgroups. This is in nanoseconds. If this is read
233 - blkio.dequeue
234 - Debugging aid only enabled if CONFIG_BFQ_CGROUP_DEBUG=y. This
240 - blkio.*_recursive
241 - Recursive version of various stats. These files show the
242 same information as their non-recursive counterparts but
246 -----------------------------------
247 - blkio.throttle.read_bps_device
248 - Specifies upper limit on READ rate from the device. IO rate is
254 - blkio.throttle.write_bps_device
255 - Specifies upper limit on WRITE rate to the device. IO rate is
261 - blkio.throttle.read_iops_device
262 - Specifies upper limit on READ rate from the device. IO rate is
268 - blkio.throttle.write_iops_device
269 - Specifies upper limit on WRITE rate to the device. IO rate is
278 - blkio.throttle.io_serviced
279 - Number of IOs (bio) issued to the disk by the group. These
280 are further divided by the type of operation - read or write, sync
285 - blkio.throttle.io_service_bytes
286 - Number of bytes transferred to/from the disk by the group. These
287 are further divided by the type of operation - read or write, sync
293 -----------------------------------
294 - blkio.reset_stats
295 - Writing an int to this file will result in resetting all the stats