diff options
Diffstat (limited to 'lket.5.in')
| -rw-r--r-- | lket.5.in | 27 |
1 files changed, 16 insertions, 11 deletions
@@ -100,26 +100,30 @@ You could use to trace the IO scheduler activities. It contains three sub event hooks: .P .TP -.B addevent.ioscheduler.elv_next_request (HOOKID=1) -Trace when a request is retrieved from request queue +.B addevent.ioscheduler.elv_add_request (HOOKID=1) +Trace when a request is added to the request queue Data format is: -.I common_data, elevator_name(STRING), disk_major(INT8), disk_minor(INT8) +.I common_data, elevator_name(STRING), disk_major(INT8), disk_minor(INT8), +.I request(INT64), request_flags(INT64) .TP -.B addevent.ioscheduler.elv_add_request (HOOKID=2) -Trace when a request is added to the request queue +.B addevent.ioscheduler.elv_next_request (HOOKID=2) +Trace when a request is retrieved from request queue Data format is: -.I common_data, elevator_name(STRING), disk_major(INT8), disk_minor(INT8) +.I common_data, elevator_name(STRING), disk_major(INT8), disk_minor(INT8), +.I request(INT64), request_flags(INT64) + .TP .B addevent.ioscheduler.elv_completed_request (HOOKID=3) Trace when a request is completed Data format is: -.I common_data, elevator_name(STRING), disk_major(INT8), disk_minor(INT8) +.I common_data, elevator_name(STRING), disk_major(INT8), disk_minor(INT8), +.I request(INT64), request_flags(INT64) .SS TASK SCHEDULE ACTIVITIES (GROUPID=5) You could use @@ -152,7 +156,7 @@ mid-layer prepares a IO request Data format is: -.I common_data, disk_major(INT8), disk_minor(INT8), device_state(INT8) +.I common_data, disk_major(INT8), disk_minor(INT8), device_state(INT8), request(INT64) .TP .B addevent.scsi.iodispatching (HOOKID=2) Dispatch a command to the low-level driver @@ -160,7 +164,7 @@ Dispatch a command to the low-level driver Data format is: .I common_data, device_state(INT8), scsi_info(INT32), data_direction(INT8), -.I reqbuf_addr(INT64), reqbuf_len(INT32), cmd_identifier(INT64) +.I reqbuf_addr(INT64), reqbuf_len(INT32), cmd_identifier(INT64), request(INT64) Where .I scsi_info @@ -179,7 +183,8 @@ I/O is done by low-level driver Data format is: -.I common_data, scsi_info(INT32), data_direction(INT8), cmd_identifier(INT64) +.I common_data, scsi_info(INT32), data_direction(INT8), cmd_identifier(INT64), +.I request(INT64) .TP .B addevent.scsi.iocompleted (HOOKID=4) mid-layer processed the completed IO @@ -187,7 +192,7 @@ mid-layer processed the completed IO Data format is: .I common_data, scsi_info(INT32), data_direction(INT8), cmd_identifier(INT64), -.I bytes_done(INT32) +.I bytes_done(INT32), request(INT64) .SS PAGE FAULT (GROUPID=7) You could use |