STRUCTS
CallStat
Defined in fuchsia.storage.metrics/storage-metrics.fidl
| Field | Type | Description | Default |
|---|---|---|---|
success |
CallStatRaw
|
CallStat keeps track of the successful commands and failed commands seperately as successful commands may generate completely different stats than failed commands - a write() to read-only file handle may fail in nanoseconds and if the stats tracked together, it will skew the numbers. |
No default |
failure |
CallStatRaw
|
No default |
CallStatRaw
Defined in fuchsia.storage.metrics/storage-metrics.fidl
Stats for calls. These stats track completed calls - they may or may not have succeeded. Unless specified otherwise , time units are in nanoseconds and data transferred is in bytes
| Field | Type | Description | Default |
|---|---|---|---|
minimum_latency |
uint64
|
Minimum time taken by a request to be served. |
No default |
maximum_latency |
uint64
|
Maximum time taken by a request to be served. |
No default |
total_time_spent |
uint64
|
Total time spent to serve requests. |
No default |
total_calls |
uint64
|
Total number of calls. |
No default |
bytes_transferred |
uint64
|
byte_transferred may mean different things in different context. For example, read and write may use it for bytes read/written, whereas create/lseek may use bytes_transferred for file name length or number of bytes lseek-ed from current position. bytes_transferred has special meaning if the succeeded or failed. On success: Partitally succeeded calls, bytes fetched is less than bytes requested, can be considered as successful. To keep latency and time_spent numbers accurate, on success, bytes transferred is number bytes returned to caller. It is NOT the number of bytes fetched from underlying subsystem and it is NOT number of bytes requested by the caller. On failure: On failure, bytes_transferred is the number of bytes requested by the caller. |
No default |
FsMetrics
Defined in fuchsia.storage.metrics/storage-metrics.fidl
| Field | Type | Description | Default |
|---|---|---|---|
create |
CallStat
|
Call stats for create |
No default |
read |
CallStat
|
Call stats for read |
No default |
write |
CallStat
|
Call stats for write |
No default |
truncate |
CallStat
|
Call stats for truncate |
No default |
unlink |
CallStat
|
Call stats for unlink |
No default |
rename |
CallStat
|
Call stats for rename |
No default |
lookup |
CallStat
|
Call stats for directory lookups |
No default |
open |
CallStat
|
Call stats for open. This may or may not include directory lookup during open |
No default |