| i synthesize instructions events | |
| b synthesize branches events | |
| c synthesize branches events (calls only) | |
| r synthesize branches events (returns only) | |
| x synthesize transactions events | |
| w synthesize ptwrite events | |
| p synthesize power events | |
| o synthesize other events recorded due to the use | |
| of aux-output (refer to perf record) | |
| e synthesize error events | |
| d create a debug log | |
| g synthesize a call chain (use with i or x) | |
| l synthesize last branch entries (use with i or x) | |
| s skip initial number of events | |
| The default is all events i.e. the same as --itrace=ibxwpe, | |
| except for perf script where it is --itrace=ce | |
| In addition, the period (default 100000, except for perf script where it is 1) | |
| for instructions events can be specified in units of: | |
| i instructions | |
| t ticks | |
| ms milliseconds | |
| us microseconds | |
| ns nanoseconds (default) | |
| Also the call chain size (default 16, max. 1024) for instructions or | |
| transactions events can be specified. | |
| Also the number of last branch entries (default 64, max. 1024) for | |
| instructions or transactions events can be specified. | |
| It is also possible to skip events generated (instructions, branches, transactions, | |
| ptwrite, power) at the beginning. This is useful to ignore initialization code. | |
| --itrace=i0nss1000000 | |
| skips the first million instructions. |