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This repository was archived by the owner on Jan 17, 2025. It is now read-only.
[SPE] Add --dump-raw-trace support in wperf record #62
Description
Description
We can add new command line option for wperf sample / record with SPE is used, --dump-raw-trace.
We already have SPE raw buffer parser which can detect packets and records. We also store spe.data buffer which contains this buffer.
Example raw SPE fill buffer text output could be:
Output will contain raw SPE data and its textual representation, such as:
0xc7d0 [0x30]: PERF_RECORD_AUXTRACE size: 0x82f70 offset: 0 ref: 0x1e947e88189 idx: 0 tid: -1 cpu: 2
.
. ... ARM SPE data: size 536432 bytes
. 00000000: 4a 01 B COND
. 00000002: b1 00 00 00 00 00 00 00 80 TGT 0 el0 ns=1
. 0000000b: 42 42 RETIRED NOT-TAKEN
. 0000000d: b0 20 41 c0 ad ff ff 00 80 PC ffffadc04120 el0 ns=1
. 00000016: 98 00 00 LAT 0 TOT
. 00000019: 71 80 3e f7 46 e9 01 00 00 TS 2101429616256
. 00000022: 49 01 ST
. 00000024: b2 50 bd ba 73 00 80 ff ff VA ffff800073babd50
. 0000002d: b3 50 bd ba f3 00 00 00 80 PA f3babd50 ns=1
. 00000036: 9a 00 00 LAT 0 XLAT
. 00000039: 42 16 RETIRED L1D-ACCESS TLB-ACCESS
. 0000003b: b0 8c b4 1e 08 00 00 ff ff PC ff0000081eb48c el3 ns=1
. 00000044: 98 00 00 LAT 0 TOT
. 00000047: 71 cc 44 f7 46 e9 01 00 00 TS 2101429617868
. 00000050: 48 00 INSN-OTHER
. 00000052: 42 02 RETIRED
. 00000054: b0 58 54 1f 08 00 00 ff ff PC ff0000081f5458 el3 ns=1
. 0000005d: 98 00 00 LAT 0 TOT
. 00000060: 71 cc 44 f7 46 e9 01 00 00 TS 2101429617868
Note: this function can be used in the future also in
wperf report- a new feature we can add in the future.
See example from perf tools: Add ARM Statistical Profiling Extensions (SPE) support.
Definition of done
- Add new command line option
--dump-raw-trace. - Add parser output to SPE JSON (sampling) output.
- [TBD] Add raw
spe.bufferto SPE JSON (sampling) output. - Verify output from this implementation with
spe-parserprovided with Telemetry Solution. You can find spe-parser in TS Gitlab repo.- Note:
spe-parsershould have new option-r/--raw-bufferthat will treat input file
as a raw SPE fill buffer content. It will allow you to output for the samespe.datafile SPE packets.
- Note:
Activity