perf report -g output
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# Samples: 3 of event 'probe_postgres:XLogFileInit' | |
# Event count (approx.): 3 | |
# | |
# Overhead Command Shared Object Symbol | |
# ........ ........ ............. ................ | |
# | |
100.00% postgres postgres [.] XLogFileInit | |
| | |
--- XLogFileInit | |
XLogWrite | |
| | |
|--66.67%-- XLogBackgroundFlush | |
| WalWriterMain | |
| AuxiliaryProcessMain | |
| StartChildProcess | |
| reaper | |
| __restore_rt | |
| __select | |
| ServerLoop | |
| PostmasterMain | |
| main | |
| __libc_start_main | |
| _start | |
| 0x0 | |
| | |
--33.33%-- XLogFlush | |
FlushBuffer | |
SyncOneBuffer | |
CheckPointBuffers | |
CreateCheckPoint | |
CheckpointerMain | |
AuxiliaryProcessMain | |
StartChildProcess | |
reaper | |
__restore_rt | |
__select | |
ServerLoop | |
PostmasterMain | |
main | |
__libc_start_main | |
_start | |
0x0 | |
# Samples: 0 of event 'probe_postgres:XLogFileOpen' | |
# Event count (approx.): 0 | |
# | |
# Overhead Command Shared Object Symbol | |
# ........ ....... ............. ...... | |
# | |
# Samples: 2K of event 'probe_postgres:XLogFlush' | |
# Event count (approx.): 2592 | |
# | |
# Overhead Command Shared Object Symbol | |
# ........ ........ ............. ............. | |
# | |
100.00% postgres postgres [.] XLogFlush | |
| | |
--- XLogFlush | |
| | |
|--99.96%-- FlushBuffer | |
| SyncOneBuffer | |
| | | |
| |--74.37%-- BgBufferSync | |
| | BackgroundWriterMain | |
| | AuxiliaryProcessMain | |
| | StartChildProcess | |
| | reaper | |
| | __restore_rt | |
| | __select | |
| | ServerLoop | |
| | PostmasterMain | |
| | main | |
| | __libc_start_main | |
| | _start | |
| | 0x0 | |
| | | |
| --25.63%-- CheckPointBuffers | |
| CreateCheckPoint | |
| CheckpointerMain | |
| AuxiliaryProcessMain | |
| StartChildProcess | |
| reaper | |
| __restore_rt | |
| __select | |
| ServerLoop | |
| PostmasterMain | |
| main | |
| __libc_start_main | |
| _start | |
| 0x0 | |
--0.04%-- [...] |
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