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Felix Geisendörfer 2021-09-17 09:03:44 +02:00
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guide/README.md
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@ -287,7 +287,7 @@ The pseudo code below should capture the essential aspects of the memory profile
```
func malloc(size):
object = ... // allocator magic
object = ... // allocation magic
if poisson_sample(size):
s = stacktrace()
@ -307,7 +307,7 @@ func sweep(object):
mem_profile[s].frees++
mem_profile[s].free_bytes += sizeof(object)
// gc free object
// deallocation magic
```
The `free_*` counters themselves are not included in the final memory profile. Instead they are used to calculate the `insue_*` counters in the profile via simple `allocs - frees` subtraction. Additionally the final output values are scaled by dividing them through their sampling probability.
@ -344,5 +344,6 @@ Notes:
- pprof: Maybe host a service to convert perf.data files into pprof files?
- Reuse cute gophers from conf talks.
- pprof cli tips from rhys h. on gopher slack: Favorite options include edgefraction=0, nodefraction=0, and nodecount of something larger than 80 (but rendering gets slow). Plus focus, and an ever-growing regexp (as I dive in to the profile) in ignore.
- https://profiler.firefox.com/ can view linux perf files? With time axis? see https://www.markhansen.co.nz/profiler-uis/
-->