go-perf | Go packages and tools for Linux perf | Monitoring library
kandi X-RAY | go-perf Summary
kandi X-RAY | go-perf Summary
go-perf is a set of tools for working with Linux perf.data profiles, as well as a set of Go packages for parsing and interpreting such profiles.
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Top functions reviewed by kandi - BETA
- process parses a single file .
- Tokenize returns a list of tokens .
- New creates a File from an io . Reader .
- fillRanges iterates over a dfs . Ranges .
- cleanVals removes all literal expressions from lits .
- readFileAttr reads the file attr .
- getSymbolicExtra returns the symbolicExtra object associated with the given filename .
- dwFuncTable returns a list of function ranges .
- writeStringer writes string format to w .
- decodeDataSrc decodes data source code .
go-perf Key Features
go-perf Examples and Code Snippets
Community Discussions
Trending Discussions on go-perf
QUESTION
I tried to calculate the time a Go app takes to start up and accept requests. I tried to do it using:
...ANSWER
Answered 2021-May-03 at 07:37The easiest, which should be good enough for most cases, would be something like this:
QUESTION
I am trying to retrieve some data from cloud Firestore using flutter. I used the circularprogress indicator to show that it is still getting data , but it keeps on going as if it is not receiveing any data. I am new to flutter so I have no clue why this is happening and I've tried everything (probably it has something to do with setting state but I am not really clear with that concept)
I am not getting any error , but the app isn't getting the info from the Firestore database. Sharing the full code
Full Code
...ANSWER
Answered 2020-Oct-22 at 17:32I would suggest sticking to the way it's done in the docs, especially if you are new to firestore.
Not only will this actually work but it will also be more efficient and easier when handling changes.
Here is your code modified, hope this works for you:
QUESTION
I want to write controllers logic and handle json and databases in Golang, while having my math processing model in C. In my opinion overhead calling C function have to be as low, as as setting registers rcx, rdx, rsi, rdi, doin some fastcall and getting out rax value. But i've heard of big overhead in cgo
Say it I have common fastcall x64 c function int64 f(int64 a,b,c,d){return a+b+c+d} How can I call it from go, to get a highest potential benchmark score in go testing.B benchmark?
PS no pointer passing, no tricks, just interested in how to access C interface in most robust way
...ANSWER
Answered 2020-Mar-18 at 02:37package main
// #include
// int64_t f(int64_t a, int64_t b, int64_t c, int64_t d) {return a+b+c+d; }
import "C"
import (
"fmt"
"math/rand"
"time"
)
func f(a, b, c, d int64) int64 {
return a + b + c + d
}
func main() {
start := time.Now()
for i := 1; i < 2000; i++ {
a, b, c, d := rand.Int63(), rand.Int63(), rand.Int63(), rand.Int63()
ans_c := int64(C.f((C.int64_t)(a), (C.int64_t)(b), (C.int64_t)(c), (C.int64_t)(d)))
ans_c = ans_c
}
fmt.Printf("cgo time %v\n", time.Since(start))
start = time.Now()
for i := 1; i < 2000; i++ {
a, b, c, d := rand.Int63(), rand.Int63(), rand.Int63(), rand.Int63()
ans_go := f(a, b, c, d)
ans_go = ans_go
}
fmt.Printf("go time %v\n", time.Since(start))
}
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