MarkText - free minimalistic desktop markdown editor

Mikhail Rumpel — Wed, 14 Sep 2022 09:29:14 +0000

After Typora being pay-ware, i stopped to use offline editor (only Obsidian still in use). My requirements was very short:

Visual styles of markdown text (WYSIWYG)
Shortcuts for basic word-like operations
freeware
not too bloat

And I didn find any software except Typora!
Now I restart my research and found MarkText

It is just cool!

Easy. Pretty. No ugly preview, just easy editor box.

Thanks, Luo Ran and contributors!

First usage golang benchmarks in Ubuntu WSL

Mikhail Rumpel — Wed, 27 Jul 2022 13:22:38 +0000

Hi there!

Some days ago I first time faces with benchmarks in go and did hands-on for my class. If you use Windows + WSL Ubuntu for Golang, my experience would be useful for you.

I faced couple of problems with components, lets talk about

No Graphvis for pprof

I made my first profile

$ go test -bench=BenchmarkGetDomainStat -cpuprofile=cpu -memprofile=mem
$ go tool pprof -http="localhost:8080" cpu

Serving web UI on http://localhost:8080
Failed to execute dot. Is Graphviz installed?
exec: "dot": executable file not found in $PATH

There is no Graphviz. Google it up, we have to install graphviz:

$ sudo apt install graphviz gv

If you get some fails like I:

E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/g/ghostscript/ghostscript-x_9.26~dfsg+0-0ubuntu0.18.04.15_amd64.deb  404  Not Found [IP: 91.189.91.38 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

just update and repeat:

$ sudo apt-get update
$ sudo apt install graphviz gv

Whoa! You have your graphviz and pprof ready to show you cool graphs.

No benchstat

I installed Go 1.17.1 and forget about anything. But in case of benchmarks i want to compare two results:

$ benchstat benchmarks/00 benchmarks/01
benchstat: command not found

WTF? there is no benchstat installed by default, lets fix it:

$ go get golang.org/x/perf/cmd/benchstat
go: downloading golang.org/x/perf v0.0.0-20220722155240-3d85ee92886d
go get: added golang.org/x/perf v0.0.0-20220722155240-3d85ee92886d

also go get informs me about deprecating and offers to use 'go install'. Good idea for trying next time

Now lets check result:

$ benchstat benchmarks/00 benchmarks/01
name             old time/op  new time/op  delta
GetDomainStat-8   1.15s ±75%   0.36s ±11%  -69.05%  (p=0.000 n=10+10)

Cool, benchstat is avaible and my optimizations work well

I hope my googling is helpful and will save few minutes for you, my dear Windows WSL gophers!

DEV Community: Mikhail Rumpel

MarkText - free minimalistic desktop markdown editor

First usage golang benchmarks in Ubuntu WSL

No Graphvis for pprof

No benchstat