Does it make a difference if you first change directory to
/var/spool/directory, then glob * and unlink the resulting filenames,
without prepending the directory?
On Mon, Dec 4, 2017 at 11:05 AM, Gabriel Forster <gabejessfors...@gmail.com>
wrote:
> Readdirnames wasn't much better. Now using globbing and syscall.Unlink
> which take ~1minute 30seconds. It is much better, but still a long way from
> perl's sub-20 seconds.
>
> package main
>
> import (
> "fmt"
> "path/filepath"
> "syscall"
> )
>
> func main() {
>
> upperDirPattern := "/var/spool/directory/*"
> matches, err := filepath.Glob(upperDirPattern)
>
> if err != nil {
> fmt.Println(err)
> }
>
> for _, file := range matches {
> syscall.Unlink(file)
> }
> }
>
>
>
> On Monday, December 4, 2017 at 12:50:54 PM UTC-5, Gabriel Forster wrote:
>>
>> What takes 18 seconds in a perl command:
>> perl -e 'for(<*>){((stat)[9]<(unlink))}'
>>
>> is taking almost 8 minutes with the following code. Any ideas how I can
>> speed this up?
>>
>> dir, err := os.Open("/var/spool/directory")
>> if err != nil {
>> fmt.Fprintf(w, "failed - " + err.Error())
>> return
>> }
>> defer dir.Close()
>>
>>
>> files, err := dir.Readdir(-1)
>> if err != nil {
>> fmt.Fprintf(w, "failed - " + err.Error())
>> return
>> }
>>
>> for _, file := range files {
>> if file.Name() == "." || file.Name() == ".." {
>> continue
>> }
>>
>> os.Remove("/var/spool/directory/" + file.Name())
>> }
>>
>>
>> fmt.Fprintf(w, "success")
>>
>>
>> --
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