But why? Why does it matter if you are in the same dir or not when you glob?
On Mon, Dec 4, 2017, 20:34 Gabriel Forster <gabejessfors...@gmail.com>
wrote:
> Ding ding ding! We have a winner! Thank you so much. That made a huge
> difference. It is now running ~20 seconds.
>
> The key is being in the same directory.
>
>
> On Monday, December 4, 2017 at 2:17:03 PM UTC-5, Patrick Smith wrote:
>
>> 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 <gabejes...@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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