SABnzbd Forums

I don’t know why but when sabnzb starts to unrar a large file it takes for ever and uses 100% disk usage
Does anyone else have this problem and any ideas what I need to do.
Thanks for any help and suggestions

SAB only calls unrar-application to do the job, it's really highly optimized by the creators.
It is most likely something on your system:
Virusscanner (exclude temporary download location from scanning)
Bad sectors on disk (try other disk)
Try setting 'Pause downloading during post-processing' in Config > Switches.

I don’t know why but when sabnzb starts to unrar a large file it takes for ever

That's a long time!

and uses 100% disk usage

Disk full? Is your disk too small?
Don't you mean 100% CPU?

unrar is a lightweight process. With Direct Unpack it often happens during the download, and there is no extra time involved at all.

Wait: you're not confusing unrar (unpacking) with par2 (=repairing), I hope? par2 is heavy, takes time and takes CPU power.

After a download, you can see the numbers: in History, on the far right, there is a down-arrow. If you click on it, you get the statistics. For example:

DownloadDownloaded in 2 mins 21 seconds at an average of 4.8 MB/s
Age: 164d
Serversnewszilla.xs4all.nl=23 KB, news.solani.org=24 KB, newszilla6.xs4all.nl=23 KB, newsreader3.eweka.nl=676.7 MB
Repair[bigrandomfile-666MB.bin] Quick Check OK
Unpack[bigrandomfile-666MB.bin] Direct Unpack - Unpacked 1 files/folders in 11 seconds

So 0 seconds repair (=par2), 11 seconds unpack (=unrar).

So, with your for-ever-100%-disk space download ... what are the statistics?

After switch to 'Pause downloading during post-processing
And turning off services for
SuperFetch
Indexing
Windowssearch


Name
Dead.Men.2018.1080p.WEB-DL.DD5.1.H264-FGT-postbot
Completed
3 hours ago
Status
Completed
Size
6.9 GB
Category
movies
Path
C:\DOWNLOADS\Complete\Dead.Men.2018.1080p.WEB-DL.DD5.1.H264-FGT-postbot\dc14a7309fb4486785801e3e6d4f400d.mkv
Source
Dead.Men.2018.1080p.WEB-DL.DD5.1.H264-FGT-postbot.nzb
Download
Downloaded in 3 hours 40 mins 3 seconds at an average of 546 KB/s
Age: 15h
Servers
eu.news.astraweb.com=1.9 GB, europe.newsdemon.com=1.8 GB, news.newsdemon.com=1.7 GB, us.news.astraweb.com=1.7 GB
Repair
[dc14a7309fb4486785801e3e6d4f400d] Quick Check OK
Unpack
[dc14a7309fb4486785801e3e6d4f400d] Unpacked 1 files/folders in 1 min 54 seconds

Everything is working ok again
Thanks for your help