Multithreaded isn't going to help. Think about what is going on during an archive and compress verses an archive only operation.
When you are compressing and archiving, the file data is read in a single thread (very low CPU needed), then divided up into chunks. These chunks can then be dispatched to multiple threads for compression, then another thread can collect the compressed chunks and write then in the correct order to the output. Since compression requires lots of CPU, multiple threads can give you big gains. Plus, your reader and writer threads can overlap operation with the compression threads effectively eliminating IO time from the equation. With archiving only, there isn't any work to divvy up for multiple threads to operate on. You have to read data, and write it in order. The limit is going to be how fast your IO subsystem can read data and write it back out. From: justino garcia [mailto:jgarciaitl...@gmail.com] Sent: Tuesday, March 26, 2013 4:27 PM To: NT System Admin Issues Subject: Re: Multithreaded tarbal or tar app for windows Yes faster operations. Trying to tar a 600 gig of data for legal... On Tue, Mar 26, 2013 at 4:15 PM, Ken Cornetet <ken.corne...@kimball.com<mailto:ken.corne...@kimball.com>> wrote: What are you trying to accomplish? Faster operation? Tar is going to be limited by how fast you can get data in and out. The cpu needed for a straight tar operation is miniscule. From: justino garcia [mailto:jgarciaitl...@gmail.com<mailto:jgarciaitl...@gmail.com>] Sent: Tuesday, March 26, 2013 4:08 PM To: NT System Admin Issues Subject: Multithreaded tarbal or tar app for windows Hi, I am trying to tar (archive) a lot of files Long list. I tried 7-zip but it won't do multi threading for tar only bzip and .7zip. Anyone have a good suggestion? Regards, Justino Garcia -- Justin IT-TECH ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin -- Justin IT-TECH ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
