Jens, Kees, I think Shilly Tar, STAR is multi-threaded and that we use it with Amanda on at least one of our Amanda clients. Honestly don't recall (without checking the docs) if spindle is to group DLE's for concurrent backup, or to avoid running them concurrently, I think that latter. Be careful not to make the drive thrash, you may find you run into issues with head movement, or at least that had been the conventional wisdom in the past.
Brian -----Original Message----- From: owner-amanda-us...@amanda.org <owner-amanda-us...@amanda.org> On Behalf Of Jens Berg Sent: Tuesday, September 21, 2021 10:30 AM To: Kees Meijs | Nefos <k...@nefos.nl>; amanda-users@amanda.org Subject: Re: CPU eating tar process ATTENTION: This email came from an external source. Do not open attachments or click on links from unknown senders or unexpected emails. Hi Kees, maybe you can try to split up the files into several DLEs and put them into different spindles. That should fire off multiple instances of tar in parallel, if I understood Amanda's concept of spindles correctly. Hope it helps, Jens On 21.09.2021 15:55, Kees Meijs | Nefos wrote: > Hi list, > > We've got some backup targets with lots (and lots, and then some) of > files. There's so much of them that making back-ups is becoming a problem. > > During the backup process, tar(1) is eating up a CPU core. There's no or > hardly no I/O wait to be seen. Very likely tar is single threaded so > there's that. The additional gzip(1) process is doing zero to nothing. > > Any thoughts on speeding this up? Maybe an alternative for GNU tar, or...? > > Thanks all! > > Cheers, > Kees > > -- > https://protect2.fireeye.com/v1/url?k=2e3f7039-71a44928-2e3d890c-000babd9fe9f-58b29de2b7dad0ea&q=1&e=f3989b7d-8dbb-47cc-bef6-319b06eb43b0&u=https%3A%2F%2Fnefos.nl%2Fcontact > > <https://protect2.fireeye.com/v1/url?k=99e244fa-c6797deb-99e0bdcf-000babd9fe9f-d15805b2468198c5&q=1&e=f3989b7d-8dbb-47cc-bef6-319b06eb43b0&u=https%3A%2F%2Fnefos.nl%2Fcontact> > > Nefos IT bv > Ambachtsweg 25 (industrienummer 4217) > 5627 BZ Eindhoven > Nederland > > KvK 66494931 > > /Bereikbaar op maandag, dinsdag, donderdag en vrijdag tussen 09:00u en > 17:00u./
