On Wednesday 20 November 2002 22:41, Gene Heskett wrote: Yeah, I know, I'm talking to myself :-) In some circles, thats considered to be 'poor form'. But, see below.
>On Wednesday 20 November 2002 17:36, Jean-Louis Martineau wrote: >>On Wed, Nov 20, 2002 at 01:47:50PM -0600, Deb Baddorf wrote: >>> What kind of optimiaztion does amanda use while flushing >>> dumps to tape? >>> >>> While doing the dump initially, she seems to >>> optimize to get the small jobs done first, and thus they >>> go onto tape in a similar order. But I'm currently without >>> a stacker. So only the first part of the dumps make it >>> to tape "live" (so to speak) and the rest get flushed as I >>> manually mount tapes. I'm hoping that some kind of >>> knapsack-packing algorithm is used ..... to fit the largest >>> files on the tape first, but then to add smaller ones to >>> fill the top of the "sack". >>> My archival "do all the level 0's" is taking up 5 tapes, >>> hence the optimization question! >> >>There is no optimazation, first in, first out. >>That's a need feature. >> >>Jean-Louis > >Humm, from a recent example/amanda.conf: >------------- >dumporder "sssS" # specify the priority order of each > dumper # s -> smallest size > # S -> biggest size > # t -> smallest time > # T -> biggest time > # b -> smallest bandwitdh > # B -> biggest bandwitdh > # try "BTBTBTBTBTBT" if you are not > holding # disk constrained >------------ >I'm assuming that when Deb asked about it, using the word >'flushing', that Deb meant a normal amdump run as opposed to a run >of amflush, or an autoflush. I've no idea whether its active for > a flush, or just an amdump run. I have no idea if it even works, > but I'll find out tonight if I can stay awake till then. I just > modified mine to do the biggest ones first, and amstatus should > be able to see if its working that way pretty shortly after the > estimates are done. Yes, its working according to an 'SSSsss' setting from the looks of it, it started with /usr/src, nearly the last entry in the disklist which is nearly 2.7 gigs ATM. It also tells me its going to skip 2 entries tonight as they are too big, 1.6gb of music and 90 megs of /usr/X11R6 will get delayed till tomorrow night. Obviously I'm just now getting amanda restarted after a disk crash. I suppose it will take a week to get back to 'normal', whatever that is... -- Cheers, Gene AMD K6-III@500mhz 320M Athlon1600XP@1400mhz 512M 99.19% setiathome rank, not too shabby for a WV hillbilly