I could. But, I already have on the order of 150 DLEs spread across several servers for each Amanda
server. Amanda's inherent multi-threading allows for multiple dumpers per server being backed up,
restricted by spindle number. So, typically, when Amanda fires off, I might have 6 or 8 dump
processes going, and I can juggle my configuration to adjust that. Under optimal circumstances,
those would be going on simultaneously with taping, and the SSDs would see all that action coming
and going. What I'm getting is that the tape is on the order of 10 times faster than the dump
process when gz is in the mix. So, the tape is seeing a lot of idle time. When gz is not in the mix,
the dump is significantly faster than the tape, though not double.
On 10/28/16 4:27 PM, Charles Curley wrote:
On Fri, 28 Oct 2016 15:44:09 -0400
Chris Hoogendyk <hoogen...@bio.umass.edu> wrote:
If it were "only" the Amanda server, I could go all out with pigz.
However, it is also the department server and runs mail, web, samba,
printing, etc. If I were to top out all the cores with pigz, I would
have everyone in the department complaining about performance on
other services.
Can you sneak in a -p option to pigz?
--
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Chris Hoogendyk
-
O__ ---- Systems Administrator
c/ /'_ --- Biology & Geosciences Departments
(*) \(*) -- 315 Morrill Science Center
~~~~~~~~~~ - University of Massachusetts, Amherst
<hoogen...@bio.umass.edu>
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Erdös 4
