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bert
2012 Aug 24
3
R minimal calculation error
...ks like
this:
x=mean(a+b+c+d ...)
a=a-x
b=b-x
c=c-x
d=d-x
...
mean(a+b+c+d ...) ---> Should now be 0!
However, I'm getting results like -2.315223e-18
This is really near to 0 but not very aesthetic.
Can I prevent this? Or is this behaviour desired?
Thank you very much!
Burtan
--
Frederik Bertling
Steinhausenstr. 37, 45147 Essen, Deutschland
Mobil: 017661103480*
*
[[alternative HTML version deleted]]
2008 Jun 22
6
ZFS-Performance: Raid-Z vs. Raid5/6 vs. mirrored
...a very large number of
vdevs in your pool.
A further question that springs to mind is if copies=N is also used to
improve read performance. If so, you could have some read-optimized
filesystems in a pool while others use maximum storage efficiency (as
for backups).
Regards,
ralf
--
Ralf Bertling
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2004 Oct 28
8
2 external IPs on one nic in addition to the regular DMZ and loc nics
I did some looking on the mailing list archives and can''t seem to find
exactly what I need, I''m also having troubles figuring this out on my
own, so if anyone has any advice, tips, whatever, that would be great.
I''ve got a machine with 3 network cards in it, one for a DMZ (with 3
machines on a switch each with a real IP address), one for the local
network on a