Re: [gentoo-user] NAS and replacing with larger drives

[Mark Knecht <markknecht@gmail.com>]

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On Sun, Dec 18, 2022 at 8:13 AM Dale <rdalek1967@gmail.com> wrote:
>
> Well, I finally got it so I could do a backup.  I didn't need a hammer
but the thought crossed my mind.  lol  Even tho I now have a 1GB network
card, it's still really slow.  It shows up as a 1GB connection on both my
Gentoo machine and the NAS machine.  This is a example of the speeds I'm
seeing.  Just snippets.
>
>
> 277,193,507 100%   16.18MB/s    0:00:16
> 519,216,571 100%   18.86MB/s    0:00:26
> 738,078,565 100%   23.54MB/s    0:00:29
>
>
> As you can see, the files sizes are large enough it should do better.
When I use iftop, it shows it isn't doing anywhere near the speed it
should, maybe 1/4th or so.  I'd expect at least double or triple that
speed.  In all honesty, I'd think the hard drive would be the limiting
factor.  Even on my Gentoo rig I only get about 50 to 60MBs/sec for
encrypted drives.  I think the encryption slows that down.  When copying
from a plain drive to a plain drive, I get 100MBs/sec or so.
>
> I can't figure out why it is so slow tho.  The NAS rig is a 4 core CPU
and 8GBs of memory.  It should have enough horsepower under the hood.
Maybe it is something I'm not aware of.  It is a older rig so maybe it
isn't SATA's fastest version, maybe even the original or something.  I
can't find anything in lspci or dmesg so not real sure where to look on
BSD.
>
> Anyway, it's progress for now at least.  ;-)  At this rate, it'll be done
in about a week, maybe.  o_O
>
> Dale
>

To what end Dale? Aren't you painting yourself into a corner with a system
you don't really want to run? Wipe the machine and start over from scratch
with Gentoo.

From my vantage point you don't provide enough information for me to make
an educated guess.

1) Is your data coming off the host machine able to transfer to other
machines at 1Gb/S type speeds?

2) Can data coming off of your NAS transfer to other machines at 1G/S type
speeds?

3) How are the two machines connected? If they are going through a router
or hub, do you know that hub doesn't limit throughput?

4) Is anything else happening on the network? Video flowing around while
people are watching TV or something?

5) CPU horsepower isn't the only potential bottleneck. Are your disks in
the NAS operating slowly? Are you running out of memory?

   Have you considered running something like iperf?

Mark

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