Am 13.06.2017 um 05:40 schrieb Brent Jones: > Yes, getting a lot of the following messages: > > Jun 13 12:57:38 nfsen nfsen[14798]: Behind schedule > Jun 13 13:03:37 nfsen nfsen[14798]: Behind schedule > Jun 13 13:09:09 nfsen nfsen[14798]: Behind schedule
Yup, that's what I meant.
> Post CPU upgrade, CPU usage is remaining under 20% on average but the nfdump
> process hits 100% pretty regularily
One point is tuning the following in nfsen.conf:
#
# The number of nfprofile processes
$PROFILERS = 24;
Keep in mind that some CPUs might be "hyperthreaded"
which is not so fine.
I have 48 "cpus" in "top" so that setting above is reasonable.
> The disks are SSD over NFS. I haven't seen anything telling in the iowait but
> seems the next best target. I may have to look into using the local storage
> over NFS-SSD but I think these are 15k disks :(
I got my boost using the SSDs locally instead of
15k disks locally.
For NFS I would say "not recommended".
What also might help, specially when you
use the webinterface to analyze data is
to have enough RAM. 4GB sounds poor.
I have 128G.
So my flownumbers go up to 160kflows/s
and the system is just fast enough.
--
Dipl.-Phys. Jens Hektor, Networks
IT Center, RWTH Aachen University
Room 2.04, Wendlingweg 10, 52074 Aachen (Germany)
Phone: +49 241 80 29206 - Fax: +49 241 80 22100
http://www.itc.rwth-aachen.de - hek...@itc.rwth-aachen.de
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