[Gluster-users] Gluster performance / Dell Idrac enterprise conflict

[Ryan Wilkinson]

I've tested about 12 different Dell servers.  Ony a couple of them have
Idrac express and all the others have Idrac Enterprise.  All the boxes with
Enterprise perform poorly and the couple that have express perform well.  I
use the disks in raid mode on all of them.  I've tried a few non-Dell boxes
and they all perform well even though some of them are very old.  I've also
tried disabling Idrac, the Idrac nic, virtual storage for Idrac with no
sucess..

On Mon, Feb 26, 2018 at 9:28 AM, Serkan Çoban <cobanserkan at gmail.com> wrote:

> I don't think it is related with iDRAC itself but some configuration
> is wrong or there is some hw error.
> Did you check battery of raid controller? Do you use disks in jbod
> mode or raid mode?
>
> On Mon, Feb 26, 2018 at 6:12 PM, Ryan Wilkinson <ryanwilk at gmail.com>
> wrote:
> > Thanks for the suggestion.  I tried both of these with no difference in
> > performance.I have tried several other Dell hosts with Idrac Enterprise
> and
> > getting the same results.  I also tried a new Dell T130 with Idrac
> express
> > and was getting over 700 MB/s.  Any other users had this issues with
> Idrac
> > Enterprise??
> >
> >
> > On Thu, Feb 22, 2018 at 12:16 AM, Serkan Çoban <cobanserkan at gmail.com>
> > wrote:
> >>
> >> "Did you check the BIOS/Power settings? They should be set for high
> >> performance.
> >> Also you can try to boot "intel_idle.max_cstate=0" kernel command line
> >> option to be sure CPUs not entering power saving states.
> >>
> >> On Thu, Feb 22, 2018 at 9:59 AM, Ryan Wilkinson <ryanwilk at gmail.com>
> >> wrote:
> >> >
> >> >
> >> > I have a 3 host gluster replicated cluster that is providing storage
> for
> >> > our
> >> > RHEV environment.  We've been having issues with inconsistent
> >> > performance
> >> > from the VMs depending on which Hypervisor they are running on.  I've
> >> > confirmed throughput to be ~9Gb/s to each of the storage hosts from
> the
> >> > hypervisors.  I'm getting ~300MB/s disk read spead when our test vm is
> >> > on
> >> > the slow Hypervisors and over 500 on the faster ones.  The performance
> >> > doesn't seem to be affected much by the cpu, memory that are in the
> >> > hypervisors.  I have tried a couple of really old boxes and got over
> 500
> >> > MB/s.  The common thread seems to be that the poorly perfoming hosts
> all
> >> > have Dell's Idrac 7 Enterprise.  I have one Hypervisor that has Idrac
> 7
> >> > express and it performs well.  We've compared system packages and
> >> > versions
> >> > til we're blue in the face and have been struggling with this for a
> >> > couple
> >> > months but that seems to be the only common denominator.  I've tried
> on
> >> > one
> >> > of those Idrac 7 hosts to disable the nic, virtual drive, etc, etc.
> but
> >> > no
> >> > change in performance.  In addition, I tried 5 new hosts and all are
> >> > complying to the Idrac enterprise theory.  Anyone else had this
> issue?!
> >> >
> >> >
> >> >
> >> > _______________________________________________
> >> > Gluster-users mailing list
> >> > Gluster-users at gluster.org
> >> > http://lists.gluster.org/mailman/listinfo/gluster-users
> >
> >
>
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