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* Re: [dpdk-users] DPDK-20.11 and HUGEPAGES
@ 2021-05-27 11:49 Templin (US), Fred L
  0 siblings, 0 replies; 3+ messages in thread
From: Templin (US), Fred L @ 2021-05-27 11:49 UTC (permalink / raw)
  To: Huai-En Tseng; +Cc: users

Thank you for your message. I will post the log after I return from visiting
the lab where the test environment is hosted later today.

Fred

> -----Original Message-----
> From: Huai-En Tseng [mailto:the@csie.io]
> Sent: Wednesday, May 26, 2021 7:05 PM
> To: Templin (US), Fred L <Fred.L.Templin@boeing.com>
> Cc: users@dpdk.org
> Subject: Re: [dpdk-users] DPDK-20.11 and HUGEPAGES
> 
> 
> Hi, DPDK can be executed under 2MB hugepages scenario, and 1GB hugepages is not necessary.
> 
> Could you paste the log?
> 
> >
> > Message: 2
> > Date: Wed, 26 May 2021 18:12:40 +0000
> > From: "Templin (US), Fred L" <Fred.L.Templin@boeing.com>
> > To: "users@dpdk.org" <users@dpdk.org>
> > Subject: [dpdk-users] DPDK-20.11 and HUGEPAGES
> > Message-ID: <dcf5a411d1b446e99cf69f871f16a695@boeing.com>
> > Content-Type: text/plain; charset="us-ascii"
> >
> > Hi, I have a test environment based on RHEL VMs that are run from a hypervisor
> > that I have no administrative or physical access to. My only administrative control
> > is by ssh into the running VMs over the network where at least I have sudo access.
> >
> > When I run my DPDK-20.11 application, it crashes because hugepages are not
> > configured. So, I allocated 2MB hugepages at runtime but the app still crashes
> > because there are no 1GB hugepages which on RHEL can only be set at boot time.
> >
> > I found instructions for setting RHEL boot parameters that will allocate 1GB
> > hugepages at boot time, but I have not tried it because I am concerned that
> > if I mess something up and reboot the VM it may never come back.
> >
> > So, I am wondering if DPDK-20.11 supports a "semi-huge" mode of operation
> > that allows it to run with only 2MB hugepages configured and no 1GB pages?
> > If so, what would be the way to set that up?
> >
> > I have also tried invoking DPDK with "--no-huge". My application starts fine,
> > but at runtime it crashes out of a DPDK API call while processing an mbuf
> > for a received packet. I can give more details about this if there is a chance
> > it could be debugged - or, is "--no-huge" problematic in general?
> >
> > Thanks - Fred
> >


^ permalink raw reply	[flat|nested] 3+ messages in thread
* [dpdk-users] DPDK-20.11 and HUGEPAGES
@ 2021-05-26 18:12 Templin (US), Fred L
  0 siblings, 0 replies; 3+ messages in thread
From: Templin (US), Fred L @ 2021-05-26 18:12 UTC (permalink / raw)
  To: users

Hi, I have a test environment based on RHEL VMs that are run from a hypervisor
that I have no administrative or physical access to. My only administrative control
is by ssh into the running VMs over the network where at least I have sudo access.

When I run my DPDK-20.11 application, it crashes because hugepages are not
configured. So, I allocated 2MB hugepages at runtime but the app still crashes
because there are no 1GB hugepages which on RHEL can only be set at boot time.

I found instructions for setting RHEL boot parameters that will allocate 1GB
hugepages at boot time, but I have not tried it because I am concerned that
if I mess something up and reboot the VM it may never come back.

So, I am wondering if DPDK-20.11 supports a "semi-huge" mode of operation
that allows it to run with only 2MB hugepages configured and no 1GB pages?
If so, what would be the way to set that up?

I have also tried invoking DPDK with "--no-huge". My application starts fine,
but at runtime it crashes out of a DPDK API call while processing an mbuf
for a received packet. I can give more details about this if there is a chance
it could be debugged - or, is "--no-huge" problematic in general?

Thanks - Fred


^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2021-05-27 11:49 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2021-05-27  2:05 ` [dpdk-users] DPDK-20.11 and HUGEPAGES Huai-En Tseng
2021-05-27 11:49 Templin (US), Fred L
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2021-05-26 18:12 Templin (US), Fred L

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