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From: Huai-En Tseng <the@csie.io>
To: Fred.L.Templin@boeing.com
Cc: users@dpdk.org
Subject: Re: [dpdk-users] DPDK-20.11 and HUGEPAGES
Date: Thu, 27 May 2021 10:05:27 +0800
Message-ID: <4C3EA377-DBCC-4AD1-989C-4A0A107F2288@csie.io> (raw)
In-Reply-To: <mailman.14682.1622060840.25471.users@dpdk.org>

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

       reply	other threads:[~2021-05-27  2:05 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <mailman.14682.1622060840.25471.users@dpdk.org>
2021-05-27  2:05 ` Huai-En Tseng [this message]
2021-05-27 11:49 Templin (US), Fred L
  -- strict thread matches above, loose matches on Subject: below --
2021-05-26 18:12 Templin (US), Fred L

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