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From: Thomas Monjalon <thomas@monjalon.net>
To: Jiany Wu <wujianyue000@gmail.com>,
	"Burakov, Anatoly" <anatoly.burakov@intel.com>
Cc: "users@dpdk.org" <users@dpdk.org>,
	"Richardson, Bruce" <bruce.richardson@intel.com>,
	"olivier.matz@6wind.com" <olivier.matz@6wind.com>,
	"dmitry.kozliuk@gmail.com" <dmitry.kozliuk@gmail.com>,
	"stephen@networkplumber.org" <stephen@networkplumber.org>,
	"Mcnamara, John" <john.mcnamara@intel.com>
Subject: Re: [dpdk-users] can we reserve hugepage and not release
Date: Wed, 29 Sep 2021 13:11:02 +0200
Message-ID: <7391021.896Q4A1nnV@thomas> (raw)
In-Reply-To: <PH0PR11MB5093B5D0808FA9C81FFB99D3F7A99@PH0PR11MB5093.namprd11.prod.outlook.com>

29/09/2021 12:16, Burakov, Anatoly:
> From: Thomas Monjalon <thomas@monjalon.net>
> > 18/09/2021 04:37, Jiany Wu:
> > > Hello,
> > >
> > > I met a scenario that, need to start and stop the container many times
> > > for the hugepage. But after several times container start and stop,
> > > the hugepage is not able to reserve.
> > > Hugepage size is 2MB, and HW only support 2MB, can't support 1GB.
> > > Is there anyway to make sure the hugepage is still kept continuous?
> > > Thanks indeed.
> > 
> > Interesting question.
> > I think we need to address it in the DPDK documentation.
> > 
> > Anatoly, Stephen, Bruce, any advice please?
> > 
> 
> Hi,
> 
> From description, I don't quite understand what's the issue here. Is the problem about "contiguousness of memory", or is it about inability to reserve more hugepages?

I think the issue is that sometimes some pages are not properly released,
so we cannot reserve them again.
That's something I experienced myself.
Any trick to reset hugepages state?

> How are hugepages assigned to your container?
> Have you tried using --in-memory mode?




  reply	other threads:[~2021-09-29 11:11 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-18  2:37 Jiany Wu
2021-09-29 10:04 ` Thomas Monjalon
2021-09-29 10:16   ` Burakov, Anatoly
2021-09-29 11:11     ` Thomas Monjalon [this message]
2021-09-29 12:40       ` Burakov, Anatoly
2021-10-05 15:56         ` Jiany Wu

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