From: Parav Pandit <pandit.parav@gmail.com>
To: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Cc: "Hefty, Sean" <sean.hefty@intel.com>, Tejun Heo <tj@kernel.org>,
Doug Ledford <dledford@redhat.com>,
"cgroups@vger.kernel.org" <cgroups@vger.kernel.org>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"lizefan@huawei.com" <lizefan@huawei.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Jonathan Corbet <corbet@lwn.net>,
"james.l.morris@oracle.com" <james.l.morris@oracle.com>,
"serge@hallyn.com" <serge@hallyn.com>,
Haggai Eran <haggaie@mellanox.com>,
Or Gerlitz <ogerlitz@mellanox.com>,
Matan Barak <matanb@mellanox.com>,
"raindel@mellanox.com" <raindel@mellanox.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"linux-security-module@vger.kernel.org"
<linux-security-module@vger.kernel.org>
Subject: Re: [PATCH 0/7] devcg: device cgroup extension for rdma resource
Date: Wed, 16 Sep 2015 10:11:01 +0530 [thread overview]
Message-ID: <CAG53R5VsFW+h9gU0SgidPwS7nQbyiMdShqNopbFX0=MwaFAYFw@mail.gmail.com> (raw)
In-Reply-To: <20150915034549.GA27847@obsidianresearch.com>
Hi Jason, Sean, Tejun,
I am in process of defining new approach, design based on the feedback
given here for new RDMA cgroup from all of you.
I have also collected feedback from Liran yesterday and ORNL folks too.
Soon I will post the new approach, high level APIs and functionality
for review before submitting actual implementation.
Regards,
Parav Pandit
On Tue, Sep 15, 2015 at 9:15 AM, Jason Gunthorpe
<jgunthorpe@obsidianresearch.com> wrote:
> On Tue, Sep 15, 2015 at 08:38:54AM +0530, Parav Pandit wrote:
>
>> As you precisely described, about wild ratio,
>> we are asking vendor driver (bottom most layer) to statically define
>> what the resource pool is, without telling him which application are
>> we going to run to use those pool.
>> Therefore vendor layer cannot ever define "right" resource pool.
>
> No, I'm saying the resource pool is *well defined* and *fixed* by each
> hardware.
>
> The only question is how do we expose the N resource limits, the list
> of which is totally vendor specific.
>
>> rdma cgroup will allow us to run post 512 or 1024 containers without
>> using PCIe SR-IOV, without creating any vendor specific resource
>> pools.
>
> If you ignore any vendor specific resource limits then you've just
> left open a hole, a wayward container can exhaust all others - so what
> was the point of doing all this work?
>
> Jason
WARNING: multiple messages have this Message-ID (diff)
From: Parav Pandit <pandit.parav-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Cc: "Hefty,
Sean" <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org"
<lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>,
Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
Jonathan Corbet <corbet-T1hC0tSOHrs@public.gmane.org>,
"james.l.morris-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org"
<james.l.morris-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
"serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org"
<serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>,
Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
"raindel-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org"
<raindel-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
"akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org"
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
"linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH 0/7] devcg: device cgroup extension for rdma resource
Date: Wed, 16 Sep 2015 10:11:01 +0530 [thread overview]
Message-ID: <CAG53R5VsFW+h9gU0SgidPwS7nQbyiMdShqNopbFX0=MwaFAYFw@mail.gmail.com> (raw)
In-Reply-To: <20150915034549.GA27847-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Hi Jason, Sean, Tejun,
I am in process of defining new approach, design based on the feedback
given here for new RDMA cgroup from all of you.
I have also collected feedback from Liran yesterday and ORNL folks too.
Soon I will post the new approach, high level APIs and functionality
for review before submitting actual implementation.
Regards,
Parav Pandit
On Tue, Sep 15, 2015 at 9:15 AM, Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org> wrote:
> On Tue, Sep 15, 2015 at 08:38:54AM +0530, Parav Pandit wrote:
>
>> As you precisely described, about wild ratio,
>> we are asking vendor driver (bottom most layer) to statically define
>> what the resource pool is, without telling him which application are
>> we going to run to use those pool.
>> Therefore vendor layer cannot ever define "right" resource pool.
>
> No, I'm saying the resource pool is *well defined* and *fixed* by each
> hardware.
>
> The only question is how do we expose the N resource limits, the list
> of which is totally vendor specific.
>
>> rdma cgroup will allow us to run post 512 or 1024 containers without
>> using PCIe SR-IOV, without creating any vendor specific resource
>> pools.
>
> If you ignore any vendor specific resource limits then you've just
> left open a hole, a wayward container can exhaust all others - so what
> was the point of doing all this work?
>
> Jason
next prev parent reply other threads:[~2015-09-16 4:41 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-07 20:38 [PATCH 0/7] devcg: device cgroup extension for rdma resource Parav Pandit
2015-09-07 20:38 ` Parav Pandit
2015-09-07 20:38 ` [PATCH 1/7] devcg: Added user option to rdma resource tracking Parav Pandit
2015-09-07 20:38 ` Parav Pandit
2015-09-07 20:38 ` [PATCH 2/7] devcg: Added rdma resource tracking module Parav Pandit
2015-09-07 20:38 ` Parav Pandit
2015-09-07 20:38 ` [PATCH 3/7] devcg: Added infrastructure for rdma device cgroup Parav Pandit
2015-09-08 5:31 ` Haggai Eran
2015-09-08 5:31 ` Haggai Eran
2015-09-08 7:02 ` Parav Pandit
2015-09-08 7:02 ` Parav Pandit
2015-09-07 20:38 ` [PATCH 4/7] devcg: Added rdma resource tracker object per task Parav Pandit
2015-09-08 5:48 ` Haggai Eran
2015-09-08 5:48 ` Haggai Eran
2015-09-08 7:04 ` Parav Pandit
2015-09-08 8:24 ` Haggai Eran
2015-09-08 8:24 ` Haggai Eran
2015-09-08 8:26 ` Parav Pandit
2015-09-07 20:38 ` [PATCH 5/7] devcg: device cgroup's extension for RDMA resource Parav Pandit
2015-09-07 20:38 ` Parav Pandit
2015-09-08 8:22 ` Haggai Eran
2015-09-08 8:22 ` Haggai Eran
2015-09-08 10:18 ` Parav Pandit
2015-09-08 13:50 ` Haggai Eran
2015-09-08 13:50 ` Haggai Eran
2015-09-08 14:13 ` Parav Pandit
2015-09-08 8:36 ` Haggai Eran
2015-09-08 8:36 ` Haggai Eran
2015-09-08 10:50 ` Parav Pandit
2015-09-08 10:50 ` Parav Pandit
2015-09-08 14:10 ` Haggai Eran
2015-09-08 14:10 ` Haggai Eran
2015-09-07 20:38 ` [PATCH 6/7] devcg: Added support to use RDMA device cgroup Parav Pandit
2015-09-08 8:40 ` Haggai Eran
2015-09-08 8:40 ` Haggai Eran
2015-09-08 10:22 ` Parav Pandit
2015-09-08 13:40 ` Haggai Eran
2015-09-08 13:40 ` Haggai Eran
2015-09-07 20:38 ` [PATCH 7/7] devcg: Added Documentation of " Parav Pandit
2015-09-07 20:38 ` Parav Pandit
2015-09-07 20:55 ` [PATCH 0/7] devcg: device cgroup extension for rdma resource Parav Pandit
2015-09-08 12:45 ` Haggai Eran
2015-09-08 12:45 ` Haggai Eran
2015-09-08 15:23 ` Tejun Heo
2015-09-08 15:23 ` Tejun Heo
2015-09-09 3:57 ` Parav Pandit
2015-09-10 16:49 ` Tejun Heo
2015-09-10 17:46 ` Parav Pandit
2015-09-10 17:46 ` Parav Pandit
2015-09-10 20:22 ` Tejun Heo
2015-09-11 3:39 ` Parav Pandit
2015-09-11 4:04 ` Tejun Heo
2015-09-11 4:04 ` Tejun Heo
2015-09-11 4:24 ` Doug Ledford
2015-09-11 4:24 ` Doug Ledford
2015-09-11 14:52 ` Tejun Heo
2015-09-11 14:52 ` Tejun Heo
2015-09-11 16:26 ` Parav Pandit
2015-09-11 16:34 ` Tejun Heo
2015-09-11 16:34 ` Tejun Heo
2015-09-11 16:39 ` Parav Pandit
2015-09-11 16:39 ` Parav Pandit
2015-09-11 19:25 ` Tejun Heo
2015-09-14 10:18 ` Parav Pandit
2015-09-14 10:18 ` Parav Pandit
2015-09-11 16:47 ` Parav Pandit
2015-09-11 16:47 ` Parav Pandit
2015-09-11 19:05 ` Tejun Heo
2015-09-11 19:05 ` Tejun Heo
2015-09-11 19:22 ` Hefty, Sean
2015-09-11 19:43 ` Jason Gunthorpe
2015-09-11 19:43 ` Jason Gunthorpe
2015-09-11 20:06 ` Hefty, Sean
2015-09-14 11:09 ` Parav Pandit
2015-09-14 14:04 ` Parav Pandit
2015-09-14 15:21 ` Tejun Heo
2015-09-14 15:21 ` Tejun Heo
2015-09-14 17:28 ` Jason Gunthorpe
2015-09-14 17:28 ` Jason Gunthorpe
2015-09-14 18:54 ` Parav Pandit
2015-09-14 18:54 ` Parav Pandit
2015-09-14 20:18 ` Jason Gunthorpe
2015-09-15 3:08 ` Parav Pandit
2015-09-15 3:45 ` Jason Gunthorpe
2015-09-15 3:45 ` Jason Gunthorpe
2015-09-16 4:41 ` Parav Pandit [this message]
2015-09-16 4:41 ` Parav Pandit
2015-09-20 10:35 ` Haggai Eran
2015-09-20 10:35 ` Haggai Eran
2015-10-28 8:14 ` Parav Pandit
2015-10-28 8:14 ` Parav Pandit
2015-09-14 10:15 ` Parav Pandit
2015-09-11 4:43 ` Parav Pandit
2015-09-11 15:03 ` Tejun Heo
2015-09-10 17:48 ` Hefty, Sean
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