From: Parav Pandit <pandit.parav-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>,
Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>,
Liran Liss <liranl-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
"Hefty,
Sean" <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>,
Haggai Eran <haggaie-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
james.l.morris-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org,
Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
Matan Barak <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCHv12 0/3] rdmacg: IB/core: rdma controller support
Date: Thu, 20 Oct 2016 01:24:42 +0530 [thread overview]
Message-ID: <CAG53R5X5dyo7J-UkeMxi_mSxgv=c54fV=anuCZtmf9kaYwDbPw@mail.gmail.com> (raw)
In-Reply-To: <20161019192006.GB3044-piEFEHQLUPpN0TnZuCh8vA@public.gmane.org>
Hi Tejun,
On Thu, Oct 20, 2016 at 12:50 AM, Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote:
> Hello,
>
> On Thu, Oct 20, 2016 at 12:33:53AM +0530, Parav Pandit wrote:
>> > or config changes in one of the ancestors? What "max" means is "no
>> > limit is imposed" which is different from "limit it to 100% of what's
>> > currently available".
>>
>> Charging is hierarchical for rdmacg too.
>> rdma.max configuration exist at all the levels so ancestors change
>> won't affect its children.
>> rdma.max absolute (or future percentage) value is with reference to
>> the total device resources.
>
> Ah, right, the percentage is out of the total device resources
> regardless of the hierarchical restrictions. I still don't think it's
> a good idea for rdmacg to deviate from the common interface
> conventions. If you want to do the percentage calculation in the
> userland and the base numbers are system-wide numbers which are
> hardware dependent, it'd be best if there's an existing place where
> the numbers can be exposed naturally. That'd be more in line with
> others too. The amount of total resources available for the device
> isn't tied to cgroup after all.
>
userland can get the max numbers using other framework which is used
by control & data plane available in C library form or in form of
system tools.
I was preferring to get and set through same interface because,
It simplifies user land software which is often not written in C so
its likely that it needs to rely on system tools and parse the
content, iterate through devices etc.
Getting these info through rdma.max just makes it simple. There will
be logic built to read/write rdma.max in userland anyway, which can be
leveraged for percentage calculation instead of doing it from two
places.
> Thanks.
>
> --
> tejun
next prev parent reply other threads:[~2016-10-19 19:54 UTC|newest]
Thread overview: 112+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-31 8:37 [PATCHv12 0/3] rdmacg: IB/core: rdma controller support Parav Pandit
2016-08-31 8:37 ` [PATCHv12 1/3] rdmacg: Added rdma cgroup controller Parav Pandit
2016-08-31 9:38 ` Leon Romanovsky
2016-09-07 15:07 ` Parav Pandit
2016-09-08 6:12 ` Leon Romanovsky
2016-09-08 10:20 ` Parav Pandit
2016-09-08 10:20 ` Parav Pandit
2016-08-31 15:07 ` Matan Barak
2016-08-31 15:07 ` Matan Barak
2016-08-31 21:16 ` Tejun Heo
[not found] ` <20160831211618.GA12660-piEFEHQLUPpN0TnZuCh8vA@public.gmane.org>
2016-09-01 7:25 ` Matan Barak
2016-09-01 7:25 ` Matan Barak
2016-09-01 8:44 ` Christoph Hellwig
[not found] ` <20160901084406.GA4115-jcswGhMUV9g@public.gmane.org>
2016-09-07 7:55 ` Parav Pandit
2016-09-07 7:55 ` Parav Pandit
2016-09-07 8:51 ` Matan Barak
2016-09-07 8:51 ` Matan Barak
2016-09-07 14:54 ` Parav Pandit
[not found] ` <ae3adcc4-253e-f87c-6ff6-202c91599f48-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2016-09-10 16:14 ` Christoph Hellwig
2016-09-10 16:14 ` Christoph Hellwig
2016-09-10 17:01 ` Jason Gunthorpe
[not found] ` <20160910170151.GA5230-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-09-11 8:07 ` Matan Barak
2016-09-11 8:07 ` Matan Barak
2016-09-11 13:34 ` Christoph Hellwig
2016-09-11 14:35 ` Leon Romanovsky
2016-09-11 17:14 ` Jason Gunthorpe
2016-09-11 17:24 ` Christoph Hellwig
2016-09-11 17:52 ` Jason Gunthorpe
[not found] ` <20160911175235.GB13442-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-09-12 5:07 ` Leon Romanovsky
2016-09-12 5:07 ` Leon Romanovsky
[not found] ` <20160912050717.GE8812-2ukJVAZIZ/Y@public.gmane.org>
2016-09-14 7:06 ` Parav Pandit
2016-09-14 7:06 ` Parav Pandit
2016-09-14 8:14 ` Matan Barak
2016-09-14 8:14 ` Matan Barak
[not found] ` <13a00119-e629-2d34-d08b-c02bb6beceea-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2016-09-14 9:19 ` Parav Pandit
2016-09-14 9:19 ` Parav Pandit
[not found] ` <CAG53R5X4stfy5+Jmg+XReUJqt56Z-zABK+UEswHW1dXhH-9cNw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-09-15 18:56 ` Leon Romanovsky
2016-09-15 18:56 ` Leon Romanovsky
2016-09-21 4:43 ` Parav Pandit
2016-09-21 14:26 ` Tejun Heo
[not found] ` <20160921142645.GB10734-piEFEHQLUPpN0TnZuCh8vA@public.gmane.org>
2016-09-21 16:02 ` Parav Pandit
2016-09-21 16:02 ` Parav Pandit
[not found] ` <CAG53R5WMuojhzFGmqk6nHfypd9Hq4dGsWRKjtUyMZ=RezU-LhQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-04 18:19 ` Parav Pandit
2016-10-04 18:19 ` Parav Pandit
2016-10-04 18:19 ` Parav Pandit
2016-10-05 6:37 ` Christoph Hellwig
2016-10-05 11:22 ` Leon Romanovsky
2016-10-05 15:36 ` Tejun Heo
[not found] ` <20161005063735.GC3086-jcswGhMUV9g@public.gmane.org>
2016-10-06 12:55 ` Parav Pandit
2016-10-06 12:55 ` Parav Pandit
2016-10-18 20:15 ` Parav Pandit
2016-09-19 13:10 ` Dalessandro, Dennis
2016-09-19 13:10 ` Dalessandro, Dennis
2016-09-19 17:00 ` Parav Pandit
2016-09-19 17:00 ` Parav Pandit
[not found] ` <CAG53R5Ws4BJKqeEYfEoEx5kuaXUmhDKcXfH4Vx=LTMK6tKMG0A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-09-10 16:12 ` Christoph Hellwig
2016-09-10 16:12 ` Christoph Hellwig
[not found] ` <20160910161228.GB29259-jcswGhMUV9g@public.gmane.org>
2016-09-11 7:40 ` Matan Barak
2016-09-11 7:40 ` Matan Barak
2016-08-31 8:37 ` [PATCHv12 2/3] IB/core: added support to use " Parav Pandit
[not found] ` <1472632647-1525-1-git-send-email-pandit.parav-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-08-31 8:37 ` [PATCHv12 3/3] rdmacg: Added documentation for rdmacg Parav Pandit
2016-08-31 8:37 ` Parav Pandit
2016-08-31 13:56 ` [PATCHv12 0/3] rdmacg: IB/core: rdma controller support Tejun Heo
2016-08-31 13:56 ` Tejun Heo
2016-10-05 11:22 ` Leon Romanovsky
[not found] ` <20161005112206.GC9282-2ukJVAZIZ/Y@public.gmane.org>
2016-10-06 12:59 ` Parav Pandit
2016-10-06 12:59 ` Parav Pandit
2016-10-06 13:49 ` Parav Pandit
[not found] ` <CAG53R5VNVb=8-LJbDRqjtOZG347ucPuc420bcfnDgBKMoKqU-w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-10 4:46 ` Leon Romanovsky
[not found] ` <20161010044623.GI9282-2ukJVAZIZ/Y@public.gmane.org>
2016-10-10 6:29 ` Parav Pandit
[not found] ` <CAG53R5UM6nSTZ7=0S9reKGX45CpNBi8soSDVZyXkN-z0_XXWWQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-10 7:33 ` Leon Romanovsky
[not found] ` <20161010073343.GK9282-2ukJVAZIZ/Y@public.gmane.org>
2016-10-10 8:35 ` Parav Pandit
[not found] ` <CAG53R5WeWSrJ5-Gtt-cXpUr0r73zh3bqQM_G5zTue27tPtVEXA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-10 8:52 ` Leon Romanovsky
[not found] ` <20161010085241.GL9282-2ukJVAZIZ/Y@public.gmane.org>
2016-10-10 9:22 ` Parav Pandit
2016-10-10 12:25 ` Tejun Heo
[not found] ` <20161010122545.GA27360-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2016-10-10 13:13 ` Parav Pandit
[not found] ` <CAG53R5V5yE4PsDBjP9BieG_=39M0G1kx-AfBEzWK4LUCxNnYBA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-10 13:20 ` Tejun Heo
[not found] ` <20161010132014.GD29742-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2016-10-10 13:32 ` Parav Pandit
[not found] ` <CAG53R5ULKCqtw45E6t4hYdRV+y_OQqVazf=7A7Ax_XAJ2K0_dw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-13 10:34 ` Leon Romanovsky
[not found] ` <20161013103430.GB9282-2ukJVAZIZ/Y@public.gmane.org>
2016-10-13 11:04 ` Parav Pandit
2016-10-13 23:14 ` Tejun Heo
[not found] ` <20161013231413.GA32534-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2016-10-18 20:02 ` Parav Pandit
[not found] ` <CAG53R5UciPpa5d8BWyR-tks3LBrBwRCN2NyBbbm1e3EE-OWSYQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-18 21:51 ` Tejun Heo
[not found] ` <20161018215134.GB2761-piEFEHQLUPpN0TnZuCh8vA@public.gmane.org>
2016-10-19 9:34 ` Parav Pandit
[not found] ` <CAG53R5UEvkPBM0yFrR=fvEzyCrku2q=rLZyDVrSs9q+3hgbSmQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-19 14:33 ` Tejun Heo
[not found] ` <20161019143345.GA18532-piEFEHQLUPpN0TnZuCh8vA@public.gmane.org>
2016-10-19 19:03 ` Parav Pandit
[not found] ` <CAG53R5WUyA7JBn=PeivUc5F5k210xf_HccPXFt3r7ZGYHOPaGA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-19 19:20 ` Tejun Heo
[not found] ` <20161019192006.GB3044-piEFEHQLUPpN0TnZuCh8vA@public.gmane.org>
2016-10-19 19:54 ` Parav Pandit [this message]
[not found] ` <CAG53R5X5dyo7J-UkeMxi_mSxgv=c54fV=anuCZtmf9kaYwDbPw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-19 20:05 ` Tejun Heo
[not found] ` <20161019200536.GC3044-piEFEHQLUPpN0TnZuCh8vA@public.gmane.org>
2016-10-19 20:18 ` Parav Pandit
[not found] ` <CAG53R5XkRKdo-SCaREZvov3AGp5MSd18RpQ+0HEu-htUzqwOOw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-31 6:54 ` Leon Romanovsky
[not found] ` <20161031065441.GY3617-2ukJVAZIZ/Y@public.gmane.org>
2016-11-01 11:03 ` Parav Pandit
[not found] ` <CAG53R5VKwntDHX101+5aaGoyKMKQuiKQWam575iFAxhmKxhE1g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-11-01 14:07 ` Leon Romanovsky
[not found] ` <20161101140732.GC3617-2ukJVAZIZ/Y@public.gmane.org>
2016-11-02 4:34 ` Parav Pandit
2016-11-03 18:00 ` Leon Romanovsky
[not found] ` <20161103180006.GL3617-2ukJVAZIZ/Y@public.gmane.org>
2016-11-04 4:20 ` Leon Romanovsky
2016-11-04 4:20 ` Liran Liss
[not found] ` <AM4PR0501MB2802030EE9E359133E04439CB1A20-dp/nxUn679jTOi/YP668sMDSnupUy6xnnBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2016-11-04 4:47 ` Parav Pandit
[not found] ` <CAG53R5Vd58wEBKgAajp9VvJmB5sO2Umii0JE4XaLYKbfrJrxyg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-11-04 4:52 ` Liran Liss
[not found] ` <AM4PR0501MB2802E87F709F41DDEC20B7C9B1A20-dp/nxUn679jTOi/YP668sMDSnupUy6xnnBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2016-11-04 4:57 ` Parav Pandit
[not found] ` <CAG53R5UyZPh9wduPZGRg2P09n2Og8oODqb+QW=7ryAPqJDa6Vw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-11-04 5:06 ` Liran Liss
[not found] ` <AM4PR0501MB28025BE002CBA9D04675A5A5B1A20-dp/nxUn679jTOi/YP668sMDSnupUy6xnnBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2016-11-04 5:44 ` Parav Pandit
[not found] ` <CAG53R5WdauHpML66g-O6zj+j_DUYWJMPjmL1xDaSxwDmPPYm2A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-11-08 8:12 ` Liran Liss
[not found] ` <HE1PR0501MB2812298C05431B08B0F408EEB1A60-692Kmc8YnlIVrnpjwTCbp8DSnupUy6xnnBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2016-11-10 7:41 ` Parav Pandit
[not found] ` <CAG53R5XqZwrYsdX=JQ1D4cDB0h65RDQVb=VCiaR5TXuf_uoO0Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-11-10 16:38 ` Leon Romanovsky
[not found] ` <20161110163837.GE28957-2ukJVAZIZ/Y@public.gmane.org>
2016-11-10 16:46 ` Tejun Heo
[not found] ` <20161110164638.GC26105-piEFEHQLUPpN0TnZuCh8vA@public.gmane.org>
2016-11-10 17:04 ` Parav Pandit
[not found] ` <CAG53R5UGfhGHc3-jgUjH5taFzTHg3BOgXi25QjuQfUFc0U7tgw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-11-10 17:32 ` Tejun Heo
[not found] ` <20161110173217.GD26105-piEFEHQLUPpN0TnZuCh8vA@public.gmane.org>
2016-11-10 17:56 ` Parav Pandit
2016-11-10 19:23 ` Tejun Heo
[not found] ` <20161110192344.GA4805-piEFEHQLUPpN0TnZuCh8vA@public.gmane.org>
2016-11-11 13:00 ` Parav Pandit
2016-11-04 4:28 ` Parav Pandit
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