From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: Paul Turner <pjt@google.com>
Cc: linux-kernel@vger.kernel.org,
Bharata B Rao <bharata@linux.vnet.ibm.com>,
Dhaval Giani <dhaval@linux.vnet.ibm.com>,
Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>,
Gautham R Shenoy <ego@in.ibm.com>,
Srivatsa Vaddagiri <vatsa@in.ibm.com>,
Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Pavel Emelyanov <xemul@openvz.org>,
Herbert Poetzl <herbert@13thfloor.at>,
Avi Kivity <avi@redhat.com>, Chris Friesen <cfriesen@nortel.com>,
Nikhil Rao <ncrao@google.com>
Subject: Re: [CFS Bandwidth Control v4 2/7] sched: accumulate per-cfs_rq cpu usage
Date: Wed, 16 Feb 2011 23:15:26 +0530 [thread overview]
Message-ID: <20110216174526.GD3415@balbir.in.ibm.com> (raw)
In-Reply-To: <20110216031840.979831163@google.com>
* Paul Turner <pjt@google.com> [2011-02-15 19:18:33]:
> Introduce account_cfs_rq_quota() to account bandwidth usage on the cfs_rq
> level versus task_groups for which bandwidth has been assigned. This is
> tracked by whether the local cfs_rq->quota_assigned is finite or infinite
> (RUNTIME_INF).
>
> For cfs_rq's that belong to a bandwidth constrained task_group we introduce
> tg_request_cfs_quota() which attempts to allocate quota from the global pool
> for use locally. Updates involving the global pool are currently protected
> under cfs_bandwidth->lock, local pools are protected by rq->lock.
>
> This patch only attempts to assign and track quota, no action is taken in the
> case that cfs_rq->quota_used exceeds cfs_rq->quota_assigned.
>
> Signed-off-by: Paul Turner <pjt@google.com>
> Signed-off-by: Nikhil Rao <ncrao@google.com>
> Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
> ---
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
--
Three Cheers,
Balbir
next prev parent reply other threads:[~2011-02-16 17:45 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-16 3:18 [CFS Bandwidth Control v4 0/7] Introduction Paul Turner
2011-02-16 3:18 ` [CFS Bandwidth Control v4 1/7] sched: introduce primitives to account for CFS bandwidth tracking Paul Turner
2011-02-16 16:52 ` Balbir Singh
2011-02-17 2:54 ` Bharata B Rao
2011-02-23 13:32 ` Peter Zijlstra
2011-02-25 3:11 ` Paul Turner
2011-02-25 20:53 ` Paul Turner
2011-02-16 3:18 ` [CFS Bandwidth Control v4 2/7] sched: accumulate per-cfs_rq cpu usage Paul Turner
2011-02-16 17:45 ` Balbir Singh [this message]
2011-02-23 13:32 ` Peter Zijlstra
2011-02-25 3:33 ` Paul Turner
2011-02-25 12:31 ` Peter Zijlstra
2011-02-16 3:18 ` [CFS Bandwidth Control v4 3/7] sched: throttle cfs_rq entities which exceed their local quota Paul Turner
2011-02-18 6:52 ` Balbir Singh
2011-02-23 13:32 ` Peter Zijlstra
2011-02-24 5:21 ` Bharata B Rao
2011-02-24 11:05 ` Peter Zijlstra
2011-02-24 15:45 ` Bharata B Rao
2011-02-24 15:52 ` Peter Zijlstra
2011-02-24 16:39 ` Bharata B Rao
2011-02-24 17:20 ` Peter Zijlstra
2011-02-25 3:59 ` Paul Turner
2011-02-25 3:41 ` Paul Turner
2011-02-25 3:10 ` Paul Turner
2011-02-25 13:58 ` Bharata B Rao
2011-02-25 20:51 ` Paul Turner
2011-02-28 3:50 ` Bharata B Rao
2011-02-28 6:38 ` Paul Turner
2011-02-28 13:48 ` Peter Zijlstra
2011-03-01 8:31 ` Paul Turner
2011-03-02 7:23 ` Bharata B Rao
2011-03-02 8:05 ` Paul Turner
2011-02-16 3:18 ` [CFS Bandwidth Control v4 4/7] sched: unthrottle cfs_rq(s) who ran out of quota at period refresh Paul Turner
2011-02-18 7:19 ` Balbir Singh
2011-02-18 8:10 ` Bharata B Rao
2011-02-23 12:23 ` Peter Zijlstra
2011-02-23 13:32 ` Peter Zijlstra
2011-02-24 7:04 ` Bharata B Rao
2011-02-24 11:14 ` Peter Zijlstra
2011-02-26 0:02 ` Paul Turner
2011-02-16 3:18 ` [CFS Bandwidth Control v4 5/7] sched: add exports tracking cfs bandwidth control statistics Paul Turner
2011-02-22 3:14 ` Balbir Singh
2011-02-22 4:13 ` Bharata B Rao
2011-02-22 4:40 ` Balbir Singh
2011-02-23 8:03 ` Paul Turner
2011-02-23 10:13 ` Balbir Singh
2011-02-23 13:32 ` Peter Zijlstra
2011-02-25 3:26 ` Paul Turner
2011-02-25 8:54 ` Peter Zijlstra
2011-02-16 3:18 ` [CFS Bandwidth Control v4 6/7] sched: hierarchical task accounting for SCHED_OTHER Paul Turner
2011-02-22 3:17 ` Balbir Singh
2011-02-23 8:05 ` Paul Turner
2011-02-23 2:02 ` Hidetoshi Seto
2011-02-23 2:20 ` Paul Turner
2011-02-23 2:43 ` Balbir Singh
2011-02-23 13:32 ` Peter Zijlstra
2011-02-25 3:25 ` Paul Turner
2011-02-25 12:17 ` Peter Zijlstra
2011-02-16 3:18 ` [CFS Bandwidth Control v4 7/7] sched: add documentation for bandwidth control Paul Turner
2011-02-21 2:47 ` [CFS Bandwidth Control v4 0/7] Introduction Xiao Guangrong
2011-02-22 10:28 ` Bharata B Rao
2011-02-23 7:42 ` Paul Turner
2011-02-23 7:51 ` Balbir Singh
2011-02-23 7:56 ` Paul Turner
2011-02-23 8:31 ` Bharata B Rao
[not found] ` <20110224161111.7d83a884@jacob-laptop>
2011-02-25 10:03 ` Paul Turner
2011-02-25 13:06 ` jacob pan
2011-03-08 3:57 ` Balbir Singh
2011-03-08 18:18 ` Jacob Pan
2011-03-09 10:12 ` Paul Turner
2011-03-09 21:57 ` jacob pan
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