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From: Tejun Heo <tj@kernel.org>
To: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: jiangshanlai@gmail.com, torvalds@linux-foundation.org,
	peterz@infradead.org, linux-kernel@vger.kernel.org,
	kernel-team@meta.com, joshdon@google.com, brho@google.com,
	briannorris@chromium.org, nhuck@google.com, agk@redhat.com,
	snitzer@kernel.org, void@manifault.com
Subject: Re: [PATCHSET v1 wq/for-6.5] workqueue: Improve unbound workqueue execution locality
Date: Mon, 7 Aug 2023 21:59:01 -1000	[thread overview]
Message-ID: <ZNH1xQBWIBNvHGZB@slm.duckdns.org> (raw)
In-Reply-To: <94da0dc0-a30d-33d5-b3d5-784bbd59c549@amd.com>

Hello,

On Tue, Aug 08, 2023 at 08:28:53AM +0530, K Prateek Nayak wrote:
> > Assuming that the tbench difference was a testing artifact, I'm applying the
> > patchset to wq/for-6.6 so that it can receive wider testing. Prateek, I'd
> > really appreciate if you could repeat the test and see whether the
> > difference persists.
> 
> Sure. I'll retest with for-6.6 branch. Will post the results here once the
> tests are done. I'll repeat the same - test with the defaults and the ones
> that show any difference in results, I'll rerun them with various affinity
> scopes.

I think it'd be helpful to pick one benchmark setup which shows clear
difference and repeat it multiple times while taking measures to avoid
systemic biases (e.g. instead of running all of control followed by all of
test, separate them into several segments and interleave them).

Thanks.

-- 
tejun

  reply	other threads:[~2023-08-08 20:33 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-19  0:16 Tejun Heo
2023-05-19  0:16 ` [PATCH 01/24] workqueue: Drop the special locking rule for worker->flags and worker_pool->flags Tejun Heo
2023-05-19  0:16 ` [PATCH 02/24] workqueue: Cleanups around process_scheduled_works() Tejun Heo
2023-05-19  0:16 ` [PATCH 03/24] workqueue: Not all work insertion needs to wake up a worker Tejun Heo
2023-05-23  9:54   ` Lai Jiangshan
2023-05-23 21:37     ` Tejun Heo
2023-08-08  1:15   ` [PATCH v2 " Tejun Heo
2023-05-19  0:16 ` [PATCH 04/24] workqueue: Rename wq->cpu_pwqs to wq->cpu_pwq Tejun Heo
2023-05-19  0:16 ` [PATCH 05/24] workqueue: Relocate worker and work management functions Tejun Heo
2023-05-19  0:16 ` [PATCH 06/24] workqueue: Remove module param disable_numa and sysfs knobs pool_ids and numa Tejun Heo
2023-05-19  0:16 ` [PATCH 07/24] workqueue: Use a kthread_worker to release pool_workqueues Tejun Heo
2023-05-19  0:16 ` [PATCH 08/24] workqueue: Make per-cpu pool_workqueues allocated and released like unbound ones Tejun Heo
2023-05-19  0:16 ` [PATCH 09/24] workqueue: Make unbound workqueues to use per-cpu pool_workqueues Tejun Heo
2023-05-22  6:41   ` Leon Romanovsky
2023-05-22 12:27     ` Dennis Dalessandro
2023-05-19  0:16 ` [PATCH 10/24] workqueue: Rename workqueue_attrs->no_numa to ->ordered Tejun Heo
2023-05-19  0:16 ` [PATCH 11/24] workqueue: Rename NUMA related names to use pod instead Tejun Heo
2023-05-19  0:16 ` [PATCH 12/24] workqueue: Move wq_pod_init() below workqueue_init() Tejun Heo
2023-05-19  0:16 ` [PATCH 13/24] workqueue: Initialize unbound CPU pods later in the boot Tejun Heo
2023-05-19  0:16 ` [PATCH 14/24] workqueue: Generalize unbound CPU pods Tejun Heo
2023-05-30  8:06   ` K Prateek Nayak
2023-06-07  1:50     ` Tejun Heo
2023-05-30 21:18   ` Sandeep Dhavale
2023-05-31 12:14     ` K Prateek Nayak
2023-06-07 22:13       ` Tejun Heo
2023-06-08  3:01         ` K Prateek Nayak
2023-06-08 22:50           ` Tejun Heo
2023-06-09  3:43             ` K Prateek Nayak
2023-06-14 18:49               ` Sandeep Dhavale
2023-06-21 20:14                 ` Tejun Heo
2023-06-19  4:30             ` Swapnil Sapkal
2023-06-21 20:38               ` Tejun Heo
2023-07-05  7:04             ` K Prateek Nayak
2023-07-05 18:39               ` Tejun Heo
2023-07-11  3:02                 ` K Prateek Nayak
2023-07-31 23:52                   ` Tejun Heo
2023-08-08  1:08                     ` Tejun Heo
2023-05-19  0:17 ` [PATCH 15/24] workqueue: Add tools/workqueue/wq_dump.py which prints out workqueue configuration Tejun Heo
2023-05-19  0:17 ` [PATCH 16/24] workqueue: Modularize wq_pod_type initialization Tejun Heo
2023-05-19  0:17 ` [PATCH 17/24] workqueue: Add multiple affinity scopes and interface to select them Tejun Heo
2023-05-19  0:17 ` [PATCH 18/24] workqueue: Factor out work to worker assignment and collision handling Tejun Heo
2023-05-19  0:17 ` [PATCH 19/24] workqueue: Factor out need_more_worker() check and worker wake-up Tejun Heo
2023-05-19  0:17 ` [PATCH 20/24] workqueue: Add workqueue_attrs->__pod_cpumask Tejun Heo
2023-05-19  0:17 ` [PATCH 21/24] workqueue: Implement non-strict affinity scope for unbound workqueues Tejun Heo
2023-05-19  0:17 ` [PATCH 22/24] workqueue: Add "Affinity Scopes and Performance" section to documentation Tejun Heo
2023-05-19  0:17 ` [PATCH 23/24] workqueue: Add pool_workqueue->cpu Tejun Heo
2023-05-19  0:17 ` [PATCH 24/24] workqueue: Implement localize-to-issuing-CPU for unbound workqueues Tejun Heo
2023-05-19  0:41 ` [PATCHSET v1 wq/for-6.5] workqueue: Improve unbound workqueue execution locality Linus Torvalds
2023-05-19 22:35   ` Tejun Heo
2023-05-19 23:03     ` Tejun Heo
2023-05-23  1:51       ` Linus Torvalds
2023-05-23 17:59         ` Linus Torvalds
2023-05-23 20:08           ` Rik van Riel
2023-05-23 21:36           ` Sandeep Dhavale
2023-05-23 11:18 ` Peter Zijlstra
2023-05-23 16:12   ` Vincent Guittot
2023-05-24  7:34     ` Peter Zijlstra
2023-05-24 13:15       ` Vincent Guittot
2023-06-05  4:46     ` Gautham R. Shenoy
2023-06-07 14:42       ` Libo Chen
2023-05-26  1:12   ` Tejun Heo
2023-05-30 11:32     ` Peter Zijlstra
2023-06-12 23:56 ` Brian Norris
2023-06-13  2:48   ` Tejun Heo
2023-06-13  9:26     ` Pin-yen Lin
2023-06-21 19:16       ` Tejun Heo
2023-06-21 19:31         ` Linus Torvalds
2023-06-29  9:49           ` Pin-yen Lin
2023-07-03 21:47             ` Tejun Heo
2023-08-08  1:22 ` Tejun Heo
2023-08-08  2:58   ` K Prateek Nayak
2023-08-08  7:59     ` Tejun Heo [this message]
2023-08-18  4:05     ` K Prateek Nayak

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