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From: hanjinke <hanjinke.666-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org>
To: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
Cc: "Michal Koutný" <mkoutny-IBi9RG/b67k@public.gmane.org>,
	josef-DigfWCa+lFGyeJad7bwFQA@public.gmane.org,
	axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org,
	cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	yinxin.x-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org
Subject: Re: [External] Re: [PATCH v3] blk-throtl: Introduce sync and async queues for blk-throtl
Date: Sat, 7 Jan 2023 02:07:38 +0800	[thread overview]
Message-ID: <c839ba6c-80ac-6d92-af64-5c0e1956ae93@bytedance.com> (raw)
In-Reply-To: <Y7hTHZQYsCX6EHIN-NiLfg/pYEd1N0TnZuCh8vA@public.gmane.org>



在 2023/1/7 上午12:58, Tejun Heo 写道:

> 
> Jinke, is the case you described in the original email what you actually saw
> in production or a simplified test case for demonstration? If the latter,
> can you describe actual problems seen in production?
> 
> Thanks.
> 

Hi

In our internal scenario, iocost has been deployed as the main io 
isolation method and is gradually spreading。

But for some specific scenarios with old kernel versions, blk-throtl
is alose needed. The scenario described in my email is in the early 
stage of research and extensive testing for it. During this period，some 
priority inversion issues amoug cgroups or within one cgroup have been 
observed. So I send this patch to try to fix or mitigate some of these 
issues.

Thanks

Jinke

  parent reply	other threads:[~2023-01-06 18:07 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-26 13:05 [PATCH v3] blk-throtl: Introduce sync and async queues for blk-throtl Jinke Han
2022-12-26 15:24 ` kernel test robot
     [not found] ` <20221226130505.7186-1-hanjinke.666-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org>
2023-01-04 22:11   ` Tejun Heo
     [not found]     ` <Y7X5rsnYCAAYRGQd-NiLfg/pYEd1N0TnZuCh8vA@public.gmane.org>
2023-01-05  7:28       ` [External] " hanjinke
2023-01-05 16:18   ` Michal Koutný
     [not found]     ` <20230105161854.GA1259-9OudH3eul5jcvrawFnH+a6VXKuFTiq87@public.gmane.org>
2023-01-05 17:35       ` Tejun Heo
     [not found]         ` <Y7cKf7IH+FJ/6IyV-NiLfg/pYEd1N0TnZuCh8vA@public.gmane.org>
2023-01-05 19:22           ` Michal Koutný
     [not found]             ` <20230105192247.GB16920-9OudH3eul5jcvrawFnH+a6VXKuFTiq87@public.gmane.org>
2023-01-05 21:39               ` Tejun Heo
2023-01-06 15:38       ` Jan Kara
2023-01-06 16:58         ` Tejun Heo
     [not found]           ` <Y7hTHZQYsCX6EHIN-NiLfg/pYEd1N0TnZuCh8vA@public.gmane.org>
2023-01-06 18:07             ` hanjinke [this message]
     [not found]               ` <c839ba6c-80ac-6d92-af64-5c0e1956ae93-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org>
2023-01-06 18:15                 ` [External] " Tejun Heo
2023-01-07  4:44                   ` hanjinke
     [not found]                     ` <e499f088-8ed9-2e19-b2e5-efaa4f9738f0-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org>
2023-01-09 18:08                       ` Tejun Heo
2023-01-10 13:07                         ` hanjinke
2023-01-11 12:35               ` Michal Koutný
     [not found]                 ` <20230111123532.GB3673-9OudH3eul5jcvrawFnH+a6VXKuFTiq87@public.gmane.org>
2023-01-12  3:26                   ` hanjinke
2023-01-09 10:59           ` Jan Kara
2023-01-09 17:10             ` Tejun Heo

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