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From: Bart Van Assche <bart.vanassche@sandisk.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>
Cc: Mike Snitzer <snitzer@redhat.com>, Joe Thornber <ejt@redhat.com>,
	<linux-kernel@vger.kernel.org>, <dm-devel@redhat.com>,
	Mikulas Patocka <mpatocka@redhat.com>,
	Ingo Molnar <mingo@kernel.org>, Alasdair Kergon <agk@redhat.com>
Subject: Re: [dm-devel] [RFC][PATCH] dm: Remove dm_bufio_cond_resched()
Date: Fri, 23 Sep 2016 07:32:47 -0700	[thread overview]
Message-ID: <89c9d841-36c4-8b7e-544f-607cbdb2eec0@sandisk.com> (raw)
In-Reply-To: <20160923073435.GL2794@worktop>

On 09/23/16 00:34, Peter Zijlstra wrote:
> Is anybody still using PREEMPT_NONE? Most workloads also care about
> latency to some extend. Lots of code has explicit cond_resched() and
> doesn't worry.

 From a SLES11 system:

$ grep PREEMPT_NONE /boot/config-3.0.101-0.47.67-default
CONFIG_PREEMPT_NONE=y

 From a SLES12 system:

$ grep CONFIG_PREEMPT_NONE /boot/config-4.4.16-56-default
CONFIG_PREEMPT_NONE=y

Bart.

WARNING: multiple messages have this Message-ID (diff)
From: Bart Van Assche <bart.vanassche@sandisk.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>
Cc: Mike Snitzer <snitzer@redhat.com>, Joe Thornber <ejt@redhat.com>,
	linux-kernel@vger.kernel.org, dm-devel@redhat.com,
	Mikulas Patocka <mpatocka@redhat.com>,
	Ingo Molnar <mingo@kernel.org>, Alasdair Kergon <agk@redhat.com>
Subject: Re: [dm-devel] [RFC][PATCH] dm: Remove dm_bufio_cond_resched()
Date: Fri, 23 Sep 2016 07:32:47 -0700	[thread overview]
Message-ID: <89c9d841-36c4-8b7e-544f-607cbdb2eec0@sandisk.com> (raw)
In-Reply-To: <20160923073435.GL2794@worktop>

On 09/23/16 00:34, Peter Zijlstra wrote:
> Is anybody still using PREEMPT_NONE? Most workloads also care about
> latency to some extend. Lots of code has explicit cond_resched() and
> doesn't worry.

 From a SLES11 system:

$ grep PREEMPT_NONE /boot/config-3.0.101-0.47.67-default
CONFIG_PREEMPT_NONE=y

 From a SLES12 system:

$ grep CONFIG_PREEMPT_NONE /boot/config-4.4.16-56-default
CONFIG_PREEMPT_NONE=y

Bart.

  parent reply	other threads:[~2016-09-23 14:33 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-13  8:45 [RFC][PATCH] dm: Remove dm_bufio_cond_resched() Peter Zijlstra
2016-09-13 12:49 ` Thomas Gleixner
2016-09-13 13:39 ` Mike Snitzer
2016-09-19 10:53   ` Peter Zijlstra
2016-09-22 20:53     ` Mikulas Patocka
2016-09-22 20:59       ` Thomas Gleixner
2016-09-23  7:34         ` Peter Zijlstra
2016-09-23  8:00           ` Thomas Gleixner
2016-09-23  9:05             ` Peter Zijlstra
2016-09-23  9:13               ` Thomas Gleixner
2016-09-23  9:26                 ` Ingo Molnar
2016-09-23 12:17             ` Mike Galbraith
2016-09-23 12:26               ` Peter Zijlstra
2016-09-23 12:39                 ` Mike Galbraith
2016-09-23 12:42                 ` Mike Snitzer
2016-09-23 12:46                   ` Peter Zijlstra
2016-09-23 14:32           ` Bart Van Assche [this message]
2016-09-23 14:32             ` [dm-devel] " Bart Van Assche
2016-09-19  9:49 ` Mikulas Patocka
2016-09-19 10:47   ` Peter Zijlstra

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