From: Dave Hansen <dave.hansen@intel.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: linux-mm@kvack.org, tglx@linutronix.de
Subject: Re: Memory compaction and mlockall()
Date: Wed, 10 Jul 2019 10:02:00 -0700 [thread overview]
Message-ID: <b7689560-2254-6cba-16fe-d52829cf42df@intel.com> (raw)
In-Reply-To: <20190710164521.vlcrrfovphd5fp7f@linutronix.de>
On 7/10/19 9:45 AM, Sebastian Andrzej Siewior wrote:
> It says "lock virtual address space into into RAM". I assumed that there
> will be no page faults because everything is locked.
>
> The problem (besides the delay caused by the context switch and fix up)
> is that a major fault (with might have happened at the same time in
> another thread) will block this minor fault even longer.
Yeah, I totally agree this behavior can be problematic and
counterintuitive. Making it better would be nice.
I just wanted to point out that it's probably not strictly required, though.
next prev parent reply other threads:[~2019-07-10 17:02 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-10 14:41 Memory compaction and mlockall() Sebastian Andrzej Siewior
2019-07-10 16:20 ` Dave Hansen
2019-07-10 16:45 ` Sebastian Andrzej Siewior
2019-07-10 17:02 ` Dave Hansen [this message]
2019-07-10 18:21 ` Yang Shi
2019-07-11 9:43 ` Sebastian Andrzej Siewior
2019-07-11 16:23 ` Yang Shi
2019-08-12 14:59 ` Vlastimil Babka
2019-08-12 15:54 ` Sebastian Andrzej Siewior
2019-08-13 8:23 ` Vlastimil Babka
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