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From: Florian Weimer <fweimer@redhat.com>
To: Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org>,
	Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: libc-alpha@sourceware.org
Subject: Re: [libc/string] State of PAGE_COPY_FWD / PAGE_COPY_THRESHOLD
Date: Thu, 10 Nov 2016 08:26:00 -0000	[thread overview]
Message-ID: <99998c8e-f9e5-cffd-1d4c-502954b751f2@redhat.com> (raw)
In-Reply-To: <193512EC-DC6C-4BDF-8138-1C1F54B30A12@linaro.org>

On 11/10/2016 08:39 AM, Maxim Kuvyrkov wrote:

> A quick investigation shows that there is no such syscall provided by the Linux kernel.  Doesn't mean we can't ask for / implement one.

Linux did exactly this when you read a large block from /dev/zero.  It 
was removed because it did not provide any real benefit to applications. 
  It just looked very good in certain benchmarks.

Florian

  parent reply	other threads:[~2016-11-10  8:26 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-01  9:28 Maxim Kuvyrkov
2016-11-01 13:59 ` Adhemerval Zanella
2016-11-10  7:39   ` Maxim Kuvyrkov
2016-11-10  7:48     ` Andrew Pinski
2016-11-10  7:52       ` Maxim Kuvyrkov
2016-11-10  8:01         ` Andrew Pinski
2016-11-10  8:05           ` Andrew Pinski
2016-11-10  8:25             ` Florian Weimer
2016-11-10  8:34               ` Andrew Pinski
2016-11-10  8:55                 ` Andrew Pinski
2016-11-10  9:25                   ` Siddhesh Poyarekar
2016-11-10  9:29                     ` Florian Weimer
2016-11-10  9:34                       ` Siddhesh Poyarekar
2016-11-30 11:18                   ` Siddhesh Poyarekar
2016-11-10  8:26     ` Florian Weimer [this message]
2016-11-10  8:27 ` Florian Weimer

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