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
next prev 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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