Date: Mon, 2 Jan 2012 14:31:38 -0800 From: Garrett Cooper <yanegomi@gmail.com> To: Dieter BSD <dieterbsd@engineer.com> Cc: freebsd-performance@freebsd.org Subject: Re: cmp(1) has a bottleneck, but where? Message-ID: <CAGH67wSy11%2BjNnnoYzGcU%2BZtS7UrnOrWYTO81e12iRR7ADSm9w@mail.gmail.com> In-Reply-To: <20120102221929.218250@gmx.com> References: <20120102221929.218250@gmx.com>
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On Mon, Jan 2, 2012 at 2:19 PM, Dieter BSD <dieterbsd@engineer.com> wrote:
> Task: cp(1) a several-GB file from one drive to another,
> then run cmp(1) to verify. Cp runs as expected, but
> cmp runs slower than expected. Neither the disks
> nor the cpu is maxed out. Local drives, no network
> involved. Machine is otherwise idle.
1. How are you running cmp?
2. Why do you claim cmp is the bottleneck? Is it spinning the CPU?
Thanks,
-Garrett
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