Gentoo Archives: gentoo-user

From: Trenton Adams <trenton.d.adams@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] usb1 performance out of usb2 external HD
Date: Tue, 17 Jan 2006 00:52:22
Message-Id: 9b1675090601161647s441760a2k2695caae4dbb071@mail.gmail.com
In Reply to: Re: [gentoo-user] usb1 performance out of usb2 external HD by Iain Buchanan
1 On 1/16/06, Iain Buchanan <iaindb@××××××××××××.au> wrote:
2 > On Mon, 2006-01-16 at 10:46 -0700, Trenton Adams wrote:
3 > > Are you mounting with the "sync" option, or no? Try it with, and
4 > > without. If you do it without, time what it takes to do the copy, and
5 > > unmount. unmount will do the actual sync.
6 >
7 > hey, that sped it up heaps!
8 >
9 > $ sudo mount -t vfat -o uid=iain,gid=users,async /dev/sdd6 /mnt/tmp/
10 > $ time { cp /usr/portage/distfiles/OOo_2.0.1_LinuxIntel_install.tar.gz /mnt/tmp/; sudo umount /mnt/tmp/; }
11 >
12 > real 0m11.134s
13 >
14 > thats a huge increase (11s instead of 81s!), so how come hdparm still
15 > reports 9MB/s?
16
17 I'm wondering if we should be reporting this to the kernel guys. I
18 see this on *all* linux systems with kernel 2.6, but I'm not sure
19 about 2.4. But, I think I'll try enabling some options that Richard
20 mentioned first.
21
22 --
23 gentoo-user@g.o mailing list

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Re: [gentoo-user] usb1 performance out of usb2 external HD "b.n." <brullonulla@×××××.com>