Sluggish scheduling during a long disk copy
kitchetech at gmail.com
Sun Nov 9 12:35:32 PST 2008
On Sun, Nov 9, 2008 at 3:32 PM, Dan <dan-freebsd-questions at ourbrains.org>wrote:
> Odhiambo Washington(odhiambo at gmail.com)@2008.11.09 23:25:19 +0300:
> > On Sun, Nov 9, 2008 at 11:21 PM, Dan <
> dan-freebsd-questions at ourbrains.org>wrote:
> > > Hello. I am copying one 150G disk to a 3ware mirror, and the machine
> > > becomes downright unusable. It takes seconds to switch between
> > > windows and it takes seconds between I type a command (ssh session to
> > > a remote box, which I know is fast and unloaded) and see it executed.
> > >
> > > This is 7.1-BETA2. Is this a bug or a generally-accepted performance
> > > behavior?
> > Bug? :-)
> > How are you copying?
> I am copying an 'ntfs-3g'-mounted disk to the 3ware mirror with cp -a.
> It's around 150G of data, and it's going at about 10MB/s to the mirror.
> The mirror uses geom journaling. The speed is fine, the disks are slow.
> But should the copy really freeze-up the system like that?
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could be an issue with ntfs-3g driver
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