Yup, makes a vast difference. XFS + not using synchronize is almost as
fast as using ubd as loopback on host.
Says in help one shouldn't do this if one cares about the data in the UBD
though. Exactly how dangerous is it?
// Joel
On Thu, 8 Dec 2005, Rob Landley wrote:
On Thursday 08 December 2005 08:06, Joel Palmius wrote:
Are there any general recommendations for making throughput on UBDs more
efficient? Such as kernel settings, recommended filesystems..?
Doing an "emerge sync" inside an uml raises iowait to 100% and load to 7,
making the machine more or less inaccessible. Just wondering if it's me
having bad settings.
Switch off CONFIG_BLK_DEV_UBD_SYNC (in the Block Devices menu).
Rob
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