Il 17/03/2013 01:04, Aurelien Jarno ha scritto: > | boot | install build-dep | build lm-sensors | > ------------------------+------+-------------------+------------------+ > versatile | 1:09 | 2:27 | 4:09 | > versatile cache=wb | 1:08 | 2:25 | 3:44 |
Strange, cache=wb should be the default. The real problem with SD is that it doesn't have a flush command, hence it cannot be made safe against power losses. But the solution is to add support for virtio-mmio in those boards. Paolo > vexpress | 1:11 | 3:07 | 3:49 | > vexpress cache=wb | 1:07 | 3:07 | 3:47 | > > Note: the install build-dep time doesn't include the download time. > > So even if the two systems are not directly comparable, it shows that > the SD card emulation is indeed slower than the hard disk one. That said > while cache=writeback makes a difference for the versatile platform, it > doesn't really change anything for the vexpress platform. Therefore > forcing the users to add this option doesn't seems to be a good idea.
