Re: (S)ATA performance in FBSD 6.2/7.0

2007-03-04 Thread Bruce Evans
On Mon, 5 Mar 2007, dima wrote: I think you're quite OK with dd. I do believe you'll get a comparable results for cp setting "noatime" option in mount(8)s. As you were told, the default mount mode is noasync which is "synchronous metadata + asynchronous data". But FreeBSD still updates metadat

Re: (S)ATA performance in FBSD 6.2/7.0

2007-03-04 Thread dima
> The last days I tried to figure out why some of my lab's FreeBSD boxes > and also mine at home seem to be outperformed by some Linux setups > around here and I saw something interesting. > > On my lab's FreeBSD 6.2/i386 box (ASUS P4P800, ICH5 with two SATA 150 > ports, two SATA 300 drives att

Re: (S)ATA performance in FBSD 6.2/7.0

2007-03-04 Thread O. Hartmann
Mike Tancsa wrote: > At 04:38 AM 3/2/2007, O. Hartmann wrote: >> The last days I tried to figure out why some of my lab's FreeBSD >> boxes and also mine at home seem to be outperformed by some Linux >> setups around here and I saw something interesting. >> >> On my lab's FreeBSD 6.2/i386 box (ASUS

Re: (S)ATA performance in FBSD 6.2/7.0

2007-03-04 Thread Bruce Evans
On Sat, 3 Mar 2007, Alexander Leidinger wrote: In FreeBSD we have 3 types, not 2. We have "sync", "noasync" (default) and "async". Are you sure? 2 independent flags give 4 states. I think the flags are not completely independent, but sync doesn't cancel async in all cases (partly because of

Re: (S)ATA performance in FBSD 6.2/7.0

2007-03-04 Thread Robert Watson
On Fri, 2 Mar 2007, O. Hartmann wrote: On my lab's FreeBSD 6.2/i386 box (ASUS P4P800, ICH5 with two SATA 150 ports, two SATA 300 drives attached) I copied big files (~ 5GB) from one drive to another while the box didn't do anything else than copying. I watched the copy process via 'systat -vms