Re: [zfs-discuss] ZFS write / read speed and traps for beginners

2008-06-17 Thread Cesare
There is another benchmark tool named iozone (http://www.iozone.org/). Hope this help. Cesare On Sun, Jun 15, 2008 at 6:43 AM, Will Murnane [EMAIL PROTECTED] wrote: On Sun, Jun 15, 2008 at 04:30, Nathan Kroenert [EMAIL PROTECTED] wrote: So - using plain dd to the zfs filesystem on said disk

Re: [zfs-discuss] ZFS write / read speed and traps for beginners

2008-06-15 Thread Nathan Kroenert
Further followup to this thread... After being beaten sufficiently with a clue-bat, it was determined that the nforce 750a could do ahci mode for it's SATA stuff. I set it to ahci, and redid the devlinks etc and cranked it up as AHCI. I'm now regularly peaking at 100MB/s, though spending most

Re: [zfs-discuss] ZFS write / read speed and traps for beginners

2008-06-15 Thread Menno Lageman
Nathan Kroenert wrote: On the NGE front, it turns out that solaris does not seem to like the ethernet address of the card. Trying to set it's OWN ethernet address using ifconfig yielded this: # ifconfig nge0 ether 63:d0:b:7d:1d:0 ifconfig: dlpi_set_physaddr failed nge0: DLSAP address in

[zfs-discuss] ZFS write / read speed and traps for beginners

2008-06-14 Thread Nathan Kroenert
Hey all - Just spent quite some time trying to work out why my 2 disk mirrored ZFS pool was running so slow, and found an interesting answer... System: new Gigabyte M750sli-DS4, AMD 9550, 4GB memory and 2 X Seagate 500GB SATA-II 32mb cache disks. The SATA ports on the nfoce 750asli chipset

Re: [zfs-discuss] ZFS write / read speed and traps for beginners

2008-06-14 Thread Will Murnane
On Sun, Jun 15, 2008 at 04:30, Nathan Kroenert [EMAIL PROTECTED] wrote: So - using plain dd to the zfs filesystem on said disk dd if=/dev/zero of=delete.me bs=65536 NB: dd from /dev/zero is a poor benchmark. Since the writes to disk are all zero, you may create a sparse file, or ZFS

Re: [zfs-discuss] ZFS write / read speed and traps for beginners

2008-06-14 Thread MC
It turns out that when you are in IDE compatability mode, having two disks on the same 'controller' (c# in solaris) behaves just like real IDE... Crap! That is the second time I've seen solaris guess wrong and force what it thinks is right. Solaris will also limit the size of an ATA drive if