Hi all, I still didn''t find the problem but it seems to be related with interrupts sharing between onboard network cards (broadcom) and the intel 10gbE card PCI-e. Runing a simple iperf from a linux box to my zfs box, if i use bnx2 or bnx3 i have a performance over 100 mbs, but if i use bnx0, bxn1 or the 10gbE i hard pass 10 mbs and the load on the box goes from 1.0 to infinite...:( I i fix this issue i will let you guys know it. Bruno -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 3656 bytes Desc: S/MIME Cryptographic Signature URL: <http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20100224/5f47f37b/attachment.bin>