On Feb. 06, 2008, 14:16 +0200, "Bart Van Assche" <bart.vanassche@xxxxxxxxx> wrote: > On Feb 5, 2008 6:01 PM, Erez Zilber <erezz@xxxxxxxxxxxx> wrote: >> Using such large values for FirstBurstLength will give you poor >> performance numbers for WRITE commands (with iSER). FirstBurstLength >> means how much data should you send as unsolicited data (i.e. without >> RDMA). It means that your WRITE commands were sent without RDMA. > > Sorry, but I'm afraid you got this wrong. When the iSER transport is > used instead of TCP, all data is sent via RDMA, including unsolicited > data. If you have look at the iSER implementation in the Linux kernel > (source files under drivers/infiniband/ulp/iser), you will see that > all data is transferred via RDMA and not via TCP/IP. Regardless of what the current implementation is, the behavior you (Bart) describe seems to disagree with http://www.ietf.org/rfc/rfc5046.txt. Benny > > Bart Van Assche. > - - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
