On Jan 31, 2008 2:25 PM, Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx> wrote: > Since this particular code is located in a non-data path critical > section, the kernel vs. user discussion is a wash. If we are talking > about data path, yes, the relevance of DD tests in kernel designs are > suspect :p. For those IB testers who are interested, perhaps having a > look with disktest from the Linux Test Project would give a better > comparision between the two implementations on a RDMA capable fabric > like IB for best case performance. I think everyone is interested in > seeing just how much data path overhead exists between userspace and > kernel space in typical and heavy workloads, if if this overhead can be > minimized to make userspace a better option for some of this very > complex code. I can run disktest on the same setups I ran dd on. This will take some time however. Disktest is new to me -- any hints with regard to suitable combinations of command line parameters are welcome. The most recent version I could find on http://ltp.sourceforge.net/ is ltp-20071231. 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
