Messages in this thread | | | Date | Thu, 31 Jan 2008 15:34:17 +0100 | From | "Bart Van Assche" <> | Subject | Re: Integration of SCST in the mainstream Linux kernel |
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On Jan 31, 2008 2:25 PM, Nicholas A. Bellinger <nab@linux-iscsi.org> 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.
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