On Thu, Apr 25, 2013 at 2:17 PM, Tom Tucker <tom@xxxxxxxxxxxxxxxxxxxxx> wrote: > The Mellanox driver uses red-black trees extensively for resource > management, e.g. QP ID, CQ ID, etc... When completions come in from the HW, > these are used to find the associated software data structures I believe. It > is certainly possible that these trees get hot on lookup when we're pushing > a lot of data. I'm surprised, however, to see rb_insert_color there because > I'm not aware of any where that resources are being inserted into and/or > removed from a red-black tree in the data path. > I think they (rb calls) are from base kernel, not from any NFS and/or IB module (e.g. RPC, MLX, etc). See the right column ? .... it says "/root/vmlinux". Just a guess - I don't know much about this "perf" command. -- Wendy -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
