Messages in this thread | | | Date | Tue, 2 Sep 2008 00:12:03 -0400 (EDT) | From | "CHADHA,VINEET" <> | Subject | TLB evaluation for Linux |
| |
Hi,
I have been working to evaluate TLB performance for Linux O/S and virtualized workloads(such as Xen) in a Full system simulator(e.g. simics). While my evaluation is in nascent stage, I do notice that most of the IPIs in multi-core environments cause complete TLB Flush.
I want to evaluate cost of TLB shootdown including re-population vs. each entry shootdown (invlpg). While a similar study has been done in other kernels (e.g. L4 kernel), I am not aware if it has been done for Linux O/S.
Are there hooks or patches to test or evaluate TLB performance. Specifically, I would like to know where to make changes in Linux kernel to support each entry shootdown.
Questions may sound little naive, but any pointers or related work will be helpful to me.
Thanks in advance.
Regards, Vineet
| |