On Fri, 18 Aug 2006 16:44:01 -0700 Daniel Phillips <[EMAIL PROTECTED]> wrote:
> handwaving - The mmap(MAP_SHARED)-the-whole-world scenario should be fixed by mm-tracking-shared-dirty-pages.patch. Please test it and if you are still able to demonstrate deadlocks, describe how, and why they are occurring. - We expect that the lots-of-dirty-anon-memory-over-swap-over-network scenario might still cause deadlocks. I assert that this can be solved by putting swap on local disks. Peter asserts that this isn't acceptable due to disk unreliability. I point out that local disk reliability can be increased via MD, all goes quiet. A good exposition which helps us to understand whether and why a significant proportion of the target user base still wishes to do swap-over-network would be useful. - Assuming that exposition is convincing, I would ask that you determine at what level of /proc/sys/vm/min_free_kbytes the swap-over-network deadlock is no longer demonstrable. If there are any remaining demonstrable deadlock scenarios, please describe how they were created and, if possible, perform some analysis of them for us. sysrq-T and sysrq-M traces would be helpful. Once we have this information in hand, we will be in a better position to work out how to solve these problems. Thanks. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
