Messages in this thread | | | Date | Sat, 04 Mar 2000 12:30:54 +0100 | From | Manfred Spraul <> | Subject | Re: Help in DSM design |
| |
Larry McVoy wrote: > > Cache line miss, around 200ns.
I know this is of-topic, but I read that cache-line ping-pong is a problem for our spinlocks. Has anyone tried to move the spinlocks (*) into a special page, and mark that page as "write-trough"?
It should be possible to add a new ELF section, and mark the global spinlocks with __spinlockdata [like __initdata].
(*) I know that many spinlocks are located within other structures, but some (important) spinlocks are not:
* kernel_flag * tasklist_lock * runqueue_lock * global_bh_lock * pagecache_lock * pagemap_lru_lock * inode_lock * lru_list_lock * hash_table_lock * console_lock * kmap_lock * semaphore_lock [i386] * tlbstate_lock [i386]
-- Manfred
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |