Messages in this thread | | | Date | Mon, 24 Dec 2001 11:52:58 +1100 | From | Anton Blanchard <> | Subject | Re: [PATCH] Scalable page cache - take two |
| |
Hi,
> This is the second mutation of the scalable page cache patch. It:
I ran the dbench test over it just to annoy Andrew:
http://samba.org/~anton/linux/pagecache_locking/2/
This is the still 12 way ppc64, the results are similar to the last test. It confirms that the current pagecache locking is a bottleneck for larger SMP machines.
We quickly hit the following spinlocks with the pagecache lock out of the way:
ext2_get_block: BKL refile_buffer: lru_list_lock remove_from_queues: lru_list_lock try_to_free_buffers: lru_list_lock d_lookup: dcache_lock ext2_discard_prealloc: BKL
Is someone working on removing the BKL from ext2 in 2.5?
Anton - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |