Messages in this thread | | | Date | Wed, 18 Apr 2001 23:23:35 -0400 (EDT) | From | Alexander Viro <> | Subject | Re: Ext2 Directory Index - Delete Performance |
| |
On Wed, 18 Apr 2001, Rik van Riel wrote:
> On Thu, 19 Apr 2001, Daniel Phillips wrote: > > > OK, now I know what's happening, the next question is, what should be > > dones about it. If anything. > > [ discovered by alexey on #kernelnewbies ] > > One thing we should do is make sure the buffer cache code sets > the referenced bit on pages, so we don't recycle buffer cache > pages early. > > This should leave more space for the buffercache and lead to us > reclaiming the (now unused) space in the dentry cache instead...
Sorry, but that's just plain wrong. We shouldn't keep inode table in buffer-cache at all. And we should be more aggressive on icache - dcache looks sane now (recent 2.4.4-pre), but icache holds unused inodes for too long. And freeing them is very slow _and_ random - recipe for kmem_cache fragmentation.
/me sits down to port inode-table-in-pagecache to 2.4.4-pre4...
- 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/
| |