From: Arjan van de Ven <arjan@infradead.org>
To: bidulock@openss7.org
Cc: Theodore Tso <tytso@thunk.org>, linux-kernel@vger.kernel.org
Subject: Re: [RFC] [PATCH 0/8] Inode diet v2
Date: Wed, 21 Jun 2006 18:06:50 +0200 [thread overview]
Message-ID: <1150906010.3057.45.camel@laptopd505.fenrus.org> (raw)
In-Reply-To: <20060621084217.B7834@openss7.org>
> You need to save 48 bytes per inode to fit one more into a slab with
> a 32 byte L1 cache slot; 120 bytes per inode, 64 byte L1 cache slot.
> And that's just a generic inode_cache object. Something that is really
> used, like ext3_inode_cache or nfs_inode_cache is going to take more
> doing. Moving a field from the generic inode to the filesystem specific
> inode acheives nothing.
for the inode slab it would very much make sense to tell the slab
allocator to not do any kind of cacheline alignment at all, just because
of the wasted space...
next prev parent reply other threads:[~2006-06-21 16:07 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-21 12:51 Theodore Tso
2006-06-21 12:51 ` [RFC] [PATCH 1/8] inode_diet: Replace inode.u.generic_ip with inode.i_private Theodore Tso
2006-06-21 13:23 ` Jan Engelhardt
2006-06-21 14:44 ` Brian F. G. Bidulock
2006-06-21 15:37 ` Theodore Tso
2006-06-21 12:51 ` [RFC] [PATCH 2/8] inode-diet: Move i_pipe into a union Theodore Tso
2006-06-21 12:51 ` [RFC] [PATCH 3/8] inode-diet: Move i_bdev " Theodore Tso
2006-06-21 12:51 ` [RFC] [PATCH 4/8] inode-diet: Move i_cdev " Theodore Tso
2006-06-21 12:51 ` [RFC] [PATCH 5/8] inode-diet: Eliminate i_blksize and use a per-superblock default Theodore Tso
2006-06-21 12:51 ` [RFC] [PATCH 6/8] inode-diet: Move i_cindex from struct inode to struct file Theodore Tso
2006-06-21 12:51 ` [RFC] [PATCH 7/8] inode-diet: Use a union for i_blocks and i_size, i_rdev and i_devices Theodore Tso
2006-06-21 12:51 ` [RFC] [PATCH 8/8] inode-diet: Fix size of i_blkbits, i_version, and i_dnotify_mask Theodore Tso
[not found] ` <200606212335.00176.arnd@arndb.de>
2006-06-22 3:11 ` Theodore Tso
2006-06-21 14:42 ` [RFC] [PATCH 0/8] Inode diet v2 Brian F. G. Bidulock
2006-06-21 15:31 ` Nick Piggin
2006-06-21 16:06 ` Arjan van de Ven [this message]
2006-06-21 16:12 ` Brian F. G. Bidulock
2006-06-21 16:48 ` Theodore Tso
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