Messages in this thread | | | Date | Mon, 17 Mar 2003 12:23:57 -0800 | From | Andrew Morton <> | Subject | Re: [Ext2-devel] [PATCH] distributed counters for ext2 to avoid group scaning |
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Matthew Wilcox <willy@debian.org> wrote: > > Anyway, I think dcounters should probably be allocated from kmalloc_percpu() > rather than as part of the dcounter struct.
That will still consume up to 4 kilobytes per 32-bit counter. We'd need to merge Kiran & Dipankar's interlace allocator to do this less grossly.
Which is why I'm waiting to see some profiles and benchmarks. Judging from the last set of profiles, in which ext2_count_free_blocks() was not present, this may not be justified.
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