Messages in this thread | | | Subject | Re: [Ext2-devel] Re: [RFC][PATCH 0/2]Extend ext3 filesystem limit from 8TB to 16TB | From | Laurent Vivier <> | Date | Thu, 13 Apr 2006 17:26:39 +0200 |
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Le lun 10/04/2006 à 10:24, Andrew Morton a écrit : > Laurent Vivier <Laurent.Vivier@bull.net> wrote: > > > > Does the attached patch look like the thing you though about ? > > I guess so. But it'll need a lot of performance testing on big SMP > to work out what the impact is.
I made some tests with dbench:
IBM x440: 8 CPUs hyperthreaded = 16 CPUs (Xeon at 1.4 Ghz)
with percpu_counter:
Throughput 188.365 MB/sec 16 procs Throughput 226.164 MB/sec 32 procs Throughput 142.913 MB/sec 64 procs
with atomic_long_t:
Throughput 194.385 MB/sec 16 procs Throughput 237.273 MB/sec 32 procs Throughput 160.751 MB/sec 64 procs
Regards, Laurent -- Laurent Vivier Bull, Architect of an Open World (TM) http://www.bullopensource.org/ext4 [unhandled content-type:application/pgp-signature] | |