Messages in this thread |  | | | Subject | Re: SLUB performance regression vs SLAB | | From | Andi Kleen <> | | Date | 05 Oct 2007 13:12:30 +0200 |
| |
Jens Axboe <jens.axboe@oracle.com> writes: > > Writing a small test module to exercise slub/slab in various ways > (allocating from all cpus freeing from one, as described) should not be > too hard. Perhaps that would be enough to find this performance > discrepancy between slab and slub?
You could simulate that by just sending packets using unix sockets between threads bound to different CPUs. Sending a packet allocates; receiving deallocates.
But it's not clear that will really simulate the cache bounce environment of the database test. I don't think all passing of data between CPUs using slub objects is slow.
-Andi - 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/
|  |