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Groups > linux.kernel > #1457823 > unrolled thread
| Started by | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| First post | 2016-08-08 16:10 +0200 |
| Last post | 2016-08-08 16:10 +0200 |
| Articles | 1 — 1 participant |
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Re: [RFC PATCH 3/4] Make deadline max-heap faster avoiding real swaps on heapify ops. Peter Zijlstra <peterz@infradead.org> - 2016-08-08 16:10 +0200
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Date | 2016-08-08 16:10 +0200 |
| Subject | Re: [RFC PATCH 3/4] Make deadline max-heap faster avoiding real swaps on heapify ops. |
| Message-ID | <s3TpD-2p3-23@gated-at.bofh.it> |
On Tue, Jul 19, 2016 at 11:44:52AM +0200, Tommaso Cucinotta wrote: > This change achieves up to 10% of speed-up for cpudl_set() calls, as > measured with a andomly generated workload of 1K,10K,100K random heap > insertions and deletions (75% cpudl_set() calls with is_valid=1 and > 25% with is_valid=0), and randomly generated cpu IDs, with up to 256 > CPUs, as measured on an Intel Core2 Duo. Changelog fails to explain _what_ the change is. Some details on the change in implementation and why this is faster would be good.
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