Message199114
| Author |
pitrou |
| Recipients |
christian.heimes, ncoghlan, pitrou |
| Date |
2013年10月06日.19:28:09 |
| SpamBayes Score |
-1.0 |
| Marked as misclassified |
Yes |
| Message-id |
<1381087689.25.0.264819051257.issue19183@psf.upfronthosting.co.za> |
| In-reply-to |
| Content |
Microbenchmarking hash computation (Linux, gcc 4.7.3):
* Short strings:
python -m timeit -s "b=b'x'*20" "hash(memoryview(b))"
- 64-bit build, before: 0.263 usec per loop
- 64-bit build, after: 0.263 usec per loop
- 32-bit build, before: 0.303 usec per loop
- 32-bit build, after: 0.358 usec per loop
* Long strings:
python -m timeit -s "b=b'x'*1000" "hash(memoryview(b))"
- 64-bit build, before: 1.56 usec per loop
- 64-bit build, after: 1.03 usec per loop
- 32-bit build, before: 1.61 usec per loop
- 32-bit build, after: 2.46 usec per loop
Overall, performance looks fine to me. |
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History
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| Date |
User |
Action |
Args |
| 2013年10月06日 19:28:09 | pitrou | set | recipients:
+ pitrou, ncoghlan, christian.heimes |
| 2013年10月06日 19:28:09 | pitrou | set | messageid: <1381087689.25.0.264819051257.issue19183@psf.upfronthosting.co.za> |
| 2013年10月06日 19:28:09 | pitrou | link | issue19183 messages |
| 2013年10月06日 19:28:09 | pitrou | create |
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