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| openstackgerrit | Merged openstack/oslo.vmware master: Updated from global requirements https://review.openstack.org/470539 | 00:50 |
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| openstackgerrit | Vu Cong Tuan proposed openstack/taskflow master: Replace assertRaisesRegexp with assertRaisesRegex https://review.openstack.org/470591 | 05:30 |
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| openstackgerrit | Vu Cong Tuan proposed openstack/taskflow master: Replace assertRaisesRegexp with assertRaisesRegex https://review.openstack.org/470591 | 06:41 |
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| openstackgerrit | Merged openstack/oslo.service master: Updated from global requirements https://review.openstack.org/470537 | 09:11 |
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| openstackgerrit | Monty Taylor proposed openstack-dev/pbr master: Return version from egg-info and dist-info directly https://review.openstack.org/470444 | 12:43 |
| openstackgerrit | OpenStack Proposal Bot proposed openstack/oslo.versionedobjects master: Updated from global requirements https://review.openstack.org/470264 | 13:13 |
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| openstackgerrit | Monty Taylor proposed openstack-dev/pbr master: Add support for caching pkg_resources data https://review.openstack.org/470630 | 14:22 |
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| openstackgerrit | Monty Taylor proposed openstack-dev/pbr master: Return version from egg-info and dist-info directly https://review.openstack.org/470444 | 15:10 |
| openstackgerrit | Monty Taylor proposed openstack-dev/pbr master: Add support for caching pkg_resources data https://review.openstack.org/470630 | 15:10 |
| openstackgerrit | Monty Taylor proposed openstack-dev/pbr master: Add another monkeypatch to sphinx https://review.openstack.org/470633 | 15:10 |
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| lifeless | mordred: clarkb: oh hai; re the setuptools perf work - I'll be interested to see what comes of it, but I have questions :) - specifically, is there a plan to safely entirely avoid the iteration of entry points on disk, and - are we sure that the cost is what we think it is? | 18:52 |
| lifeless | mordred: clarkb: remembering that with disk IO things, first-use is often blamed, but all-uses have to be avoided to actually improve things | 18:52 |
| clarkb | half the cost isnt even disk io is a sort... I've run it through the profiler and at least for the initial import cost it seems pretty clear. And I'm faily certain it caches the data at that point so you dont hit disk anymore | 19:00 |
| clarkb | lifeless: just run import pkg_resources through cProfile and you'll see | 19:01 |
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| clarkb | though I suppose sort cost is comparing cpu against disk read | 19:03 |
| clarkb | so my fast ssd does well.compared to low power sandy bridge cpu | 19:03 |
| clarkb | as for safely avoiding iteration of entrypoints on disk I havent had a chance to review mordred's changes likely need more brainpower than available saturday | 19:08 |
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| mordred | clarkb, lifeless: yah - totally agree that all use is important vs. first use. also, profiling to see if the changes there are actually an improvement is _definitely_ important | 21:43 |
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| mordred | consider those a straw-man that we can poke at | 21:45 |
| mordred | I'm especially interested in how it does or doesn't affect anything for dirk's extra-slow-nfs-plus-tons-of-packages case | 21:47 |
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| lifeless | clarkb: cProfile will distort high call frequency costs - it can be extremely cheap if you use e.g. timeit to microbenchmark; its one of the issues with cprofile that e.g. perf doesn't have | 22:18 |
| lifeless | mordred: dirk ? and what - NFS is slow, I'm just amazed at that relevation :) | 22:19 |
| lifeless | (in all seriousness: NFS can be tuned for better cache hits on clients... and running e.g. git against it is also going to pay network costs. Is this a real use case we have?) | 22:20 |
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| lifeless | or more of a 'well I do this and it hurts... so don't do that?' scenario? | 22:21 |
| clarkb | well it also hurts on not slow local ssd | 22:21 |
| clarkb | it just hurts more on nfs | 22:21 |
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| lifeless | clarkb: sure, but which *bit* hurts - the import of pkg_resources? or the big scan ? | 22:30 |
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| clarkb | the big scan happens when you import pkg_resources its the cost of importing pkg_resources | 22:38 |
| mordred | yah - and then the issue is exacerbated when the big scan happens every time you run "openstack blah" anything - so if you're doing scripts of that, it apparently adds up | 22:41 |
| mordred | I don't do that myself, so it's not a personal issue I'm solving | 22:41 |
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