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| mcdoker18 | hi folks. did you try to launch mistral with the pypy? mistral has a some of CPU-bound tasks, for example yaql and workflow parsing, sqlalchemy and etc. I think that it can improve performance. | 05:42 |
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| mcdoker18 | rakhmerov: How do you improve a scheduler performance?Can you share ideas a more detail? | 05:58 |
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| rakhmerov | mcdoker18: hi, yes, we know about these CPU-intensive things | 08:28 |
| rakhmerov | and keep improving them | 08:28 |
| rakhmerov | as far as Scheduler, there's many things to improve actually. First of all, it polls DB too agressively | 08:29 |
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| rakhmerov | we can do a smarter algorithm similar to what Quartz does, using thread-local info ti decrease a number of queries to DB | 08:29 |
| rakhmerov | mcdoker18: we're going to discuss it at the PTG and we'll have all the notes to share | 08:30 |
| mcdoker18 | rakhmerov: Ok, thank you. I will try to switch the Mistral to the Pypy and share a result | 08:39 |
| rakhmerov | pypy? Maybe I'm not following | 08:40 |
| rakhmerov | what do you mean by "pypy"? | 08:40 |
| mcdoker18 | https://pypy.org | 08:43 |
| apetrich | mcdoker18, pypy seems like a good idea to try. thanks! | 08:44 |
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| rakhmerov | hah.. I see | 08:55 |
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| rakhmerov | I've never tried it | 08:56 |
| rakhmerov | is it worth it really? | 08:56 |
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| apetrich | rakhmerov, aye. In an old job we used it a lot | 08:57 |
| rakhmerov | so the main feature is JIT? | 08:57 |
| apetrich | it used 30% of processing on a day to day basis | 08:57 |
| rakhmerov | this is what I understand, yeah.. But why is it supposed to take less memory? | 08:58 |
| apetrich | but we were doing a lot of processor bound stuff | 08:58 |
| apetrich | not sure about that. | 08:58 |
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| apetrich | we were not constrained by memory nearly as much as by processing so I never cared about that back then | 08:58 |
| rakhmerov | JIT is fine, yeah.. However I thought some of it is also built-in in other Python implementations | 08:59 |
| rakhmerov | ok | 08:59 |
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| rakhmerov | need to look at it anyway.. | 08:59 |
| rakhmerov | mcdoker18: btw, can you please rebase/finish your patches please? | 09:00 |
| rakhmerov | I believe some of them can be backported to queens | 09:01 |
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| apetrich | rakhmerov, pypy just used to mess up if you had something that inherit by both new style class AND old style class | 09:05 |
| apetrich | those were really slow | 09:05 |
| rakhmerov | ok | 09:05 |
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| openstackgerrit | Renat Akhmerov proposed openstack/mistral master: Fix decrepancy between action and workflow update https://review.openstack.org/476514 | 09:24 |
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| openstackgerrit | Merged openstack/mistral master: Explain better combinations of task names and engine commands in docs https://review.openstack.org/545692 | 10:04 |
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| rakhmerov | d0ugal__: please approve https://review.openstack.org/#/c/546557/ if you are OK with this backport | 10:29 |
| d0ugal__ | rakhmerov: I'll try and take a look - having big internet issues today | 10:30 |
| d0ugal__ | cc apetrich ^ | 10:30 |
| rakhmerov | ok | 10:31 |
| apetrich | d0ugal__, rakhmerov I can't +2 or +W backports | 10:32 |
| rakhmerov | this is my patch about docs | 10:32 |
| rakhmerov | apetrich: I know ) | 10:32 |
| d0ugal__ | apetrich: just so you know about my internet issues | 10:32 |
| rakhmerov | ok | 10:32 |
| apetrich | d0ugal__, and d0ugal___ and or d0ugal____ I know | 10:32 |
| d0ugal__ | lol | 10:33 |
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| openstackgerrit | Nguyen Hung Phuong proposed openstack/python-mistralclient master: Clean imports in code https://review.openstack.org/546563 | 10:48 |
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| mcdoker181818 | PyPy vs CPython Performance on OpenStack Neutron https://pythonfiles.wordpress.com/2017/05/04/pypy-neutron-measurements/ | 13:13 |
| mcdoker181818 | rakhmerov: Yeah, I update my all of MR this weekend. | 13:14 |
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| rakhmerov | thanks | 13:14 |
| mcdoker181818 | Optimizing OpenStack* Swift* Performance with PyPy* https://software.intel.com/en-us/articles/optimizing-openstack-swift-performance-with-pypy | 13:15 |
| rakhmerov | quite impressive, yes | 13:17 |
| rakhmerov | mcdoker181818: did you try Mistral with PyPy? ) | 13:17 |
| rakhmerov | if Rally has issues with accessing DB when using PyPy I believe Mistral will have too because there are very complicated data access patterns in Mistral | 13:18 |
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| mcdoker181818 | rakhmerov: Not yet. But i plan it this weekend too. I want to create a Docker image as proof of concept. | 13:23 |
| rakhmerov | ok | 13:23 |
| rakhmerov | let us know the results ) | 13:23 |
| mcdoker181818 | Of course) | 13:24 |
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