[Python-Dev] Opcode cache in ceval loop (original) (raw)

Serhiy Storchaka storchaka at gmail.com
Tue Feb 2 15:07:11 EST 2016


On 02.02.16 21:23, Yury Selivanov wrote:

Alright, I modified the code to optimize ALL code objects, and ran unit tests with the above tests excluded:

-- Max process mem (rumaxrss) = 131858432 -- Opcode cache number of objects = 42109 -- Opcode cache total extra mem = 10901106

Thank you for doing these tests. Now results are more convincing to me.

And asyncio tests:

-- Max process mem (rumaxrss) = 57081856 -- Opcode cache number of objects = 4656 -- Opcode cache total extra mem = 1766681

FWIW, here are stats for asyncio with only hot objects being optimized:

-- Max process mem (rumaxrss) = 54775808 -- Opcode cache number of objects = 121 -- Opcode cache total extra mem = 43521

Interesting, 57081856 - 54775808 = 2306048, but 1766681 - 43521 = 1723160. There are additional 0.5Mb lost during fragmentation.



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