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Author Mark.Shannon
Recipients Mark.Shannon, carljm, corona10, dino.viehland, eelizondo, gregory.p.smith, nascheme, pablogsal, pitrou, shihai1991, steve.dower, tim.peters, vstinner
Date 2020-04-16.18:41:10
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Do you have more details on your comparison?
I'm somewhat puzzled how a version that does no more work and has no jumps is slower.

The memory hit is not immediate, but making the object header immutable prevents changes like
which would potentially save the two word per object overhead that the cyclic GC currently imposes.
Date User Action Args
2020-04-16 18:41:10Mark.Shannonsetrecipients: + Mark.Shannon, tim.peters, nascheme, gregory.p.smith, pitrou, vstinner, carljm, dino.viehland, steve.dower, corona10, pablogsal, eelizondo, shihai1991
2020-04-16 18:41:10Mark.Shannonsetmessageid: <>
2020-04-16 18:41:10Mark.Shannonlinkissue40255 messages
2020-04-16 18:41:10Mark.Shannoncreate