USE_CACHE_ALIGNED still helpful?

[tim-one]

BPO	524062
Nosy	@tim-one, @jackjansen

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

Show more details

GitHub fields:

assignee = 'https://github.com/jackjansen'
closed_at = <Date 2002-04-11.21:57:32.000>
created_at = <Date 2002-02-28.21:53:42.000>
labels = ['interpreter-core']
title = 'USE_CACHE_ALIGNED still helpful?'
updated_at = <Date 2002-04-11.21:57:32.000>
user = 'https://github.com/tim-one'

bugs.python.org fields:

activity = <Date 2002-04-11.21:57:32.000>
actor = 'tim.peters'
assignee = 'jackjansen'
closed = True
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2002-02-28.21:53:42.000>
creator = 'tim.peters'
dependencies = []
files = []
hgrepos = []
issue_num = 524062
keywords = []
message_count = 3.0
messages = ['9465', '9466', '9467']
nosy_count = 2.0
nosy_names = ['tim.peters', 'jackjansen']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue524062'
versions = []

[tim-one]

Jack asked for this report:

"""
MacPython uses it. At the time it was put in it caused
a 15% increase in Pystones because dictionary entries
were aligned in cache lines. But: this was in the PPC
601 and 604 era, I must say that I've never tested
whether it made any difference on G3 and G4.

Put in a bug report in my name, and one day I'll get
around to testing whether it still makes a difference
on current hardware and rip it out if it doesn't.
"""

[jackjansen]

Logged In: YES
user_id=45365

As MacPython normally uses the standard MSL malloc nowadays (and will probably use pymalloc in the future) the benefit of USE_CACHE_ALIGNED has disappeared. I've removed it.

[tim-one]

Logged In: YES
user_id=31435

Since Jack removed this moldy old symbol, closing this as
Fixed.