[
https://issues.apache.org/jira/browse/ARROW-17281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17574160#comment-17574160
]
Antoine Pitrou commented on ARROW-17281:
----------------------------------------
cc [~yibocai]. I think the cache lookup code in Windows is simply wrong (it
sums the sizes of all caches of a given level).
> [C++] Windows reports aggregated L-Cache sizes
> ----------------------------------------------
>
> Key: ARROW-17281
> URL: https://issues.apache.org/jira/browse/ARROW-17281
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Affects Versions: 9.0.0
> Reporter: Jacob Wujciak-Jens
> Priority: Major
>
> On Windows 10 Version 10.0.19044 Build 19044 {{CpuInfo::CacheLevel}} over
> reports the L-cache size:
> 640K for L1
> 10M for L2
> These values are also reported by Windows resource monitor.
> It seems that windows is reporting the total size of cache for each core
> aggregated as one value. Possibly due to "intel smart cache" cache sharing?
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
