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Diffstat (limited to 'Misc/NEWS.d/next/Library/2017-07-23-11-33-10.bpo-30919.5dYRru.rst')
| -rw-r--r-- | Misc/NEWS.d/next/Library/2017-07-23-11-33-10.bpo-30919.5dYRru.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Library/2017-07-23-11-33-10.bpo-30919.5dYRru.rst b/Misc/NEWS.d/next/Library/2017-07-23-11-33-10.bpo-30919.5dYRru.rst new file mode 100644 index 0000000..44c3a22 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2017-07-23-11-33-10.bpo-30919.5dYRru.rst @@ -0,0 +1,4 @@ +Fix shared memory performance regression in multiprocessing in 3.x. + +Shared memory used anonymous memory mappings in 2.x, while 3.x mmaps actual +files. Try to be careful to do as little disk I/O as possible. |