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21639: Tell the kernel to map in whole blocks with madvise
[arvados.git]
/
sdk
/
python
/
arvados
/
diskcache.py
diff --git
a/sdk/python/arvados/diskcache.py
b/sdk/python/arvados/diskcache.py
index b0ae364c88d32ccc1c7a67bb6621035dc65d22e0..3749298210c3b87a5b2b89ec90d53f469c65a92f 100644
(file)
--- a/
sdk/python/arvados/diskcache.py
+++ b/
sdk/python/arvados/diskcache.py
@@
-32,6
+32,8
@@
class DiskCacheSlot(object):
def get(self):
self.ready.wait()
+ if self.content is not None:
+ self.content.madvise(mmap.MADV_WILLNEED)
return self.content
def set(self, value):