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It appears that random access to the big mmapped items buffer, e.g. in edge_encode_items causes a very suboptimal read IO pattern if the mmapped area doesn't fit in memory, making encode_trails extremely slow under some conditions.
The text was updated successfully, but these errors were encountered:
It appears that random access to the big mmapped
items
buffer, e.g. inedge_encode_items
causes a very suboptimal read IO pattern if the mmapped area doesn't fit in memory, makingencode_trails
extremely slow under some conditions.The text was updated successfully, but these errors were encountered: