Optimize creation of the memory heap #178
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
joergroedel
requested changes
Dec 14, 2023
Signed-off-by: Jon Lange <jlange@microsoft.com>
joergroedel
approved these changes
Dec 15, 2023
Comment on lines
+685
to
+686
| self.free_page_raw(i, MAX_ORDER - 1); | ||
| self.mark_compound_page(i, MAX_ORDER - 1); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
When the heap free list is first constructed, the list of pages is divided into a region of free page groups, one of which is aligned to a multiple of the size of the maximum free order, and the others are unaligned head/tail regions. The aligned group is freed directly to the maximum order bucket, which avoids the need to do neighbor searching in order to construct the large buckets. No similar optimization is performed on intermediate sizes of the unaligned head/tail regions because they are too small to worry about.