Repository navigation
perf(preview): cache the hardware concurrency - #65145
Open
CarlSchwan wants to merge 1 commit into
Open
CarlSchwan wants to merge 1 commit into
CarlSchwan wants to merge 1 commit into
Conversation
CarlSchwan
requested review from
Altahrim,
icewind1991,
leftybournes and
salmart-dev
and removed request for
a team
October 5, 2026 14:55
Every preview request reads /proc/cpuinfo twice to compute the default preview concurrency. The kernel generates that file on each read, which costs as much as looking up a cached preview. Cache the value in the local cache instead. Assisted-by: ClaudeCode:claude-opus-5-5 Signed-off-by: Carl Schwan <carl@carlschwan.eu>
susnux
approved these changes
Oct 5, 2026
CarlSchwan
force-pushed
the
carl/preview-concurrency-cache
branch
from
October 5, 2026 17:49
c8ee7ac to
9814868
Compare
leftybournes
approved these changes
Oct 6, 2026
This branch has not been deployed
This file contains hidden or 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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
4 participants
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Summary
Every preview request reads /proc/cpuinfo twice to compute the default preview concurrency. The kernel generates that file on each read, which costs as much as looking up a cached preview. Cache the value in the local cache instead.
Save: 3.7% of a cached-preview request in the profile
Checklist
3. to review, feature component)stable32)AI (if applicable)