astral-sh/uv - CodSpeed

uv

Blog Docs Changelog

Performance History

Latest Results

Add cross-filesystem link tests with dedicated test env vars Replace UV_INTERNAL__TEST_EXPECT_REFLINK and UV_INTERNAL__TEST_DIR usage in link tests with two new env vars: - UV_INTERNAL__TEST_REFLINK_FS: path on a reflink-capable filesystem - UV_INTERNAL__TEST_TMP_FS: path on a non-reflink filesystem This enables comprehensive test coverage: - Same-device reflink (both dirs on reflink fs) - Same-device fallback (both dirs on non-reflink fs) - Cross-device clone fallback (reflink fs -> tmpfs and vice versa) - Cross-device hardlink fallback (must fall back to copy) - Cross-device symlink (should work across devices) - Cross-device copy (sanity check) The Linux CI job now creates both a btrfs loopback and a tmpfs mount. The macOS CI job sets TEST_REFLINK_FS to the runner temp (APFS).

zaniebot:claude/add-linux-reflink-support-Jerha

12 minutes ago

Add cross-filesystem link tests with dedicated test env vars Replace UV_INTERNAL__TEST_EXPECT_REFLINK and UV_INTERNAL__TEST_DIR usage in link tests with two new env vars: - UV_INTERNAL__TEST_REFLINK_FS: path on a reflink-capable filesystem - UV_INTERNAL__TEST_TMP_FS: path on a non-reflink filesystem This enables comprehensive test coverage: - Same-device reflink (both dirs on reflink fs) - Same-device fallback (both dirs on non-reflink fs) - Cross-device clone fallback (reflink fs -> tmpfs and vice versa) - Cross-device hardlink fallback (must fall back to copy) - Cross-device symlink (should work across devices) - Cross-device copy (sanity check) The Linux CI job now creates both a btrfs loopback and a tmpfs mount. The macOS CI job sets TEST_REFLINK_FS to the runner temp (APFS).

zaniebot:claude/add-linux-reflink-support-Jerha

23 minutes ago

Add cross-filesystem link tests with dedicated test env vars Replace UV_INTERNAL__TEST_EXPECT_REFLINK and UV_INTERNAL__TEST_DIR usage in link tests with two new env vars: - UV_INTERNAL__TEST_REFLINK_FS: path on a reflink-capable filesystem - UV_INTERNAL__TEST_TMP_FS: path on a non-reflink filesystem This enables comprehensive test coverage: - Same-device reflink (both dirs on reflink fs) - Same-device fallback (both dirs on non-reflink fs) - Cross-device clone fallback (reflink fs -> tmpfs and vice versa) - Cross-device hardlink fallback (must fall back to copy) - Cross-device symlink (should work across devices) - Cross-device copy (sanity check) The Linux CI job now creates both a btrfs loopback and a tmpfs mount. The macOS CI job sets TEST_REFLINK_FS to the runner temp (APFS).

zaniebot:claude/add-linux-reflink-support-Jerha

51 minutes ago

Add cross-filesystem link tests with dedicated test env vars Replace UV_INTERNAL__TEST_EXPECT_REFLINK and UV_INTERNAL__TEST_DIR usage in link tests with two new env vars: - UV_INTERNAL__TEST_REFLINK_FS: path on a reflink-capable filesystem - UV_INTERNAL__TEST_TMP_FS: path on a non-reflink filesystem This enables comprehensive test coverage: - Same-device reflink (both dirs on reflink fs) - Same-device fallback (both dirs on non-reflink fs) - Cross-device clone fallback (reflink fs -> tmpfs and vice versa) - Cross-device hardlink fallback (must fall back to copy) - Cross-device symlink (should work across devices) - Cross-device copy (sanity check) The Linux CI job now creates both a btrfs loopback and a tmpfs mount. The macOS CI job sets TEST_REFLINK_FS to the runner temp (APFS).

zaniebot:claude/add-linux-reflink-support-Jerha

1 hour ago

Default to clone (reflink) link mode on Linux On Linux, default to `LinkMode::Clone` (reflink) instead of `LinkMode::Hardlink`. The clone fallback chain is now: Clone -> Hardlink -> Copy, so on filesystems that don't support reflinks (e.g., ext4), we try one reflink, fail, then fall back to hardlinks — which is what we were doing before. The overhead of the single failed FICLONE ioctl is negligible (~80ms in benchmarks). On filesystems that support reflinks (btrfs, XFS, bcachefs), users get copy-on-write benefits automatically without needing to opt in. https://claude.ai/code/session_015S1a39fWo8vqMHhjUe8uoG

zaniebot:claude/add-linux-reflink-support-Jerha

2 hours ago

Fallback to hardlink after reflink failure before copying

rf-hl-fb

3 hours ago

Fallback to hardlink after reflink failure before copying

rf-hl-fb

3 hours ago

Fallback to hardlink after reflink failure before copying

rf-hl-fb

3 hours ago

Active Branches

Attempt to use reflinks by default on Linux

last run

12 minutes ago

-1%

Fallback to hardlink after reflink failure before copying

last run

3 hours ago

0%

Update Reqwest to `0.13.1`

last run

3 hours ago

+1%

© 2026 CodSpeed Technology

Home Terms Privacy Docs