4 ms·
Defender does the scanning on CloseHandle() calls in untrusted code which can block the thread for even up to ~10ms (including other NTFS filter drivers) which
by for_xyz 7y ago
Defender does the scanning on CloseHandle() calls in untrusted code which can block the thread for even up to ~10ms (including other NTFS filter drivers) which is significant if you do open() close() pairs a lot.
More info about the similar issue and solution is apparently to sign the application [1]
[1] https://github.com/rust-lang/rustup/issues/1540#issuecomment-491721670 https://github.com/rust-lang/rustup/issues/1540#issuecomment...
- ahartmetz 7y agoI wonder if my former Windows using coworkers knew about that! They were quite good though so if there was something to know at the time, they probably did. Common knowledge in the office was that Windows small file I/O performance is about 1/10th of Linux, probably due to NTFS and ACLs being expensive to evaluate.