In message <43607DD5.3020708_at_freebsd.org>, David Xu writes: >Check gettimeofday syscall, it follows every I/O syscall, I think >our gettimeofday is tooooooo expensive, if we can directly get time from >memory, the performance will be improved further. Why would anybody take a timestamp at all I/O syscalls ? "I wonder why my car can only go 30 km/h with the trunk full of concrete" ? In a data base application I could possibly understand a timestamp after every write. But after _all_ I/O syscalls ? That's just plain stupid... -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk_at_FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.Received on Thu Oct 27 2005 - 06:20:24 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:38:46 UTC