Tux-UKUUG logo
Linux 2001 — Linux Developers' Conference
29 June - 1 July 2001,
Renold Building
, UMIST, Manchester

Andrea Arcangeli


Syscalls such as gettimeofday are very fast internally and get called with a very high frequency by some applications. The overhead of entering and exiting the kernel to run them is very significant. But moving gettimeofday to unprivileged userspace is not feasible because it needs to get information about interrupts and chipsets in the hardware.

Instead, since we cannot move gettimeofday into userspace, we'll see how we moved part of the x86-64 kernel into userspace and what this change means for userspace/glibc/gdb/exceptions.

Call for Papers Speakers Programme Banquet
Location Booking Form Accommodation Credits
Weather Forecast  

IBM - Main Sponsor
Astaro Network Firewall
Astaro Network Firewall


For more information please contact UKUUG Problems? e-mail webmaster
© Copyright 2001 UKUUG Ltd