Re: [ANNOUNCE] ktimers subsystem

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, 20 Sep 2005, Thomas Gleixner wrote:

> Also the basic prerequisite for for high resolution timers is a fast and
> simple access to clock_monotonic rather than to a backward corrected
> clock_realtime representation. 

Yup that may be a reason to tolerate the add for realtime.

> We should rather ask glibc people why gettimeofday() / clock_getttime()
> is called inside the library code all over the place for non obvious
> reasons.

You can ask lots of application vendors the same question because its all 
over lots of user space code. The fact is that gettimeofday() / 
clock_gettime() efficiency is very critical to the performance of many 
applications on Linux. That is why the addtion of one add instruction may 
better be carefully considered. Many platforms can execute gettimeofday 
without having to enter the kernel.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]
  Powered by Linux