Re: [Linux-ia64] kernel update (relative to 2.4.4)

Jack Steiner
2001-05-09T13:38:42Z

>> BIG CAVEAT: even though the kernel currently is syncing the cycle
>> counters, application code MUST NOT rely on this. Instead, if an
>> application needs fine-grained and light-weight timestamps, it should
>> use the POSIX *clock* routines that Uli added recently to libc. I can
>> almost guarantee you that future machines will NOT have synchronized
>> clocks (and we'll also want to support systems where different CPUs
>> have different clock speeds) and because of this, the *clock* routines
>> and gettimeofday() are the recommended and RELIABLE way for obtaining
>> fine-grained timestamps.

FYI, The IA64 system being built by SGI has multiple nodes. The clocks on
different nodes are not synchronized.

--
Thanks

Jack Steiner (651-683-5302) (vnet 233-5302) steiner@sgi.com