Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!apple!agate!ucbvax!ucsfcgl!babar.mmwb.ucsf.edu!srp From: srp@babar.mmwb.ucsf.edu (Scott R. Presnell) Newsgroups: comp.sys.sgi Subject: Re: NTP and IRIX Message-ID: Date: 11 Dec 90 02:47:53 GMT References: Sender: daemon@cgl.ucsf.edu Lines: 28 scp@acl.lanl.gov (Stephen C. Pope) writes: > I've managed to get NTP running under IRIX 3.3.1/2, and it >works, but not well. The problem has to do with whatever the IRIX >equivalent of BSD's ``tickadj'' variable is - the quantum is set far >too large, and NTP has a hard time getting the kernel zeroed in on the >correct value to adjtime(2). > Can anyone out there suggest what is the correct kernel >variable to tweak, and what a reasonable value(s) might be for a 380 >and a personal? I hacked up ntpd on the on our iri to accept the "tickadj" var, multiply by 1000 and use it to set timetrim via the syssgi() function and SGI_SETTIMETRIM (there is also a SGI_GETTIMETRIM). Tickadj is in uS/S timetrim is in nS/S. I've been using a value of about -400000 nS/S (so tickadj = -400) for our 4D/20's and a 25: the logical clock stays synced with that. timetrim is a signed long. - Scott -- Scott Presnell +1 (415) 476-9890 Pharm. Chem., S-926 Internet: srp@cgl.ucsf.edu University of California UUCP: ...ucbvax!ucsfcgl!srp San Francisco, CA. 94143-0446 Bitnet: srp@ucsfcgl.bitnet