[Info-vax] Anyone interested in another public access system
Bob Eager
rde42 at spamcop.net
Tue Apr 14 13:07:25 EDT 2009
On Tue, 14 Apr 2009 16:27:36 UTC, billg999 at cs.uofs.edu (Bill Gunshannon)
wrote:
> In article <176uZD2KcidF-pn2-MjxETVoPJi3D at rikki.tavi.co.uk>,
> "Bob Eager" <rde42 at spamcop.net> writes:
> > On Tue, 14 Apr 2009 15:10:15 UTC,
> > koehler at eisner.nospam.encompasserve.org (Bob Koehler) wrote:
> >
> >> In article <176uZD2KcidF-pn2-dw0bdCBZV4ZE at rikki.tavi.co.uk>, "Bob Eager" <rde42 at spamcop.net> writes:
> >> >
> >> > I agree with all of the above. But it does certainly affect performance.
> >> > I am willing to accept the lower performance in exchange for
> >> > reliability.
> >>
> >> You have a choice. On VMS in most HLL you can set the value of
> >> buffering when you open the file. Use more if you want speed and
> >> less if you want reliability. On UNIX you can force buffer flushes
> >> by calling sync()/fsync(). Use fewer if you want speed and more if
> >> you want reliability.
> >
> > With the number of users I had (and the commercial packages in use) that
> > was mostly out of my control.
>
> You could have had the filesystem mounted with the "sync" option thus
> forcing sync on all writes, just like VMS. Both have the capability,
> only reall difference is the default.
I was referring to VMS. I never managed a UNIX system (other than my own
ones, now).
--
Bob Eager
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