details commands and procedures in MPE that can improve your
productivity with HP 3000 systems. Send your tips to email@example.com.
trying to find information on the Heat Dissipation for a Model 10
disk array, specifically the maximum load BTUs. Where can I find this
dont need to reference an HP site for this information.
Its available on the nameplate on the back of your device. BTUs
are a unit of work (or energy or heat; the concepts are all
equivalent). Kilowatts are a unit of power (work expended per unit
time), thus kilowatt-hours (units appropriate for the time integral
of power) are equivalent to BTUs.
If we presume
that all of the electrical energy flowing into an electrical device
is dissipated as heat (which is not only a good first-order
approximation, its also the most conservative estimate), then
the formula of interest is: 1 kilowatt-hour = 3413 BTUs.
That is, a 100W
(or 100VA) device will emit at maximum 341 BTUs in one hour. HP
however is conservative in its estimates of power draws, so the real
number will probably lie somewhere between 50 and 70 percent of such
a number calculated off of the nameplate.
MPE intrinsic FPOINT work on Large Files, those greater than
course it does. FPOINT takes a record number, and Large Files
cant have any more records than not-Large files, so
theres no issue with FPOINT or any of the rest of the
Intrinsics for that matter.
possible to set a variable to the result of an finfo across a DSLINE
connection? I want to retrieve the status of a particular file on the
cannot do it directly. One way of doing it, however, is to create a
file equation on the remoted system that includes a
nodespec (read help all for file) for the
originating system. Then use this command
file equation will put the information on your originating system. if
its a one-liner file, its fairly easy to get the input:
(input myvar < finfofle). It involves some work, but its not
I have a
port in an HP 3000 and I want to know the application that is
currently using that port. Is there any command that can show me the
applications accessing a particular port?
Miller and Jeff Kell reply:
for call sockets. Listeners are shown in port order.
had a problem with an IMAGE B-Tree index. A search like
Z@ (where Z was greater than all present key values) took
a long time to come back. Four minutes for the DBFIND! On our test
system I tried dropindex/addindex on a restored copy of the database
and that seems to have fixed the problem. This index is the built-in
IMAGE kind, not Omnidex or Superdex. There were 1.4 million entries
in the manual master dataset. So should we regularly re-index our
one of those it depends answers. If the dataset is fairly
stable without a lot of add/delete, then it could be re-built less
frequently than the index for a set that experiences frequent key
add/change/delete activity. Keep in mind that KSAM/KSAMXL operates
using a key area and a data area. The key
area is dynamically maintained as a balanced tree whenever values are
added/removed. However, the data portion is a first-come,
first-serve approach so its possible that the data for
logically adjacent values are spread all over this area causing IO to
be extensive. Especially when doing wild-card qualifications and it
becomes necessary for the data entries to be retrieved and evaluated
against the request.
So the answer is
yes, it is a good idea to re-built the indexes periodically. But at
what frequency would have to be determined on an individual basis
simply because the dynamics of the data and the affect it has on data
locality are generally not easily predictable.
searched the archives and find only a single reference to Device
Class Limit from 1996 that listed it as 450. Is that number still
valid, and if not, what is the current limit?
find this on HP's Jazz Web site at jazz.external.hp.com/papers/limits/os_limits.html
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