[RC5] ogr-25

Charles Franks Charlz at lvcablemodem.com
Wed Aug 9 20:57:59 EDT 2000


Looks to me that they OGR-25 stubs are taking about the same as a
similiarly sized (as far as total nodes) OGR-24 stub.

In general though the OGR-25 stubs are much larger and hence overall
everthing takes longer.. the smallest OGR-25 stub I could find in my
buffer was 43Gnodes with an average of about 80Gnodes. On the other hand
OGR-24 went as low as .5Gnodes with an average of somewhere around
7Gnodes (yes its a guesstimate). Current OGR-25 stubs are definately not
for slower computers.

>From my client log:

[Aug 02 02:05:36 UTC] Completed OGR stub 24/2-5-13-9-14 (80,097,228,542
nodes)
                      0.10:34:11.23 - [2,104,983.67 nodes/sec]


[Aug 10 01:27:55 UTC] Completed OGR stub 25/2-4-31-13-15-5
(77,853,913,561 nodes)
                      0.09:04:12.51 - [2,384,315.98 nodes/sec]


As for the big variation in the completion time of your two stubs I'm
not really sure... maybe it got to a point where it could abandon the
rest of the stub??? Any OGR experts want to talk to this???

Charles


Rick Murphy wrote:

> I've got to agree. There's something not right in how long these stubs are
> taking - the duration has nothing to do with the node count. For example,
> on a P3/650:
> 
> [Aug 07 20:27:01 UTC] Completed OGR stub 25/1-10-2-15-30-4 (155,200,455,141
> nodes)
>                        0.00:34:18.47 - [3,473,417.95 nodes/sec]
> [Aug 07 20:27:01 UTC] Loaded OGR stub 25/1-10-2-15-29-8
> [Aug 07 20:27:01 UTC] Summary: 1 OGR packet (7.14 Gnodes)
>                        0.00:34:18.47 - [3.47 Mnodes/s]
> [Aug 07 20:27:01 UTC] 18 OGR packets (18 work units) remain in buff-in.ogr
> [Aug 07 20:27:01 UTC] 1 OGR packet (1 work unit) is in buff-out.ogr
> [Aug 08 09:11:32 UTC] Completed OGR stub 25/1-10-2-15-29-8 (172,332,607,587
> nodes)
>                        0.12:44:38.62 - [3,756,272.44 nodes/sec]
> 
> The first stub is 155Gnodes, the second 172Gnodes. The first took 35
> minutes, the second almost 13 hours. Why such a difference? Notice that the
> nodes/sec rates are about the same, so it wasn't system load. So far, I'm
> seeing many more 10+ hour stubs on this machine than 30 minute ones. For my
> lowly Pentium 166/MMX the defaults are sending me *TWO WEEKS* worth of
> stubs per download. I'm trying to figure out how to limit the fetch to two
> stubs.
>          -Rick
> 
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