[GRASS-user] v.in.ascii slowness in GRASS 6.4.0
Thomas Adams
Thomas.Adams at noaa.gov
Wed Nov 4 19:33:52 EST 2009
Martin & Hamish,
I believe I know what the problem is (to a degree). I am running GRASS
in a network environment where GRASS is installed on one machine, my
user files are on a 2nd, my GRASS database is on a 3rd, and I am logged
into a 4th (all on Redhat Linux). So, reading my file over the -network-
must be causing the big slowdown. One week ago we installed a new
version of RedHat Linux on all of our networked machines (of which there
are a combination of 10 workstations and ~10 servers); something with
this new installation did something to slowdown what I was doing
previously. I can ssh into an independent machine where everything is
local and my import times are comparable to what Martin got:
$ time v.in.ascii in=xmrg0106200804z.ascii out=test --q
real 0m19.592s
user 0m12.269s
sys 0m3.116s
$ v.info test -t | grep points
points=65000
This is a problem for me because I was dependent on using v.in.ascii for
automatically processing some data and analyzing it in an operational
setting. Looks like I have to find a new combination of machines to use
within my environment.
Thanks for your help!
Tom
Martin Landa wrote:
> 2009/11/4 Hamish <hamish_b at yahoo.com>:
>
>> how many points in the file? (wc -l filename.txt)
>>
>
> 65k
>
>
>> what database backend?
>>
>
> in my case dbf (as default for 6.x).
>
> Martin
>
>
--
Thomas E Adams
National Weather Service
Ohio River Forecast Center
1901 South State Route 134
Wilmington, OH 45177
EMAIL: thomas.adams at noaa.gov
VOICE: 937-383-0528
FAX: 937-383-0033
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