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[IDD #TTR-495389]: Slow access to local datasets through ADDE



Hi Samuel,

re:
> I've opened our allowable hosts, slightly, to allow any connection from
> the following subnets: 128.117.156, 128.117.140, and 131.156.8 (I believe
> weather.admin.niu.edu is in this subnet).  Please let me know if this helps.

It does help; I am no able to SSH as both 'mcidas' and 'ldm'.

Right off, I see the problem with accessing all of the imagery in the
RTIMAGES/ANTARCTIC dataset:  only the images from 20080206 are in
an appropriately named subdirectory of 
/data/ldm/mcidas/images/sat/ANTARCTIC/4km/IR.
The rest of the images are in under 
/data/ldm/mcidas/images/sat/ANTARCTIC/4km/IR itself:

-bash-2.05b$ ls /data/ldm/mcidas/images/sat/ANTARCTIC/4km/IR
20080206          IR_20071213_1200  IR_20071227_0900  IR_20080122_1800
IR_20071207_1200  IR_20071213_1500  IR_20071227_1500  IR_20080123_0000
IR_20071207_1500  IR_20071213_1800  IR_20071227_2100  IR_20080123_0300
IR_20071207_1800  IR_20071213_2100  IR_20071229_0300  IR_20080123_0900
IR_20071207_2100  IR_20071214_0000  IR_20071229_0900  IR_20080123_1500
IR_20071208_0000  IR_20071214_1200  IR_20071229_1200  IR_20080124_0000
IR_20071208_0300  IR_20071214_1500  IR_20071229_1800  IR_20080124_1500
IR_20071208_0600  IR_20071215_0600  IR_20071229_2100  IR_20080125_0300
IR_20071208_0900  IR_20071215_0900  IR_20071230_0300  IR_20080125_1200
IR_20071208_1200  IR_20071215_2100  IR_20071230_0900  IR_20080125_1500
IR_20071208_1500  IR_20071216_0900  IR_20071230_1500  IR_20080126_0900
IR_20071208_1800  IR_20071216_1500  IR_20071231_0000  IR_20080126_1500
IR_20071208_2100  IR_20071216_2100  IR_20071231_1500  IR_20080127_0300
IR_20071209_0000  IR_20071217_0300  IR_20080101_0300  IR_20080127_1200
IR_20071209_0300  IR_20071217_0600  IR_20080102_0900  IR_20080127_1500
IR_20071209_0600  IR_20071217_0900  IR_20080103_0000  IR_20080127_2100
IR_20071209_0900  IR_20071217_1500  IR_20080104_1800  IR_20080128_0300
IR_20071209_1200  IR_20071217_2100  IR_20080105_0300  IR_20080128_2100
IR_20071209_1500  IR_20071218_0000  IR_20080105_1800  IR_20080129_0600
IR_20071209_1800  IR_20071218_0300  IR_20080106_0300  IR_20080129_0900
IR_20071209_2100  IR_20071218_0600  IR_20080107_0300  IR_20080129_1200
IR_20071210_0000  IR_20071218_1800  IR_20080107_1200  IR_20080129_1500
IR_20071210_0300  IR_20071219_0300  IR_20080108_0000  IR_20080129_2100
IR_20071210_0600  IR_20071219_0600  IR_20080108_0900  IR_20080130_0300
IR_20071210_0900  IR_20071219_0900  IR_20080108_1200  IR_20080130_1500
IR_20071210_1200  IR_20071221_0300  IR_20080109_0300  IR_20080130_2100
IR_20071210_1500  IR_20071221_0900  IR_20080110_1200  IR_20080131_0900
IR_20071210_1800  IR_20071221_1500  IR_20080110_1500  IR_20080131_1500
IR_20071210_2100  IR_20071221_2100  IR_20080110_1800  IR_20080131_2100
IR_20071211_0000  IR_20071222_0300  IR_20080110_2100  IR_20080201_0000
IR_20071211_0300  IR_20071222_0900  IR_20080111_0900  IR_20080201_0900
IR_20071211_0600  IR_20071222_2100  IR_20080112_1500  IR_20080201_1200
IR_20071211_0900  IR_20071223_0300  IR_20080113_0300  IR_20080202_0300
IR_20071211_1200  IR_20071223_0600  IR_20080114_0300  IR_20080202_1500
IR_20071211_1500  IR_20071223_0900  IR_20080114_2100  IR_20080203_0300
IR_20071211_1800  IR_20071223_1200  IR_20080115_0300  IR_20080203_0600
IR_20071211_2100  IR_20071223_1500  IR_20080115_0600  IR_20080203_1500
IR_20071212_0000  IR_20071224_0300  IR_20080116_0900  IR_20080203_2100
IR_20071212_0300  IR_20071224_0900  IR_20080116_2100  IR_20080204_0300
IR_20071212_0600  IR_20071224_1200  IR_20080118_0900  IR_20080204_0900
IR_20071212_0900  IR_20071224_1500  IR_20080118_2100  IR_20080204_1500
IR_20071212_1200  IR_20071224_2100  IR_20080119_0300  IR_20080204_2100
IR_20071212_1500  IR_20071225_0000  IR_20080119_0900  IR_20080205_0300
IR_20071212_1800  IR_20071225_1200  IR_20080119_2100  IR_20080205_0900
IR_20071212_2100  IR_20071225_1500  IR_20080120_0000  IR_20080205_1500
IR_20071213_0000  IR_20071225_2100  IR_20080120_2100  IR_20080206_0300
IR_20071213_0300  IR_20071226_0300  IR_20080121_0000  IR_20080206_0900
IR_20071213_0600  IR_20071226_2100  IR_20080121_1200
IR_20071213_0900  IR_20071227_0600  IR_20080122_0300

Also, there are no images from today, 20080207.

What is needed is the creation of daily directories and movement of appropriate
images into those directories.  For example:

<as 'ldm'>
cd /data/ldm/mcidas/images/sat/ANTARCTIC/4km/IR
mkdir 20071207
mv IR_20071207* 20071207
mkdir 20081208
mv IR_20071208* 20071208
etc.

After doing this for you, I am able to list out all of the Antarctic IR
images you have:

<as 'mcidas' on my home machine>

IMGLIST RTIMAGES/ANTARCTIC.ALL
Image file directory listing for:RTIMAGES/ANTARCTIC
 Pos Satellite/         Date       Time      Center   Band(s)
     sensor                                 Lat  Lon
 --- -------------  ------------  --------  ---- ---- ------------
   1  G-9 IMG        7 DEC 07341  12:00:00   -90    5 4
   2  G-9 IMG        7 DEC 07341  15:00:00   -90    5 4
   3  G-9 IMG        7 DEC 07341  18:00:00   -90    5 4
   4  G-9 IMG        7 DEC 07341  21:00:00   -90    5 4
   5  G-9 IMG        8 DEC 07342  00:00:00   -90    5 4
   6  G-9 IMG        8 DEC 07342  03:00:00   -90    5 4
   7  G-9 IMG        8 DEC 07342  06:00:00   -90    5 4
   8  G-9 IMG        8 DEC 07342  09:00:00   -90    5 4
   9  G-9 IMG        8 DEC 07342  12:00:00   -90    5 4
  10  G-9 IMG        8 DEC 07342  15:00:00   -90    5 4
  11  G-9 IMG        8 DEC 07342  18:00:00   -90    5 4
  12  G-9 IMG        8 DEC 07342  21:00:00   -90    5 4
  13  G-9 IMG        9 DEC 07343  00:00:00   -90    5 4
  14  G-9 IMG        9 DEC 07343  03:00:00   -90    5 4
  15  G-9 IMG        9 DEC 07343  06:00:00   -90    5 4
  16  G-9 IMG        9 DEC 07343  09:00:00   -90    5 4
  17  G-9 IMG        9 DEC 07343  12:00:00   -90    5 4
  18  G-9 IMG        9 DEC 07343  15:00:00   -90    5 4
  19  G-9 IMG        9 DEC 07343  18:00:00   -90    5 4
  20  G-9 IMG        9 DEC 07343  21:00:00   -90    5 4
  21  G-9 IMG       10 DEC 07344  00:00:00   -90    5 4
  22  G-9 IMG       10 DEC 07344  03:00:00   -90    5 4
  23  G-9 IMG       10 DEC 07344  06:00:00   -90    5 4
  24  G-9 IMG       10 DEC 07344  09:00:00   -90    5 4
  25  G-9 IMG       10 DEC 07344  12:00:00   -90    5 4
  26  G-9 IMG       10 DEC 07344  15:00:00   -90    5 4
  27  G-9 IMG       10 DEC 07344  18:00:00   -90    5 4
  28  G-9 IMG       10 DEC 07344  21:00:00   -90    5 4
  29  G-9 IMG       11 DEC 07345  00:00:00   -90    5 4
  30  G-9 IMG       11 DEC 07345  03:00:00   -90    5 4
  31  G-9 IMG       11 DEC 07345  06:00:00   -90    5 4
  32  G-9 IMG       11 DEC 07345  09:00:00   -90    5 4
  33  G-9 IMG       11 DEC 07345  12:00:00   -90    5 4
  34  G-9 IMG       11 DEC 07345  15:00:00   -90    5 4
  35  G-9 IMG       11 DEC 07345  18:00:00   -90    5 4
  36  G-9 IMG       11 DEC 07345  21:00:00   -90    5 4
  37  G-9 IMG       12 DEC 07346  00:00:00   -90    5 4
  38  G-9 IMG       12 DEC 07346  03:00:00   -90    5 4
  39  G-9 IMG       12 DEC 07346  06:00:00   -90    5 4
  40  G-9 IMG       12 DEC 07346  09:00:00   -90    5 4
  41  G-9 IMG       12 DEC 07346  12:00:00   -90    5 4
  42  G-9 IMG       12 DEC 07346  15:00:00   -90    5 4
  43  G-9 IMG       12 DEC 07346  18:00:00   -90    5 4
  44  G-9 IMG       12 DEC 07346  21:00:00   -90    5 4
  45  G-9 IMG       13 DEC 07347  00:00:00   -90    5 4
  46  G-9 IMG       13 DEC 07347  03:00:00   -90    5 4
  47  G-9 IMG       13 DEC 07347  06:00:00   -90    5 4
  48  G-9 IMG       13 DEC 07347  09:00:00   -90    5 4
  49  G-9 IMG       13 DEC 07347  12:00:00   -90    5 4
  50  G-9 IMG       13 DEC 07347  15:00:00   -90    5 4
  51  G-9 IMG       13 DEC 07347  18:00:00   -90    5 4
  52  G-9 IMG       13 DEC 07347  21:00:00   -90    5 4
  53  G-9 IMG       14 DEC 07348  00:00:00   -90    5 4
  54  G-9 IMG       14 DEC 07348  12:00:00   -90    5 4
  55  G-9 IMG       14 DEC 07348  15:00:00   -90    5 4
  56  G-9 IMG       15 DEC 07349  06:00:00   -90    5 4
  57  G-9 IMG       15 DEC 07349  09:00:00   -90    5 4
  58  G-9 IMG       15 DEC 07349  21:00:00   -90    5 4
  59  G-9 IMG       16 DEC 07350  09:00:00   -90    5 4
  60  G-9 IMG       16 DEC 07350  15:00:00   -90    5 4
  61  G-9 IMG       16 DEC 07350  21:00:00   -90    5 4
  62  G-9 IMG       17 DEC 07351  03:00:00   -90    5 4
  63  G-9 IMG       17 DEC 07351  06:00:00   -90    5 4
  64  G-9 IMG       17 DEC 07351  09:00:00   -90    5 4
  65  G-9 IMG       17 DEC 07351  15:00:00   -90    5 4
  66  G-9 IMG       17 DEC 07351  21:00:00   -90    5 4
  67  G-9 IMG       18 DEC 07352  00:00:00   -90    5 4
  68  G-9 IMG       18 DEC 07352  03:00:00   -90    5 4
  69  G-9 IMG       18 DEC 07352  06:00:00   -90    5 4
  70  G-9 IMG       18 DEC 07352  18:00:00   -90    5 4
  71  G-9 IMG       19 DEC 07353  03:00:00   -90    5 4
  72  G-9 IMG       19 DEC 07353  06:00:00   -90    5 4
  73  G-9 IMG       19 DEC 07353  09:00:00   -90    5 4
  74  G-9 IMG       21 DEC 07355  03:00:00   -90    5 4
  75  G-9 IMG       21 DEC 07355  09:00:00   -90    5 4
  76  G-9 IMG       21 DEC 07355  15:00:00   -90    5 4
  77  G-9 IMG       21 DEC 07355  21:00:00   -90    5 4
  78  G-9 IMG       22 DEC 07356  03:00:00   -90    5 4
  79  G-9 IMG       22 DEC 07356  09:00:00   -90    5 4
  80  G-9 IMG       22 DEC 07356  21:00:00   -90    5 4
  81  G-9 IMG       23 DEC 07357  03:00:00   -90    5 4
  82  G-9 IMG       23 DEC 07357  06:00:00   -90    5 4
  83  G-9 IMG       23 DEC 07357  09:00:00   -90    5 4
  84  G-9 IMG       23 DEC 07357  12:00:00   -90    5 4
  85  G-9 IMG       23 DEC 07357  15:00:00   -90    5 4
  86  G-9 IMG       24 DEC 07358  03:00:00   -90    5 4
  87  G-9 IMG       24 DEC 07358  09:00:00   -90    5 4
  88  G-9 IMG       24 DEC 07358  12:00:00   -90    5 4
  89  G-9 IMG       24 DEC 07358  15:00:00   -90    5 4
  90  G-9 IMG       24 DEC 07358  21:00:00   -90    5 4
  91  G-9 IMG       25 DEC 07359  00:00:00   -90    5 4
  92  G-9 IMG       25 DEC 07359  12:00:00   -90    5 4
  93  G-9 IMG       25 DEC 07359  15:00:00   -90    5 4
  94  G-9 IMG       25 DEC 07359  21:00:00   -90    5 4
  95  G-9 IMG       26 DEC 07360  03:00:00   -90    5 4
  96  G-9 IMG       26 DEC 07360  21:00:00   -90    5 4
  97  G-9 IMG       27 DEC 07361  06:00:00   -90    5 4
  98  G-9 IMG       27 DEC 07361  09:00:00   -90    5 4
  99  G-9 IMG       27 DEC 07361  15:00:00   -90    5 4
 100  G-9 IMG       27 DEC 07361  21:00:00   -90    5 4
 101  G-9 IMG       29 DEC 07363  03:00:00   -90    5 4
 102  G-9 IMG       29 DEC 07363  09:00:00   -90    5 4
 103  G-9 IMG       29 DEC 07363  12:00:00   -90    5 4
 104  G-9 IMG       29 DEC 07363  18:00:00   -90    5 4
 105  G-9 IMG       29 DEC 07363  21:00:00   -90    5 4
 106  G-9 IMG       30 DEC 07364  03:00:00   -90    5 4
 107  G-9 IMG       30 DEC 07364  09:00:00   -90    5 4
 108  G-9 IMG       30 DEC 07364  15:00:00   -90    5 4
 109  G-9 IMG       31 DEC 07365  00:00:00   -90    5 4
 110  G-9 IMG       31 DEC 07365  15:00:00   -90    5 4
 111  G-9 IMG        1 JAN 08001  03:00:00   -90    5 4
 112  G-9 IMG        2 JAN 08002  09:00:00   -90    5 4
 113  G-9 IMG        3 JAN 08003  00:00:00   -90    5 4
 114  G-9 IMG        4 JAN 08004  18:00:00   -90    5 4
 115  G-9 IMG        5 JAN 08005  03:00:00   -90    5 4
 116  G-9 IMG        5 JAN 08005  18:00:00   -90    5 4
 117  G-9 IMG        6 JAN 08006  03:00:00   -90    5 4
 118  G-9 IMG        7 JAN 08007  03:00:00   -90    5 4
 119  G-9 IMG        7 JAN 08007  12:00:00   -90    5 4
 120  G-9 IMG        8 JAN 08008  00:00:00   -90    5 4
 121  G-9 IMG        8 JAN 08008  09:00:00   -90    5 4
 122  G-9 IMG        8 JAN 08008  12:00:00   -90    5 4
 123  G-9 IMG        9 JAN 08009  03:00:00   -90    5 4
 124  G-9 IMG       10 JAN 08010  12:00:00   -90    5 4
 125  G-9 IMG       10 JAN 08010  15:00:00   -90    5 4
 126  G-9 IMG       10 JAN 08010  18:00:00   -90    5 4
 127  G-9 IMG       10 JAN 08010  21:00:00   -90    5 4
 128  G-9 IMG       11 JAN 08011  09:00:00   -90    5 4
 129  G-9 IMG       12 JAN 08012  15:00:00   -90    5 4
 130  G-9 IMG       13 JAN 08013  03:00:00   -90    5 4
 131  G-9 IMG       14 JAN 08014  03:00:00   -90    5 4
 132  G-9 IMG       14 JAN 08014  21:00:00   -90    5 4
 133  G-9 IMG       15 JAN 08015  03:00:00   -90    5 4
 134  G-9 IMG       15 JAN 08015  06:00:00   -90    5 4
 135  G-9 IMG       16 JAN 08016  09:00:00   -90    5 4
 136  G-9 IMG       16 JAN 08016  21:00:00   -90    5 4
 137  G-9 IMG       18 JAN 08018  09:00:00   -90    5 4
 138  G-9 IMG       18 JAN 08018  21:00:00   -90    5 4
 139  G-9 IMG       19 JAN 08019  03:00:00   -90    5 4
 140  G-9 IMG       19 JAN 08019  09:00:00   -90    5 4
 141  G-9 IMG       19 JAN 08019  21:00:00   -90    5 4
 142  G-9 IMG       20 JAN 08020  00:00:00   -90    5 4
 143  G-9 IMG       20 JAN 08020  21:00:00   -90    5 4
 144  G-9 IMG       21 JAN 08021  00:00:00   -90    5 4
 145  G-9 IMG       21 JAN 08021  12:00:00   -90    5 4
 146  G-9 IMG       22 JAN 08022  03:00:00   -90    5 4
 147  G-9 IMG       22 JAN 08022  18:00:00   -90    5 4
 148  G-9 IMG       23 JAN 08023  00:00:00   -90    5 4
 149  G-9 IMG       23 JAN 08023  03:00:00   -90    5 4
 150  G-9 IMG       23 JAN 08023  09:00:00   -90    5 4
 151  G-9 IMG       23 JAN 08023  15:00:00   -90    5 4
 152  G-9 IMG       24 JAN 08024  00:00:00   -90    5 4
 153  G-9 IMG       24 JAN 08024  15:00:00   -90    5 4
 154  G-9 IMG       25 JAN 08025  03:00:00   -90    5 4
 155  G-9 IMG       25 JAN 08025  12:00:00   -90    5 4
 156  G-9 IMG       25 JAN 08025  15:00:00   -90    5 4
 157  G-9 IMG       26 JAN 08026  09:00:00   -90    5 4
 158  G-9 IMG       26 JAN 08026  15:00:00   -90    5 4
 159  G-9 IMG       27 JAN 08027  03:00:00   -90    5 4
 160  G-9 IMG       27 JAN 08027  12:00:00   -90    5 4
 161  G-9 IMG       27 JAN 08027  15:00:00   -90    5 4
 162  G-9 IMG       27 JAN 08027  21:00:00   -90    5 4
 163  G-9 IMG       28 JAN 08028  03:00:00   -90    5 4
 164  G-9 IMG       28 JAN 08028  21:00:00   -90    5 4
 165  G-9 IMG       29 JAN 08029  06:00:00   -90    5 4
 166  G-9 IMG       29 JAN 08029  09:00:00   -90    5 4
 167  G-9 IMG       29 JAN 08029  12:00:00   -90    5 4
 168  G-9 IMG       29 JAN 08029  15:00:00   -90    5 4
 169  G-9 IMG       29 JAN 08029  21:00:00   -90    5 4
 170  G-9 IMG       30 JAN 08030  03:00:00   -90    5 4
 171  G-9 IMG       30 JAN 08030  15:00:00   -90    5 4
 172  G-9 IMG       30 JAN 08030  21:00:00   -90    5 4
 173  G-9 IMG       31 JAN 08031  09:00:00   -90    5 4
 174  G-9 IMG       31 JAN 08031  15:00:00   -90    5 4
 175  G-9 IMG       31 JAN 08031  21:00:00   -90    5 4
 176  G-9 IMG        1 FEB 08032  00:00:00   -90    5 4
 177  G-9 IMG        1 FEB 08032  09:00:00   -90    5 4
 178  G-9 IMG        1 FEB 08032  12:00:00   -90    5 4
 179  G-9 IMG        2 FEB 08033  03:00:00   -90    5 4
 180  G-9 IMG        2 FEB 08033  15:00:00   -90    5 4
 181  G-9 IMG        3 FEB 08034  03:00:00   -90    5 4
 182  G-9 IMG        3 FEB 08034  06:00:00   -90    5 4
 183  G-9 IMG        3 FEB 08034  15:00:00   -90    5 4
 184  G-9 IMG        3 FEB 08034  21:00:00   -90    5 4
 185  G-9 IMG        4 FEB 08035  03:00:00   -90    5 4
 186  G-9 IMG        4 FEB 08035  09:00:00   -90    5 4
 187  G-9 IMG        4 FEB 08035  15:00:00   -90    5 4
 188  G-9 IMG        4 FEB 08035  21:00:00   -90    5 4
 189  G-9 IMG        5 FEB 08036  03:00:00   -90    5 4
 190  G-9 IMG        5 FEB 08036  09:00:00   -90    5 4
 191  G-9 IMG        5 FEB 08036  15:00:00   -90    5 4
 192  G-9 IMG        6 FEB 08037  03:00:00   -90    5 4
 193  G-9 IMG        6 FEB 08037  09:00:00   -90    5 4
 194  G-9 IMG        6 FEB 08037  15:00:00   -90    5 4
 195  G-9 IMG        6 FEB 08037  18:00:00   -90    5 4
 196  G-9 IMG        6 FEB 08037  21:00:00   -90    5 4
IMGLIST: done


Next question: why are current Antarctic IR images not being received
and/or processed?

The 'pqact' action for processing these images looks correct:

~ldm/etc/pqact.conf_mcidasB
 ...
# UW Antarctic IR composite
UNIWISC ^pnga2area Q. (U1) (.*) (.*)_IMG (.*) (.*) (........) (....)
        PIPE    -close  util/ldmfile.sh
        /data/ldm/mcidas/images/sat/ANTARCTIC/\5/IR/\6/IR_\6_\7
 ...

Apparently, no UNIWISC Antarctic IR images have been received today?

While looking around to figure out why no Antarctic images have been
processed today, I noticed that there multiple 'pqact' exits.  Here
is one example of this indication from the LDM log file:

Feb 07 19:14:37 shu pqact[568] ERROR: Couldn't exec(xcd_run): No such file or 
directory 
Feb 07 19:14:37 shu pqact[19677] NOTE: Exiting 

I took a look at the McIDAS XCD execution script, xcd_run, to see if anything
looked amiss.  The only thing I found was that the location of the XCD log
file was specified incorrectly: it was set for /usr/local/ldm/logs when the
LDM is installed in /home/ldm on your system.  I changed the location in
~ldm/decoders/xcd_run and then restarted your LDM.  Now McIDAS XCD decoders
are running again.

While looking in the LDM log file for the reason that 'pqact's were exiting, I
noticed the following:

Feb 07 19:14:37 shu pqact[567] NOTE: Behind by 4664.91 s 

This tells us that your machine is 4664 seconds behind in processing products
out of your LDM queue.  A quick check to see the age of the oldest product
in your queue:

<as 'ldm'>
[ldm@shu ~]$ pqmon -l-
Feb 07 19:23:33 pqmon NOTE: Starting Up (3483)
Feb 07 19:23:33 pqmon NOTE: nprods nfree  nempty      nbytes  maxprods  maxfree 
 minempty    maxext  age
Feb 07 19:23:33 pqmon NOTE:  78177    97  165866   681958736    165662     1436 
    78477  17982616 4929
Feb 07 19:23:33 pqmon NOTE: Exiting

shows that your machine is extremely bound up in its processing: the age of the
oldest product is 4929 seconds, and your processing is 4664 seconds behind.  
This
is the reason for the missing products you reported previously!  Being bound up 
is
also one part of the reason that ADDE serving of data off of your machine is so 
slow;
the other part is that your datasets have a LOT of images in them, so it takes a
long time to index them for each ADDE image transaction!

As I surmised previously, your machine only has 1.5 GB of memory.  I also see 
that
your LDM queue is 1 GB in size.  The size of your queue in relation to the 
amount
of RAM you have is within the reasonable range.

The size of your queue in relation to the speed for which you can process the 
data
you are receiving, however, is not enough to process all of the data you are
receiving.  My recommendation, therefore, is to do some or all of the following:

- increase the amount of memory in your system
- split your data processing across two or more independent file systems
  (right now you are processing everything into the single file system that
  holds /data
- cut down on the volume of data

Adding memory should allow you to increase your LDM queue size.

Splitting the processing (writes) across two or more disks would help cut
down the I/O waits you are seeing (run 'top' for awhile and watch the high
I/O waits).

Cutting down on the volume of data you are ingesting would help to keep
your system from thrashing.

As a reminder, you are currently ingesting the following
IDD datastreams of model data:  all of HRS (via the UNIDATA compound feed:
UNIDATA==HRS|IDS|DDPLUS|UNIWISC), all of GEM, and some of CONDUIT.

As far as accessing imagery data using ADDE, I recommend that you continue
on the path of organizing images of a single type into daily directories
and then adjusting your ADDE dataset definitions to access the current
day's data for each image type.  This will result in much fewer images
being examined each time an ADDE request is made, so the waits should
drop dramatically.

Please let me know if you have questions on the things I found...

Cheers,

Tom
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Ticket Details
===================
Ticket ID: TTR-495389
Department: Support McIDAS
Priority: Normal
Status: Closed