[mapserver-users] MapServer webgis used too little capacity bandwidth

[Alphatran]

Andy Colson wrote:
> 
> 
> First, I think we need to find the bottleneck.
> 
> a) If there is only one client, requesting one map, then you will not 
> have enough data going over the line to use 200Mbps.
> 
> b) If you have lots of clients, all requesting lots of maps, then you'll 
> have enough data going over the line to use 200Mbps.
> 
> Assuming b is true, then we need to see if you are cpu bound or io 
> bound.  On you linux box watch "vmstat 5" for a while (you could even 
> post the results if you want).
> 
> The last column "wa" is %cpu wait time for the hard drve.  If that's 
> high then you're io bound.
> 
> Next column in is "id", or %cpu idle time.  If that's near zero then you 
> are cpu bound.
> 
> -Andy
> 
> 

Thanks Andy,

I have just tested with 2 clients. There is one map with many layers. These
lines are result of "vmstat 5" command, please help me!

[root at gis ~]# vmstat 5
procs -----------memory---------- ---swap-- -----io---- --system--
-----cpu------
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id
wa st
 0  0  31368  14268  11100 1450188    1    2   428    46   53   66  2  0 96 
2  0
 0  0  31368  14396  11108 1450188    0    0     0    17  184  197  0  0 100 
0  0
 0  0  31368  14388  11116 1450188    0    0     0    22  167  197  0  0 100 
0  0
 0  0  31368  14468  11124 1450188    0    0     0    12  182  202  0  0 100 
0  0
 0  0  31368  14468  11124 1450188    0    0     0    20  165  196  0  0 100 
0  0
 0  0  31368  14556  11132 1450208    0    0     2    32  178  211  0  0 100 
0  0
 0  0  31368  14548  11140 1450208    0    0     0    18  199  242  0  0 100 
0  0
 0  0  31368  14628  11148 1450208    0    0     0    35  199  249  0  0 99 
0  0
 0  1  31368  14620  11184 1450180    0    0    14    49  185  224  0  0 100 
0  0
 0  0  31360  13172  11224 1451468    2    0   247    30  242  250  4  0 94 
2  0
 0  0  31360  13116  11232 1451460    0    0    10    23  235  200  0  0 100 
0  0
 0  0  31360  13056  11232 1451668    0    0    13    52  219  214  4  0 96 
0  0
 0  0  31360  10640  11240 1451708    0    0    19    18  245  292  0  0 100 
0  0
 0  0  31360  12480  11248 1449324    0    0    26    63  259  304  0  0 100 
0  0
 0  0  31360  12424  11256 1449468    0    0    29    50  235  214  0  0 100 
0  0
 0  0  31360  12424  11264 1449508    0    0     2    57  209  207  0  0 100 
0  0
 0  0  31360  13096  11272 1446980    0    0     3    61  281  378  0  1 99 
0  0
 0  0  31360  26100  11380 1433788    0    0    71    75  371  376  4  1 93 
1  0
 1  0  31360  26900  11396 1433952    0    0    26    88  346  304  4  1 94 
1  0
 0  0  31360  26160  11420 1434068    0    0    32    78  422  398  5  2 92 
1  0
 0  0  31360  25572  11432 1434204    0    0    22   106  374  331  5  1 93 
1  0
 0  0  31360  24916  11444 1434240    0    0     3    67  184  249  0  0 100 
0  0
 0  0  31360  24984  11452 1434252    0    0     2    54  197  231  0  0 100 
0  0
 0  0  31360  28252  11460 1434304    0    0    10    76  226  250  0  1 98 
0  0
 0  0  31360  26764  11468 1434320    0    0     6    46  213  257  4  1 95 
0  0

-- 
View this message in context: http://n2.nabble.com/MapServer-webgis-used-too-little-capacity-bandwidth-tp3404699p3405085.html
Sent from the Mapserver - User mailing list archive at Nabble.com.