Experimental Physics and
Industrial Control System

Bernhard Kuner <[email protected]> · Thu, 05 Oct 2000 12:18:04 +0200

I work also on a server using cas and discovered the same problem - a
get from a cas based server will last extremly long. So I followed
jeff's suggestion to fix the times with the catime program. This is the
result:

Result of "catime" for the channels:

	    |"D_REC" - cas                          | "BIPOPSP1S4G:rdbk" -
IOC            | Faktor:
--------------------------------------------------------------------------------------------------
Test        |Elapsed Per Item   Items per sec       | Elapsed Per Item 
Items per sec     | IOC/cas
--------------------------------------------------------------------------------------------------
search      |0,00123230 sec;      811,5; 0,1 Mbps   | 0,00036710 sec;   
2724,1; 0,5 Mbps |  3,36  
pend event  |0,00004800 sec;    20833,3;            | 0,00004800 sec;  
20833,3;          |  1     
float       |                                      
|                                     |        
async put   |0,00012186 sec;     8206,1; 1,1 Mbps   | 0,00007314 sec;  
13672,4; 1,9 Mbps |  1,67  
async get   |0,00008211 sec;    12178,8; 1,7 Mbps   | 0,00009105 sec;  
10983,0; 1,5 Mbps |  0,9   
synch get   |0,10013000 sec;       10,0; 0,0 Mbps   | 0,00135000
sec;     740,7; 0,1 Mbps |  74,07 
string      |               ;           ;           |              
;                     |        
async put   |0,00013968 sec;     7159,2; 1,2 Mbps   | 0,00009733 sec;  
10274,3; 1,7 Mbps |  1,44  
async get   |0,00008362 sec;    11958,9; 2,0 Mbps   | 0,00013683 sec;   
7308,3; 1,2 Mbps |  0,61  
synch get   |0,10012000 sec;       10,0; 0,0 Mbps   | 0,00141000
sec;     709,2; 0,1 Mbps |  70,92 
integer     |               ;           ;           |              
;                     |        
async put   |0,00014669 sec;     6817,1; 0,9 Mbps   | 0,00007738 sec;  
12923,2; 1,8 Mbps |  1,9   
async get   |0,00007411 sec;    13493,5; 1,8 Mbps   | 0,00009139 sec;  
10942,1; 1,5 Mbps |  0,81  
synch get   |0,10012000 sec;       10,0; 0,0 Mbps   | 0,00145000
sec;     689,7; 0,1 Mbps |  68,97 
free        |0,00007560 sec;    13227,5; 1,8 Mbps   | 0,00009150 sec;  
10929,0; 1,5 Mbps |  0,83  

we see that all 'sync get' is 70 times more slow on the cas-server. Hy
jeff, what's that?

Bernhard Kuner

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System