Performance Testing Tools

Sometimes we might want to perform the same action multiple times with different parameters. The following is a basic example of how to do this in LoadRunner. In this example we have three different Parameters {Param_1}, {Param_2} and {Param_3} as shown. The following script will perform three searches on google.co.in using above three different parameters. Action() {             int i;             char temp[10];             // Progress Through 3 Parameters stored in {Param_1}, {Param_2} and {Param_3}             for(i=1;i<4;i++) {             //stores the output like {Param_1} to variable temp                         sprintf(temp,"{Param_%d}",i ); //To print the value of temp lr_message("print %s",temp ); //Evaluate the temp and store the value in Param_value                         lr_save_string(lr_eval_string(temp), "Param_value");                         lr_start_transaction("Se

vmstat : vmstat is a tool in Unix/Linux which is used to Report virtual memory statistics. It shows how much virtual memory there is, how much is free and paging activity. Most important, you can observe page-ins and page-outs as they happen.   vmstat   reports   information about processes, memory, paging, block IO, traps, and cpu activity.   > vmstat 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   21688 12797396 850716 15372668     0     0      3     35     0     0   1   0 99   0   0   0   0   21688 12789292 850716 15372668     0     0      0   1355   883   744   1   0 99   0   0   1   0   21688 12784648 850716 15372676     0     0      0     15 1934 1292   6   0 93   0   0   2   0   21688 12781356 850716 15372736     0     0      0     16 2222 2094   8   1 92   0   0   0   0   21688 12809992 850716 15376880     0