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10-12-2016 08:24 AM
10-12-2016 08:24 AM
TruCluster and Standalone system I/O performance
Hello ,
Does Anyone know the difference, esp. in performance, between the AdvFS in standalone system and in TruCluster environment?
We run the same program on a standalone system and single node TruCluster system(created from the standalone sytem). The performance differed much as following:
(1) the main program:
#include <fstream>
#include <stdio.h>
#include <iostream>
using namespace std;
int main(int argc,char **argv)
{
ofstream outfile(argv[1]);
int loonu ;
for ( loonu = 0; loonu != 1000000; loonu++ )
{
outfile << " " << loonu << " All of the output is going here-------------------------------" <<endl;
}
int ret;
return 0;
}
(2) the result on standalone system:
# time ./main new.txt
real 0m11.58s
user 0m3.13s
sys 0m8.43s
(3) the result on singel node cluster system:
# time ./main new.txt
real 0m26.08s
user 0m3.58s
sys 0m22.46s
Thanks for your reply.