[asterisk-users] Multicore process

[Setta Punpeng]

Hi all,

I have asterisk 1.4 installed on 2 Dual Core processors (total = 4  
cores) + CentOS5.0 x64 + 3 E1 PRI and 80 sip extension. Sometime the  
system seems to slow down during peak hours. I check with 'sar' and  
see that CPU0 has highest load while the other CPUs has very low  
loads. Since asterisk uses thread, CPU load should be shared among  
CPU? or do I need to have special setting?


11:30:01 AM       CPU     %user     %nice   %system   %iowait     
%steal     %idle
11:40:01 AM       all      1.13      0.00     10.96      0.01       
0.00     87.90
11:40:01 AM         0      1.86      0.00     41.18      0.00       
0.00     56.95
11:40:01 AM         1      0.47      0.00      0.18      0.00       
0.00     99.36
11:40:01 AM         2      1.41      0.00      1.97      0.02       
0.00     96.59
11:40:01 AM         3      0.78      0.00      0.55      0.01       
0.00     98.67
11:50:01 AM       all      0.99      0.00     10.02      0.01       
0.00     88.98
11:50:01 AM         0      1.92      0.00     38.14      0.00       
0.00     59.94
11:50:01 AM         1      0.34      0.00      0.15      0.00       
0.00     99.52
11:50:01 AM         2      1.06      0.00      1.47      0.02       
0.00     97.46
11:50:01 AM         3      0.66      0.00      0.41      0.01       
0.00     98.93
12:00:01 PM       all      0.83      0.00      8.46      0.01       
0.00     90.70
12:00:01 PM         0      1.91      0.00     32.68      0.00       
0.00     65.41
12:00:01 PM         1      0.30      0.00      0.14      0.00       
0.00     99.55
12:00:01 PM         2      0.63      0.00      0.75      0.01       
0.00     98.60
12:00:01 PM         3      0.50      0.00      0.34      0.01       
0.00     99.15
12:10:01 PM       all      1.04      0.00      7.48      0.02       
0.00     91.46
12:10:01 PM         0      1.88      0.00     29.15      0.00       
0.00     68.97
12:10:01 PM         1      0.77      0.00      0.10      0.00       
0.00     99.12
12:10:01 PM         2      0.39      0.00      0.44      0.05       
0.00     99.13
12:10:01 PM         3      1.13      0.00      0.32      0.01       
0.00     98.54
Average:          all      0.40      0.00      4.34      0.00       
0.00     95.26


Best regards,

Setta
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