[blackmore90]

Hi Andrew,
Here is the make and model of my server:

SuperMicro SuperServer 6028UX-TR4

Thank you.

[blackmore90]

Hi Andrew, sorry for the very late response
Actually, I have tried the above steps but none of them did work for me. I still get random idle issue while working with the device.

Thank you,
Serhat

• This reply was modified 8 years, 9 months ago by blackmore90.

[blackmore90]

Andrew thank you very much, i have placed a sleep for 1 seconds and now the load is reduced to 6% on i7 and 30% on atom on average, significant downgrade.

[blackmore90]

Update: I have run the project and the test applications on a laptop with intel atom cpu. It starts with 90% load and decreases gradually with time. About 10 minutes later it drops to about 30% but i get sweep data with very high latency after that time. Seems like Atom CPU cannot process the sweep data fast enough.

[blackmore90]

Thank you very much for your fast response Andrew.

I have decided to minimize the test complexity to eliminate potential effects of other sub-projects. I have created the following very simple CPP code:

#include <iostream>
#include “bb_api.h”

int main()
{
int handle = 0;
bbStatus openStatus = bbOpenDevice(&handle);
bbConfigureAcquisition(handle, BB_AVERAGE, BB_LOG_SCALE);
bbConfigureCenterSpan(handle, 3.000005e9, 5.999991e9);
bbConfigureLevel(handle, -30, BB_AUTO_ATTEN);
bbConfigureGain(handle, BB_AUTO_GAIN);
bbConfigureSweepCoupling(handle, 5e3, 5e3, 1e-3, BB_RBW_SHAPE_FLATTOP, BB_NO_SPUR_REJECT);
bbConfigureProcUnits(handle, BB_POWER);
bbStatus initStatus = bbInitiate(handle, BB_SWEEPING, 0);
unsigned int sweepsize;
double binsize, startfreq;
bbQueryTraceInfo(handle, &sweepsize, &binsize, &startfreq);
float *min_swp = new float[sweepsize];
float *max_swp = new float[sweepsize];
for(int i = 0; i<1e6; i++){
bbStatus swpStatus = bbFetchTrace_32f(handle, sweepsize, min_swp, max_swp);
}
return 0;
}

It results in about 18% CPU usage on my ASUS laptop. The system has i7-4700hq CPU, 16GB of RAM and the BB60C is connected to USB 3.0 port. Configuration is x64. This code uses about 8 threads and I have attached the thread display if you would like to check.

Actually, I am planning to port the code to another computer which will have Intel Atom series processor. My project will likely result in a huge CPU load on that PC.

Does that test really make sense in roughly measuring the CPU load?

Thank you.

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[blackmore90]

Thank you very much Andrew, now i can get the correct timestamp values.

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