BETA 02e suprised by high CPU usage

[andy-w-h]

Having got the BULB mode working with my D5300, tonight is the first night the clouds have lifted so as dusk approaches I thought I take some 600s darks.  I'm not sure  I understand why BYN is pulling around 50% CPU usage on a dual core @2.4GHz whilst seemingly doing nothing for 10 minutes (i.e. after the image transfer has completed).

 

So what is BYN upto?  A CPU core almost fully used seems a lot just to do some timing and display 1 to 600 !

 

Andy

[admin]

Having got the BULB mode working with my D5300, tonight is the first night the clouds have lifted so as dusk approaches I thought I take some 600s darks.  I'm not sure  I understand why BYN is pulling around 50% CPU usage on a dual core @2.4GHz whilst seemingly doing nothing for 10 minutes (i.e. after the image transfer has completed).

 

So what is BYN upto?  A CPU core almost fully used seems a lot just to do some timing and display 1 to 600 !

 

Andy

 

Hi Andy,

 

Are you sure it is BYN?

 

You will get a peek of 5 to 15 seconds after an image download because I need to load the image, build the histogram, read exif data, display the image, etc. 

 

When no images are in the queue for processing, and that should be the case with 600 seconds shots BYN should be idling. It is on my computers.

 

Anyone else seen this?  I'm not seeing any evidence at my end.

 

Regards,

[admin]

Actually, let me check a few things.

 

I'll post back my findings.

 

Regards,

[admin]

Holly crap!  Found it!

 

It was a 1 millisecond error, but it had a 100% cpu usage side effect.  I had a loop timer with no sleep time between iterations; added a 1 millisecond wait and all it fine now.  Rookie mistake on my part <_>

 

It is fixed now and will be in the next release.

 

Thank you so much to reporting this, these errors are small in terms of coding but huge in terms of impact.

 

Do you want an interim build with the fix for testing?

 

Regards,

[andy-w-h]

Guylain,

 

I would love to try an interim build if possible .. saves my CPU fan doing a helicopter impression if nothing else

 

I have a question about the weather temperhum stuff but will raise that as another thread to stay on topic.

[admin]

Guylain,

 

I would love to try an interim build if possible .. saves my CPU fan doing a helicopter impression if nothing else

 

I have a question about the weather temperhum stuff but will raise that as another thread to stay on topic.

 

Ok, I'll post BETA 02f later today with the fix.

 

Thanks,