Recommended PC processor capacity

Mike Peron

Couldn’t find anything recently published in the archives so here goes. I finally have my new Flex 6600M and SmartSDR properly connected with SliceMaster, CWSkimmer, HRD DM780 and HRD Logbook. Running it all on a 2015 HP Spectre x360 laptop (8 GB RAM and 500 GB SSM) with an Intel i7-5500U processor running at 2.4 GHz (it’s Passmark score is 3,980 per this site- https://m.cpubenchmark.net/). Problem is that when running all this software along with DXHeat and QRZ.com, DM780 is very sluggish (even after setting a slower waterfall speed) and CWSkimmer cuts in and out. Checking Task Manager I discovered processor utilization averages around 70% peaking over 90% which is likely my problem. This suggests I need a higher performance PC. Not sure yet if I would do another laptop or a desktop but am open to any suggestions. HDD space utilization is quite modest since this PC will be dedicated to Ham Radio so 1TB HDD is probably fine (perhaps even 500GB SSD). Question: what type of processor and how much RAM is recommended for all this multi-tasking software ? Thanks and best 73, Mike WB6UTW

Neal_K3NC

bahillen

First thing to do is add more RAM. 16 is a minimum. If you can add more do it. Your processor is spending too much time swapping data to disk. I upgraded to 16 Gb and CPU use dropped significantly. Bill

Joe N3HEE

Mike Peron

Per HP specs it’s a: Intel HD graphics 5500

Steve K9ZW

Jerry W4UK

I suspect you are being hindered by some of the windows stuff that runs (unnecessarily, I think) in the background. I have monitored taskmanager while SSDR et al are running and find that most of my I7 processor is being used by processes that I don't understand. Sure would be nice if a Win 10 expert here would have a look and let us know what we can safely disable on a SSDR-dedicated machine.

Jerry W4UK

Mike Peron

According the Best Buy Geek Squad, it’s a chip on the motherboard and not a separate graphics card since it’s a very thin laptop

Mike Peron

Bill, that’s a great idea. So I looked at two Task Manager screen shots I took over the weekend. While the “CPU” usage tab was showing between 85 and 88%, the “Memory” (RAM) was showing 49 and 47% and the “Disk” activity tab was at 1 and 3 % respectively. The Best Buy Geek Squad says the latter two are reasonable numbers but that the CPU should be well under 50 %. I need to bring in my laptop to see if I can expand the RAM but these numbers suggest I’m OK. Your thoughts? Thanks

Mike Peron

Thanks Joe for the details. There is a Mom and Pop computer store in town I’ll visit and show him your post. Appreciate your response and recommendations

bahillen

Strange behavior with my RAM at least to me, I had 8 G of RAM and it was always at 50% roughly utilized, thought no problem. BUT if you look closely at the graph in Task Manager there is a fine line that extends to about twice the shaded bar. That is RAM that has was is not being used but was recently used and can be used again soon. So really it amounts to 100%. Others could explain it better. It is called Standby or cache memory, data and code that is not currently in use. When I put in the additional 8 Gb of memory as recommended by Tim from help desk, the used RAM went up to 6-7 Gb. The CPU usage dropped significantly and I didn’t get near as many interrupt problems. I currently have 16 Gb of RAM and wish I had 24Gb for safety. My machine is a Dell 3668 I7-7700 processor SSD with NVDIA 1050 graphics card. Important to get monitor graphics off your computers CPU. My CPU runs about 40_50%. Now at 47% jumping to 70% peak during decoding and Microsoft overhead processes once minute or so. My Ethernet is currently at 10.3 Mbps. Not Remote. Flex 6600 4 panadapters, two IQ Streams, 3 FT8 instanced and one CW Skimmer instanced. SmartSDR, Three displays one of which is a 4K monitor. No spots turned on. As I found I wanted to do more and more I had to work on computing and network performance. I have to keep an eye on each process to control resources. I have a picture of my recent operating position. Looked a lot like other as opposed to my original picture with my NCX-5 from 1960. 73 Bill W9JJB

bahillen

Sorry look at QRZ.com for my shack pictures. W9JJB

Mike Peron

Thanks for the insight. BTW, nice looking Station Bill. Off topic.....I retired from Northrop Grumman and used to work next door to you in Rolling Meadows on Hicks Rd. Instead of an NCX-5, I opted for the Hallicrafters SR-150 to restore. The last SR-400A’s were actually built on Hicks Rd. Check out my QRZ page photo. In fondly recall driving by the Motorola campus on the drive home to Algonquin for 7 years.

Mike Peron

Bill, Appreciate your keen observations and recommendations. I’ll check out that “fine line” that extends beyond the shaded bar. Probably expecting too much from this small i7-5500 laptop. I bought it mainly for travel back in 2015 ($1500) and never had any intent to be running all this Ham software on it

bahillen

Mike Your i7 laptop is fine, but maybe not to run a remote location if you are all in. I use an old Dell laptop with an I5 processor and will only accept 8 Gb of RAM. Talking to a computer enthusiast at Micro Center was informed that various computer boards are configured differently for cost and marketing reasons. My laptop uses onboard video drivers that uses a lot of CPU with an external 1040 HD monitor. But makes a good unit for traveling. I keep and run non communications things off my radio computer. Email and web surfing stays on the laptop. I don’t want a virus to mess up my amateur activities. Chrome can use a lot of resources but I do use Chrome to download software. You have to work with what you have (until Christmas)

Craig Williams

I Google each windows process running to find out what they are and can I do something to make them use less resources. Do Ctrl-Alt-Del and select Task Manager to see the processes running. ( wish I had made a list of what I found..)

Oxford English

Larry Benoit

Mike Peron

Thanks everyone for your great inputs and ideas. I forgot to mention that I’m not running remote. I’ll have to explore the service application usage further. A quick glance at my CPU usage over last weekend with the CPU running around 80% showed nothing significant being used by MS misc service or overhead items. I will run Win Resource Monitor with everything running then take some screen shots and try to eliminate what I don’t need. Best 73, Mike WB6UTW

Michael Coslo

I agree on something being a hog, no way an i7 should be brought to it's knees. I have a Insignia 10 inch Windows tablet/laptop combo - forget what the processor is but it was a dirt cheap W10 bottom feeder I use when I don't want to worry about losing. So I tried SSDR, WSJT, fldigi, N1MM, and MRP40. Runs everything FB

Mike Peron

Thanks for your reply. Next time you run all this software together can you report on your Task Manager’s reported CPU, Memory and Disk utilization numbers? It would be a great comparative data point. 73, Mike

Dave - N6XVZ

Bill English

You were given good advice here, while ram is very important, in my experience, my SSD made a huge improvement in performance. The processor can only process data as fast as it gets it, increase the throughput, you will see the results in performance. If you can get a solid state drive, the prices have been dropping, it is well worth all the expense and effort. 

Mike Peron

Dave, thanks for your reply. Il have to go look for Tim’s post. To answer your question I’m using Win 10

Mike Peron

Bill, I failed to mention that my HP laptop has a 500GB SSD. I really love it as I’ve never owned a PC that boots in 30 seconds ! Thanks for your reply. Gonna go see if Best Buy can add another 8GB of RAM

Mike-VA3MW

Mike, I would go out and pick up a better video card.  One with a big fan on it.  Adding more video power will really help.  CW Skimmer is a big resource hog and this will help.

Oppss.. I just reread and saw this is a laptop and the buss performance can be questionable.   Laptops don't have on board video, so they will share the onboard RAM as well.   

You might want to see if the same things happen without Skimmer running since it renders in the CPU and not video card.  Then can overtax the CPU.  Anytime the the CPU on a Windows computer hits 80% you have pretty much maxed out.  It is different in the Linux work.

It is possible to offload some of the above items to different computers.  Move Skimmer to another computer and have it share it's data with the other computers.  Long gone are the days that you have to have all this on 1 computer.

In discussing this with our engineering team, they thought that if you move Skimmer you may see a big improvement.

Mike

Mike Peron

Brilliant idea, Mike!!. I’ve got an older lapto collecting dust. Having another display would also help expand my now crowded views. Many thanks for the great tip!!

Mike Peron

Thinking about this a little deeper, I believe CWSkimmer needs I/Q data to function as opposed to DAX audio. In either case will I also need to load SmartSDR on the second laptop but only open the DAX and CAT Control Panels? I’d still like to use the powerful Search and Pounce feature of CWS but it will need to control the radio’s frequency especially while operating split. Any insight would be greatly appreciated. Thanks in advance and best 73

Mike-VA3MW

Correct!  Just install SmartSDR on the other computer so that it installs SmartSDR CAT and DAX.   Start up DAX and CAT and they will connect to the radio and have Skimmer connect.

You will have to use a 2nd mouse, but it will send the required commands to the radio.  

Using SliceMaster will help with the Skimmer setup as well.

Welcome to the Flex world of distributing your workload.  Unlike every other HF radio you are not tied to 1 RS232 port.

Cool, eh?  (I can say that since I am from the Great White North).

Mike

Vox Deus

I'll hook it up again some time and take a look.

Mike Peron

The Geek Squad at Best Buy opened the back cover of my laptop and showed me the 8GB of RAM that was soldered in to the motherboard. There were no expansion slot to add more RAM