×
INDI Library v1.8.1 Released (09 Sep 2019)

Monthly maintenance release INDI v1.8.1

Raspberry Pi 4 vs Pi 3 performance test

4 months 3 weeks ago
Ihoujin
Platinum Boarder
Platinum Boarder
Posts: 716
Karma: 3
More
Raspberry Pi 4 vs Pi 3 performance test #41005
Nice work. I was expecting better performance though. Is it possible the Pi 4 was being thermal throttled?

INDI/KStars on Raspberry Pi 4, 4gb
Raspbian Buster with AstroPi3 script configuration
Skywatcher HEQ5 Pro Mount
Canon 600D Camera
Orion SSAG/ASI120mm @280mm Guide Scope
PHD2
Adafruit Motor Hat shield
Adafruit GPS Module
Generic Bluetooth Joystick.
Startech 7 port powered USB Hub.

Please Log in or Create an account to join the conversation.

4 months 3 weeks ago 4 months 3 weeks ago by han.k.
han.k
Gold Boarder
Gold Boarder
Posts: 189
Karma: 5
More
Topic Author
Raspberry Pi 4 vs Pi 3 performance test #41015
I don't think the Pi 4 was throttled. This setup was all local in the Pi 3 and Pi 4. No download or INDI communication via the network

For local saving, the memory card has a significant influence. A class 10 can do 10 mbit/second. So the normal sequence is something like:

1) start exposure
2) download result from camera
3) save result
4) start next exposure

Patrick is already working on a improved CCDCiel version where step 3) and 4) are run in parallel. So a multitask operation. This would reduce the lost time (between exposures) to the image transfer time from camera to memory only. First indications are that the lost time will be half or less.

This are the values for my desktop under win7:

win7 desktop, 4635 x 3520 image, lost time between images 9.3 sec
win7 desktop, 2328 x 1760 image, lost time between images 3.3 sec

So the Pi4 is faster then my old desktop!

An alpha version of CCDCiel indicates that the 9.3 sec could reduce to 3.6 seconds and 3.3 seconds to 1.3 seconds. The same improvement could apply for the Pi 4, but it is early in the development.
The following user(s) said Thank You lemmu

Please Log in or Create an account to join the conversation.

4 months 3 weeks ago 4 months 3 weeks ago by kaydubbed.
kaydubbed
Senior Boarder
Senior Boarder
Posts: 41
More
Raspberry Pi 4 vs Pi 3 performance test #41143
Deleted for duplicate

Please Log in or Create an account to join the conversation.

4 months 3 weeks ago
kaydubbed
Senior Boarder
Senior Boarder
Posts: 41
More
Raspberry Pi 4 vs Pi 3 performance test #41144
Might I suggest using a fast USB3 flash instead of the boot SD card? I have a 400mbs read/write flash, which is about 4x faster than class 10 SD cards.

Please Log in or Create an account to join the conversation.

4 months 3 weeks ago
stash
Platinum Boarder
Platinum Boarder
Posts: 325
Karma: 4
More
Raspberry Pi 4 vs Pi 3 performance test #41148
Raspbian Buster on RPI4 will not, at his time, boot from USB - www.raspberrypi.org/forums/viewtopic.php?t=243629

RPI3 Ubuntu 16.04 / AMD desktop Kstars under Ubuntu 16.04 Mounts :azeq6 ,SWAZGoTo

RPI3 Fedora testing out on AMD desktop Fedpra 28 - running kstars 2.9.4 , Indilib 1.7.4 ?????

Please Log in or Create an account to join the conversation.

4 months 3 weeks ago
kaydubbed
Senior Boarder
Senior Boarder
Posts: 41
More
Raspberry Pi 4 vs Pi 3 performance test #41150
Sorry I meant using a flash for writing and reading images instead of the SD.

Please Log in or Create an account to join the conversation.

4 months 3 weeks ago
han.k
Gold Boarder
Gold Boarder
Posts: 189
Karma: 5
More
Topic Author
Raspberry Pi 4 vs Pi 3 performance test #41152
First I tried a ram disk in memory, but that not helped a lot. Selecting in the driver option save to ram disk (SD card) rather then via INDI network communication helped a little.

But in the latest alpha version of CCDCiel the problem is solved and only the download speed from the camera to RAM is relevant (USB 3). Saving is done while the next exposure is running. The lost time between exposure is half of the previous values or less. This improvement will be beneficial for all CCDCiel releases. At the moment I can only test on the Pi 3 since my Pi 4 is broken.

Please Log in or Create an account to join the conversation.

4 months 3 weeks ago
kaydubbed
Senior Boarder
Senior Boarder
Posts: 41
More
Raspberry Pi 4 vs Pi 3 performance test #41154
Dang! Now you have me a bit paranoid. I am going to start on mine tonight to make sure mine isn't DOA.

Please Log in or Create an account to join the conversation.

1 month 3 weeks ago
Acapulco Rolf
Senior Boarder
Senior Boarder
Posts: 45
Karma: 2
More
Raspberry Pi 4 vs Pi 3 performance test #44644
Wow

I ran the ASTAP app on a Raspberry Pi 4/4Gb
I know ASTAP is fast but this is nuts

ASTAP solved my DSLR fits files of M31 in 2.8 seconds


Really would like to have this as an alternate solver in ekos...

ASTAP running on a Raspberry Pi 4 4GB solving a 180 second sub of M31 taken with a Canon 600D DSLR
Attachments:

Please Log in or Create an account to join the conversation.

1 month 3 weeks ago
knro
Administrator
Administrator
Posts: 7411
Karma: 51
Raspberry Pi 4 vs Pi 3 performance test #44646
I will look into it... if someone from the community can work on adding ekos support for that it would be great.

Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?
Add your observatory info
The following user(s) said Thank You Acapulco Rolf

Please Log in or Create an account to join the conversation.

1 month 3 weeks ago
knro
Administrator
Administrator
Posts: 7411
Karma: 51
Raspberry Pi 4 vs Pi 3 performance test #44649
Alright, I'm quite impressed with ASTAP after trying it for the last hour. We already worked with Han before to get INDI support into HNSKY so I know he's pretty smart, but this is on another level!

Anyone up for adding this to Ekos alignment? It's not as complex as astrometry.net so it should be fairly straight forward to add it as an alternative solver.

Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?
Add your observatory info

Please Log in or Create an account to join the conversation.

1 month 3 weeks ago
han.k
Gold Boarder
Gold Boarder
Posts: 189
Karma: 5
More
Topic Author
Raspberry Pi 4 vs Pi 3 performance test #44650
The ASTAP commandline is specified here:

www.hnsky.org/astap.htm#astap_command_line

Han
The following user(s) said Thank You knro, El Corazon

Please Log in or Create an account to join the conversation.

Time to create page: 20.410 seconds