Ralphxyz wrote: ↑
Thu Apr 04, 2019 3:04 pm
Thanks for the replies/help.
Would USB SSD help?
Boot times are much slower from USB, but after that the higher IOPS of the SSD will help with some things. OS responsiveness and application load times will improve, and if the application does a lot of storage I/O (content creation, coding) that will be faster as well.
Nothing can really make up for the lack of RAM. If you're swapping due to lack of memory, the SSD may shorten how long the system hangs, but swapping will always drag system performance down. Note that the Pi SoC only has a single USB 2.0 interface, which shares bandwidth between the 4 USB ports and Ethernet (so if you use Ethernet, heavy swapping to USB could affect network performance as well).
The other problem is finding an SSD that works as a boot drive. The Raspberry Pi boot-loader is not compatible with all USB mass storage devices, and finding the right combination of SSD and USB-SATA adapter can be tricky.
I have a couple of Raspberry Pi computers running from SATA SSD with USB-SATA adapters. One is in an open-sided acrylic case with a normal 2.5-inch SATA SSD mounted on top
, connected to the Pi 3B with a USB3-SATA3 adapter cable. The other is a 3B+ in a Flirc Gen2 case that boots from a tiny mSATA form-factor SSD in an external USB 3.0 enclosure
If your storage needs are modest, I would recommend an A1 rated micro SD card, because small SSDs have less performance, and the SD card will just work. If you need 128GB or more, then an SSD makes more sense. They can be comparable in price (even less expensive in larger sizes), and should improve performance (except boot time). Just be aware that finding an SSD that works may require some trial and error.
The SanDisk Ultra A1 micro SD cards are usually pretty affordable and have worked very well for me. I have several Ultra A1 32GB cards in Pi systems, along with a couple of 16GB cards used mostly for testing, and one system with an Ultra Plus 64GB (my Minecraft SMP server).
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?