Minimize pauses in printing when connected to a computer
I run almost all of my print jobs from my attached computer. I notice that I sometimes get short pauses of a few tenths of a second during a print, and it always leaves a blob where it stops. It's an old computer, and not the fastest, running Win 8.1 and recently 10. I try to make sure Repetier-host is the only app running and no network connection, but the OS is always doing something else and probably the cause of the pauses.
In looking at the firmware settings, I notice there is a buffer size setting that defaults to 16, and another that defaults to 10 which is the number of moves before the FW starts slowing things down. I assume the 16 is the number of moves that are available in the printer buffer. There is a statement that implies that the buffer can be increased to 32 (for mega 256 processors, I believe, which mine is).
Is this the right setting to change to make the printer less sensitive to slowdowns in USB data from the computer?
I've tried setting the buffer to 32, and leaving the minimum-moves size at 10, and everything still works, but I don't know if I have solved anything, or just haven't run any print jobs that stressed it.
Are there any downsides from increasing the buffer size?
Comments
Update:
Since raising the priority of Repetier Host in the OS and increasing the cache sizes in Repitier FW, the momentary pauses, and resulting blobs on the surface of prints that I used to see have all but been eliminated.
I raised the priority of Repetier Host to High in Win 10. This alone resulted in a significant improvement but system tasks would sometimes cause the cache of instructions to run out in areas where there were many small moves, resulting in very brief interruption.
The PrintLine Cache size in the firmware was increased from the default of 16 to 32, and also the Move Cache Low size was increased from 10 to 25.
With the computer I am using, it is possible that some combination of computer system activity and a high number of very short moves might still cause a pause, but for day-to-day routine print jobs, it is a non-issue. Printing from an SD card would always be wise if the best results were required.
The computer I use with the printer has an Athlon X2 64 5000+ dual core processor, 2 G of RAM, a mechanical HD, and USB 2.0