Given your recent questions about meshes I suspect the commands in your undo list have more mesh updates than you’ve previously needed, and meshes take up a lot of storage.
As Jeremy suggested increase the amount of memory available for Undo.
(Corrected) Each time a command is executed Rhino stores the affected geometry as it was before the command. Undo restores the previous geometry. (It does not do a reverse calculation.) Once the memory limit is reached the oldest stored geometry is flushed.
I believe this is actually the max number of recent commands that appear in the popup you get when you right click in the command line, and is independent of the number of items in the Undo list.
Please don’t do this - you will run your machine out of memory- leave it at 1. The memory limit should be used - the minimum number of undos has been removed in later Rhinos.
Um…limit list to 20 commands was there by default, you say make it 1, but is this anything to do with undoes, as I have seen more than 20 normally anyway.
as I say wording is deceiving if thats the max number of commands listed in undo. It doesnt really say so, nothing there in that panel that says the max number of undoes it can show, or is there.
is that 20 (see my print screen above) to do with undo or something else, like the area above the command line ?
it doesnt say clearly what its about.
Is 80 in that ok, or must i reduce the default 20 to 1 ?
Its called most recently used pop up menu, was 20, you say make it 1… need verify the number I refer to and set to 80 is understood.
@Steve1 I was mistaken and Jeremy corrected me. If by “the upper number” you mean the number in “Limit list to __ commands” then it is not connected to Undo but is the number of commands shown in command line history. So it is okay to leave it at 20 or make it 80.
@pascal I caused some confusion. I think Steve changed the number of lines in command line history, not Undo.
These days with “average” machines having 16Gb of RAM and higher-performance ones having 32Gb or more, one should have no trouble assigning 1Gb or more of RAM to Rhino’s undo - i.e. setting it to 1024 or even 2048.
Note also: The ‘Min number of undos’ setting that was present up to V5 was actually removed from V6 and later, so memory allocation is the only setting now.
Hi,
I will leave the 'Limit List number at the top of the panel to 20, as was default. and that was as I suspected to with the command line area.
memory as I have 32Gb DDR RAM I will up that, and I will leave the Min number of undos as it is, 1.
