Vincent Lefevre <[EMAIL PROTECTED]> wrote: > On 2007-05-16 15:59:10 -0500, cothrige wrote: >> I have installed xterm via apt, running etch, and have noticed that it >> scrolls really slowly. I compared it to rxvt by running `time ls` in >> /usr/bin with rxvt taking 0.572s and xterm running at 4.633s. Earlier
given those times, it sounds like the XCopyArea issue. >> it was even worse taking over 10 seconds. It is a very big difference >> in usage, and if I am compiling something it can have very significant >> impact. >> >> Has anybody else had this experience? > xterm has always been very fast here. It depends. There are several issues. For normal/small scrollback sizes, the dominant one is that the XCopyArea function performs far worse on a local connection than on a remote connection. That's a defect in the X libraries (there's no excuse for a _local_ connection to run 15 times slower than the same code running remotely). rxvt happens to not use this defective function (actually it's ifdef'd in the code with a misleading comment regarding the issue). For "large" scrollbacks, e.g., more than 10,000 lines, xterm has its own problems. -- Thomas E. Dickey http://invisible-island.net ftp://invisible-island.net -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
