XSCHEM GRAPHICS PERFORMANCE CONSIDERATIONS
+
+For 2D graphic workloads software rendering on framebuffer device is the fastest option on almost all
+laptops i have tested xschem on. The only exception is the little Samsung N220 due to the slow
+and tiny Atom N450 CPU.
+Framebuffer graphics is also the most precise and reliable since the X11 specification
+has exact rules for pixelization/rasterizationof primitives.
+All drawings are thus exactly identical down to the pixels on any machine using fbdev.i
+Following table summarizes the test times for a xschem BIST routine, doing lot of
+graphic (among other) operations.
+
+HOST CPU GPU X11 Driver Test time [s] +======================================================================================================= +Asus F556U Intel core i7-7500U Intel HD 620 fbdev 19.8 -best- +Asus F556U Intel core i7-7500U Intel HD 620 modesetting 28.7 +Asus F556U Intel core i7-7500U Intel HD 620 intel 20.6 + +Samsung N220 Intel Atom N450 Integrated N450 fbdev 96.5 +Samsung N220 Intel Atom N450 Integrated N450 modesetting N/A +Samsung N220 Intel Atom N450 Integrated N450 intel 95.0 -best- + +Samsung R540 Intel Core i3 M 380 AMD/ATI Radeon HD 54xx fbdev 31.9 -best- +Samsung R540 Intel Core i3 M 380 AMD/ATI Radeon HD 54xx modesetting 64.3 +Samsung R540 Intel Core i3 M 380 AMD/ATI Radeon HD 54xx radeon 32.3 + +HP Pavilion DV6000 Intel Core Duo T5450 NVIDIA GeForce 8400M GS fbdev 41.5 -best- +HP Pavilion DV6000 Intel Core Duo T5450 NVIDIA GeForce 8400M GS modesetting 216.1 +HP Pavilion DV6000 Intel Core Duo T5450 NVIDIA GeForce 8400M GS nouveau 41.6 +
+
+ Following video shows the testing in action (OS: Devuan/testing, Arch: amd64):
+
+