This is the mail archive of the newlib@sourceware.org mailing list for the newlib project.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Other format: | [Raw text] |
Hi I thought having something to compare to on an architecture with less than the densest code might provide some insight. The code is attached. Most RTEMS applications are statically linked including the RTOS services needed, libc services needed, BSP startup and shutdown, etc. I started with the Init() task only having a call to exit(0) and then progressively added calls so we could see what each added. - sparc v7 (erc32) at -O2 - start up, single task, exit(0) base: 66688 1408 7856 75952 128b0 o-optimize/time01.exe add start and end printf (constant strings): 73616 1408 7856 82880 143c0 o-optimize/time01.exe add call to time(): 75840 1408 7856 85104 14c70 o-optimize/time01.exe add gmtime call() 77888 1472 7856 87216 154b0 o-optimize/time01.exe add printf() to print MM/DD/YY HH::MM::SS 106720 1600 7856 116176 1c5d0 o-optimize/time01.exe I hope this provides a useful set of data. I am happy to tinker if you want to see other the impact of other methods or repeat this on other architectures. I can repeat this for 17 architectures but I hope we don't need to check them all. :) -- Joel Sherrill, Ph.D. Director of Research & Development joel.sherrill@OARcorp.com On-Line Applications Research Ask me about RTEMS: a free RTOS Huntsville AL 35805 Support Available (256) 722-9985
Attachment:
test.c
Description: Text document
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |