Hi Denys Some debuggers will constantly monitor/watch memory etc which can slow down the execution and be very intrusive. If this is happening then that will cause problems. I would google for issues relating to slow debugger activity with that debugger. Good luck there. Charles On Tue, May 4, 2021 at 7:28 PM Denys Yurchenko wrote: > I use Stellaris In-Circuit Debug Interface. > > Thanks & Best Regards, > > Denys. > > > On Tue, 4 May 2021 at 09:57, Charles Manning wrote: > >> Hello >> >> Your debugger must be doing something to interfere with the operation of >> the CPU in some way. >> >> What kind of debugger setup are you using? >> >> >> On Tue, May 4, 2021 at 6:46 PM Denys Yurchenko >> wrote: >> >>> Hi, >>> >>> >>> >>> Yaffs2 mount() function runs 35 seconds with debugger attached, but >>> without debugger attached it runs 5 seconds. Why? >>> >>> Thanks & Best Regards, >>> >>> Denys. >>> _______________________________________________ >>> yaffs mailing list >>> yaffs@stoneboat.aleph1.co.uk >>> http://stoneboat.aleph1.co.uk/cgi-bin/mailman/listinfo/yaffs >>> >>