current kernel built without TCO (-fno-optimize-sibling-calls) is almost unusable

 I've built 13/current kernel with "-fno-optimize-sibling-calls" option
to have full and true stacks.

 And my test stand (which is lousy Atom D2500, I need to admit) becomes
unusable with such kernel.

 Here are NO any errors or message on console, but system drops ssh
connection after several seconds (soemtimes before logon, sometimes
right after showing shell), timeouts connections to it, etc.

 When I able to run "top -SH" (for several seconds!) it shows 98% idle!

-- 
// Lev Serebryakov