Sometimes acces to /proc/<pid> blocks. In such a case the system load is
increased by 1. It seems the blocking occurs, when a normal process is stuck
in L-TLB, e.g.:
Jan 7 17:25:56 kaili kernel: mgetty S 7FFFFFFF 0 7192 1 (L-TLB) 6422
Jan 7 17:25:56 kaili kernel: sig: 0 0000000000000000 0000000000000000 :X
Killing mgetty unblocks the stuck processes. The kernel threads (they are
also L-TLB) do not have this problem.
Further investigation shows:
cd'ing to the /proc/<pid> of such a L-TLB process doesn't block,
"echo *" doesn't block
"ll stat statm status" doesn't block
"ll cwd" blocks
Peter
--
_ x ___ p.steiner@t-online.de (Peter Steiner)
/ \_/_\_ /,--' Linux User #55148 (http://counter.li.org/)
\/>'~~~~//
\_____/ perl -e'while(<>){s/=\n//g;s/=([\dA-F]{2})/chr(hex($1))/eg;print;}'
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