> Setting HZ back to 100 fixed the problem. > > Is this some bug in HTB or HZ has to be set to 100? ehh other thought - htb is tested with HZ=1024 or HZ=100. You said that you use HZ 1000. In include/net/pkt_sched.h: #if HZ == 100 #define PSCHED_JSCALE 13 #elif HZ == 1024 #define PSCHED_JSCALE 10 #else #define PSCHED_JSCALE 0 #endif I'm not sure if variable-HZ patch repaired this too. Simply QoS subsystem is not aware what to do with this HZ rate. You might try to redefine PSCHED_JSCALE to be 10 for your case. Also try to set PSCHED_CLOCK_SOURCE to PSCHED_CPU in the same file. It might help. devik
