如何将带宽限制到64kbps？

Arthur.Echo

在网上找了一个脚本，可以正确的限制带宽，但是当将其限制到64kbps时就出问题，错误提示：

1. HTB: quantum of class 10001 is small.Consider r2q change.<4>HTB:quantum of class 10010 is small.Consider r2q change.<4>HTB:quantum of class 10020 is small.

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是不是限制的太小了？如果是这样，那么最小可以限制到多少呢？
大虾帮忙，谢谢
脚本代码：

1. #!/bin/bash
   
2. # The Ultimate Setup For Your Internet Connection At Home
   
3. #
   
4. #
   
5. # Set the following values to somewhat less than your actual download
   
6. # and uplink speed. In kilobits
   
7. DOWNLINK=512
   
8. UPLINK=512
   
9. DEV=eth0
   
10. # clean existing down- and uplink qdiscs, hide errors
    
11. tc qdisc del dev $DEV root 2> /dev/null > /dev/null
    
12. tc qdisc del dev $DEV ingress 2> /dev/null > /dev/null
    
13. ###### uplink
    
14. # install root HTB, point default traffic to 1:20:
    
15. tc qdisc add dev $DEV root handle 1: htb default 20
    
16. # shape everything at $UPLINK speed - this prevents huge queues in your
    
17. # DSL modem which destroy latency:
    
18. tc class add dev $DEV parent 1: classid 1:1 htb rate ${UPLINK}kbit burst 6k
    
19. # high prio class 1:10:
    
20. tc class add dev $DEV parent 1:1 classid 1:10 htb rate ${UPLINK}kbit \
    
21. burst 6k prio 1
    
22. # bulk & default class 1:20 - gets slightly less traffic,
    
23. # and a lower priority:
    
24. tc class add dev $DEV parent 1:1 classid 1:20 htb rate ${UPLINK}kbit \
    
25. burst 6k prio 2
    
26. # both get Stochastic Fairness:
    
27. tc qdisc add dev $DEV parent 1:10 handle 10: sfq perturb 10
    
28. tc qdisc add dev $DEV parent 1:20 handle 20: sfq perturb 10
    
29. # TOS Minimum Delay (ssh, NOT scp) in 1:10:
    
30. tc filter add dev $DEV parent 1:0 protocol ip prio 10 u32 \
    
31. match ip tos 0x10 0xff flowid 1:10
    
32. # ICMP (ip protocol 1) in the interactive class 1:10 so we
    
33. # can do measurements & impress our friends:
    
34. tc filter add dev $DEV parent 1:0 protocol ip prio 10 u32 \
    
35. match ip protocol 1 0xff flowid 1:10
    
36. # To speed up downloads while an upload is going on, put ACK packets in
    
37. # the interactive class:
    
38. 
    
39. tc filter add dev $DEV parent 1: protocol ip prio 10 u32 \
    
40. match ip protocol 6 0xff \
    
41. match u8 0x05 0x0f at 0 \
    
42. match u16 0x0000 0xffc0 at 2 \
    
43. match u8 0x10 0xff at 33 \
    
44. flowid 1:10
    
45. # rest is 'non-interactive' ie 'bulk' and ends up in 1:20
    
46. ########## downlink #############
    
47. # slow downloads down to somewhat less than the real speed to prevent
    
48. # queuing at our ISP. Tune to see how high you can set it.
    
49. # ISPs tend to have *huge* queues to make sure big downloads are fast
    
50. #
    
51. # attach ingress policer:
    
52. tc qdisc add dev $DEV handle ffff: ingress
    
53. # filter *everything* to it (0.0.0.0/0), drop everything that's
    
54. # coming in too fast:
    
55. tc filter add dev $DEV parent ffff: protocol ip prio 50 u32 match ip src \
    
56. 0.0.0.0/0 police rate ${DOWNLINK}kbit burst 10k drop flowid :1
    

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Arthur.Echo

好像只是警告，不是错误