Queue drops with FTP

All,

I need help to understand and resolve the queue drop issue with FTP.. The
traffic is shaped to 10Mbps but noticing huge queue drops when using
FTP...Suspecting that the FTP pushing more traffic within the traffic shaping
interval (25ms) though the 30sec offered rate indicates less than 10Mbps. How
do I resolve this the problem without increasing the shape average.. Can I
increase sustained bits/interval thereby increasing the shaping sampling
interval ?? Does that affect the application performance ??

policy-map PM-parent_generic-PW_temp
class CM-FIN
  shape average 10000000
  queue-limit 1500
class class-default
shape average 2000000

USPR1#sh policy-map interface GigabitEthernet0/3.1301
GigabitEthernet0/3.1301

  Service-policy output: PM-parent_generic-PW_temp

    Class-map: CM-FIN (match-all)
      41263 packets, 57551708 bytes
      30 second offered rate 6552000 bps, drop rate 639000 bps
      Match: ip dscp af11 (10)
      Traffic Shaping
           Target/Average Byte Sustain Excess Interval Increment
             Rate Limit bits/int bits/int (ms) (bytes)
         10000000/10000000 62500 250000 250000 25 31250

        Adapt Queue Packets Bytes Packets Bytes Shaping
        Active Depth Delayed Delayed Active
        - 0 37738 52215350 18690 27074295 no

Rgds
Bala.

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Received on Wed Oct 26 2011 - 17:24:27 ART