NS2网络模拟(1)-延迟

  1: #NS2_有线部分\EndDelay.awk

  2:

  3: BEGIN {

  4:     #Initialize the variable

  5:     MaxID = 0;

  6:     i = 0;

  7: }

  8:

  9: {

 10: #Event Abbreviation Type Value

 11: #%g %d %d %s %d %s %d %d.%d %d.%d %d %d

 12: #Normal Event

 13:         #r: Receive

 14:         #d: Drop

 15:         #e: Error

 16:         #+: Enqueue

 17:         #-: Dequeue

 18: #double  Time

 19: #int  (Link-layer) Source Node

 20: #int  (Link-layer) Destination Node

 21: #string  Packet Name

 22: #int  Packet Size

 23: #string  Flags

 24: #int  Flow ID

 25: #int  (Network-layer) Source Address

 26: #int  Source Port

 27: #int  (Network-layer) Destination Address

 28: #int  Destination Port

 29: #int  Sequence Number

 30: #int  Unique Packet ID

 31:

 32:     #Evaluate the fields to new viariables

 33:     EVENT       = $1;

 34:     TIME        = $2;

 35:     SRCNODE     = $3

 36:     DSTNODE     = $4;

 37:     PKTNAME     = $5;

 38:     PKTSIZE     = $6;

 39:     FLAGS       = $7;

 40:     FLOWID      = $8;

 41:     SRCADDPORT  = $9;

 42:     DSTADDPORT  = $10;

 43:     SEQNO       = $11;

 44:     PKTID       = $12;

 45:

 46:     #Record the maxmum

 47:     if (PKTID > MaxID)

 48:         MaxID = PKTID;

 49:

 50:     #Record the transmitter time

 51:     if (StartTime[PKTID] == 0)

 52:         StartTime[PKTID] = TIME;

 53:

 54:

 55:     if (EVENT == "r" && FLOWID == 1)

 56:     {

 57: #        printf("after: %s\t%d\t%s\n", EVENT, FLOWID, TIME);

 58:         EndTime[PKTID] = TIME;

 59: #        printf("%g %d %d %s %d %s %d %d.%d %d.%d %d %d\n", EVENT, TIME, FLOWID, PKTID);

 60: #        printf("after: %s    %d    %s    %d\n", EVENT, FLOWID, EndTime[PKTID], PKTID);

 61: #        if (EVENT == "r")

 62: #        {

 63: #            EndTime[PKTID] = TIME;

 64: #        }

 65:

 66:     }

 67:     else

 68:     {

 69:         EndTime[PKTID] = -1;

 70:

 71:     }

 72:

 73:

 74: }

 75:

 76: END {

 77:     for (PKTID = 0; PKTID <= MaxID; PKTID ++)

 78:     {

 79:         Start = StartTime[PKTID];

 80:         End = EndTime[PKTID];

 81:         Delay = End - Start;

 82:         if (Delay >= 0)

 83:             printf("%f\t%f\n", Start, Delay);

 84: #        packet_duration = EndTime[PKTID] - StartTime[PKTID];

 85:

 86: #            printf("%f\t%f\n", start, packet_duration);

 87:     }

 88: }

 89: