Changeset 1e0a804

Timestamp:

05/18/18 11:39:59 (3 years ago)

Author:

Shane Alcock <salcock@…>

Branches:

cachetimestamps, develop, etsilive, master, rc-4.0.4, ringdecrementfix, ringperformance

Children:

1060b6d

Parents:

cc9c9de

git-author:

Shane Alcock <salcock@…> (04/17/18 16:58:12)

git-committer:

Shane Alcock <salcock@…> (05/18/18 11:39:59)

Message:

Update tracereplay to allow users to specify a speed up factor.

Location:

tools/tracereplay

Files:

• tracereplay.1 (modified) (3 diffs)
• tracereplay.c (modified) (5 diffs)

tools/tracereplay/tracereplay.1

@@ -4 +4 @@
 .SH SYNOPSIS
 .B tracereplay
-[\-b | \-\^\-broadcast] [-s \-\^\-snaplength [ snaplength] ] 
-[\-f | \-\^\-filter [ filter string ] ]
+[\-b | \-\^\-broadcast] [-s \-\^\-snaplength [ snaplength] ]
+[\-f | \-\^\-filter [ filter string ] ] [\-X | \-\^\-speedup [ factor] ]
 inputuri outputuri
 .SH DESCRPTION
@@ -23 +23 @@
 .TP
 .PD 0
-.BI \-s [snaplength]
+.BI \-s " snaplength"
 .TP
 .PD
-.BI \-\^\-snaplength [snaplength]
+.BI \-\^\-snaplength " snaplength"
 Truncate the packets to the length specified. This only makes a difference
 if the inputuri is a capture device. The value should be > 0. Inappropriate 
@@ -33 +33 @@
 .TP
 .PD 0
-.BI \-f [ filter string ]
+.BI \-f " filterstring"
 .TP
 .PD
-.BI \-\^\-filter [ filter ]
+.BI \-\^\-filter " filterstring"
 Apply a filter to the inputuri.
+
+.TP
+.PD 0
+.BI \-X " factor"
+.TP
+.PD
+.BI \-\^\-speedup " factor"
+Decrease the gaps between packets by the specified factor. This will accelerate
+the rate at which the replay is performed. By default, the factor is 1 (i.e.
+no acceleration).
 
 .SH LINKS

tools/tracereplay/tracereplay.c

@@ -196 +196 @@
         fprintf(stderr, " --broadcast\n");
         fprintf(stderr, "\t\tSend ethernet frames to broadcast address\n");
+        fprintf(stderr, " -X\n");
+        fprintf(stderr, " --speedup\n");
+        fprintf(stderr, "\t\tSpeed up replay by a factor of <speedup>\n");
 
 }
@@ -219 +222 @@
                         { "snaplen",    1, 0, 's'},
                         { "broadcast",  0, 0, 'b'},
+                        { "speedup",    1, 0, 'X'},
                         { NULL,         0, 0, 0}
                 };
 
-                int c = getopt_long(argc, argv, "bhs:f:",
+                int c = getopt_long(argc, argv, "bhs:f:X:",
                                 long_options, &option_index);
 
@@ -235 +239 @@
                                 snaplen = atoi(optarg);
                                 break;
-
+                        case 'X':
+                                speedup = atoi(optarg);
+                                break;
                         case 'b':
                                 broadcast = 1;
@@ -260 +266 @@
         }
 
+        if (speedup < 1) {
+                speedup = 1;
+        }
+
         uri = strdup(argv[optind]);
 
@@ -282 +292 @@
                 }
         }
+
+        if (trace_config(trace, TRACE_OPTION_REPLAY_SPEEDUP, &speedup)) {
+                trace_perror(trace, "error setting replay speedup factor");
+                return 1;
+        }
 
         /* Starting the trace */