diff --git a/src/sibench/job.go b/src/sibench/job.go
index 7f803b8..306f7a1 100644
--- a/src/sibench/job.go
+++ b/src/sibench/job.go
@@ -44,5 +44,6 @@ type Job struct {
 
     /* extra */
     useBytes bool       // Boolean value to specify if you want the output in Bytes and not Bits
+    script string       // An optional script to be invoked at key points within each phase
 }
 
diff --git a/src/sibench/main.go b/src/sibench/main.go
index 26d58f5..29d1d7a 100644
--- a/src/sibench/main.go
+++ b/src/sibench/main.go
@@ -83,6 +83,9 @@ type Arguments struct {
     SliceSize int
     SliceCount int
 
+    // Script options
+    Script string
+
     // Synthesized options
     Bucket string
     BandwidthInBits uint64
@@ -107,29 +110,32 @@ Usage:
   sibench rados run  [-v LEVEL] [-p PORT] [-o FILE] [--individual-stats]
                      [-s SIZE] [-c COUNT] [-b BW] [-x MIX] [-r TIME] [-u TIME] [-d TIME] [-w FACTOR]
                      [-g GEN] [--slice-dir DIR] [--slice-count COUNT] [--slice-size BYTES] [--use-bytes]
-                     [--ceph-pool POOL] [--ceph-user USER] (--ceph-key KEY)
+                     [--ceph-pool POOL] [--ceph-user USER] (--ceph-key KEY) [--script SCRIPT]
                      [--clean-up] [--skip-read-verification] [--servers SERVERS] <targets> ...
   sibench cephfs run [-v LEVEL] [-p PORT] [-o FILE] [--individual-stats] 
                      [-s SIZE] [-c COUNT] [-b BW] [-x MIX] [-r TIME] [-u TIME] [-d TIME] [-w FACTOR]
                      [-g GEN] [--slice-dir DIR] [--slice-count COUNT] [--slice-size BYTES] [--use-bytes]
-                     [-m DIR] [--ceph-dir DIR] [--ceph-user USER] (--ceph-key KEY)
+                     [-m DIR] [--ceph-dir DIR] [--ceph-user USER] (--ceph-key KEY) [--script SCRIPT]
                      [--clean-up] [--skip-read-verification] [--servers SERVERS] <targets> ...
   sibench rbd run    [-v LEVEL] [-p PORT] [-o FILE] [--individual-stats] 
                      [-s SIZE] [-c COUNT] [-b BW] [-x MIX] [-r TIME] [-u TIME] [-d TIME] [-w FACTOR]
                      [-g GEN] [--slice-dir DIR] [--slice-count COUNT] [--slice-size BYTES] [--use-bytes]
                      [--ceph-pool POOL] [--ceph-datapool POOL] [--ceph-user USER] (--ceph-key KEY)
-                     [--clean-up] [--skip-read-verification] [--servers SERVERS] <targets> ...`
+                     [--script SCRIPT] [--clean-up] [--skip-read-verification] [--servers SERVERS] 
+                     <targets> ...`
     }
 
     s += ` 
   sibench block run  [-v LEVEL] [-p PORT] [-o FILE] [--individual-stats] 
                      [-s SIZE] [-c COUNT] [-b BW] [-x MIX] [-r TIME] [-u TIME] [-d TIME] [-w FACTOR]
                      [-g GEN] [--slice-dir DIR] [--slice-count COUNT] [--slice-size BYTES] [--use-bytes]
-                     [--block-device DEVICE] [--clean-up] [--skip-read-verification] [--servers SERVERS] 
+                     [--block-device DEVICE] [--script SCRIPT] [--clean-up] 
+                     [--skip-read-verification] [--servers SERVERS] 
   sibench file run   [-v LEVEL] [-p PORT] [-o FILE] [--individual-stats] 
                      [-s SIZE] [-c COUNT] [-b BW] [-x MIX] [-r TIME] [-u TIME] [-d TIME] [-w FACTOR]
                      [-g GEN] [--slice-dir DIR] [--slice-count COUNT] [--slice-size BYTES] [--use-bytes]
-                     [--file-dir DIR] [--clean-up] [--skip-read-verification] [--servers SERVERS] 
+                     [--script SCRIPT] [--file-dir DIR] [--clean-up] [--skip-read-verification] 
+                     [--servers SERVERS] 
   sibench -h | --help
 
 Options:
@@ -167,6 +173,7 @@ Options:
   --slice-count COUNT             The number of slices to construct for workload generation        [default: 10000]
   --slice-size BYTES              The size of each slice in bytes.                                 [default: 4097]
   --profile-prefix FILE           Enable profiling, using tne given prefix for any output.
+  --script SCRIPT                 Specifies a script to be run at key points in each phase.
 `
     return s
 }
@@ -353,6 +360,7 @@ func startRun(args *Arguments) {
     j.rampUp = uint64(args.RampUp)
     j.rampDown = uint64(args.RampDown)
     j.useBytes = args.UseBytes
+    j.script = args.Script
 
     j.order.JobId = 1
     j.order.CleanUpOnClose = args.CleanUp
diff --git a/src/sibench/manager.go b/src/sibench/manager.go
index 5dbc428..dfcb679 100644
--- a/src/sibench/manager.go
+++ b/src/sibench/manager.go
@@ -9,6 +9,7 @@ import (
 	"io"
 	"logger"
 	"os"
+    "os/exec"
 	"os/signal"
 	"strings"
 	"syscall"
@@ -137,6 +138,25 @@ func banner(msg string, padChar byte) string {
 }
 
 
+/**
+ * Runs a script, if we have one, at key points in the run.
+ */
+func (m *Manager) runScript(phase string, event string) {
+    if m.job.script == "" {
+        return
+    }
+
+    logger.Debugf("Running phase script: '%s %s %s'\n", m.job.script, phase, event)
+
+    cmd := exec.Command(m.job.script, phase, event)
+    err := cmd.Run()
+
+    if err != nil {
+        logger.Errorf("Failure running phase script: '%s %s %ws' - %v\n", m.job.script, phase, event, err)
+    }
+}
+
+
 /*
  * Sends an operation request to the servers.
  * If waitForResponse is true, then we block until all the servers have responded.
@@ -404,9 +424,19 @@ func (m *Manager) runPhaseForTime(msg string, secs uint64, startOp Opcode, stopO
                 logger.Infof("%v: %v\n", i, summary.String(m.job.order.ObjectSize, m.job.useBytes))
                 i++
 
-                // Draw some lines to indicate the ramp-up/ramp-down demarcation.
-                if (uint64(i) == m.job.rampUp) || (uint64(i) == m.job.rampUp + m.job.runTime) {
+                isRampUp := (uint64(i) == m.job.rampUp)
+                isRampDown := (uint64(i) == m.job.rampUp + m.job.runTime)
+
+                if isRampUp || isRampDown {
+                    // Draw some lines to indicate the ramp-up/ramp-down demarcation.
                     logger.Infof("-----------------------------------------------------------\n")
+
+                    // Run the script (if we have one) with suitable args.
+                    if isRampUp {
+                        go m.runScript(msg, "UP")
+                    } else {
+                        go m.runScript(msg, "DOWN")
+                    }
                 }
 
                 summary.Zero()