diff --git a/httpd.c b/httpd.c
index af387da..f324cdc 100644
--- a/httpd.c
+++ b/httpd.c
@@ -457,6 +457,9 @@ void job_post(const xs_val *job, int urgent)
 
         p_state->job_fifo_size++;
 
+        if (p_state->job_fifo_size > p_state->top_job_fifo_size)
+            p_state->top_job_fifo_size = p_state->job_fifo_size;
+
         /* unlock the mutex */
         pthread_mutex_unlock(&job_mutex);
 
diff --git a/snac.h b/snac.h
index 9d2a0c9..4ac0db7 100644
--- a/snac.h
+++ b/snac.h
@@ -50,6 +50,7 @@ typedef struct {
     int use_fcgi;           /* FastCGI use on/off */
     time_t srv_start_time;  /* start time */
     int job_fifo_size;      /* job fifo size */
+    int top_job_fifo_size;  /* maximum job fifo size seen */
     int n_threads;          /* number of configured threads */
     enum { THST_WAIT, THST_IN, THST_QUEUE, THST_STOP } th_state[MAX_THREADS];
 } srv_state;