librdmacm/cmtime: Add option to control number of threads

Add a command line argument to set the number of threads
assigned to a work queue.

Signed-off-by: Sean Hefty <[email protected]>

librdmacm/examples/cmtime.c

@@ -763,7 +763,7 @@ int main(int argc, char **argv)
 
  hints.ai_port_space = RDMA_PS_TCP;
  hints.ai_qp_type = IBV_QPT_RC;
- while ((op = getopt(argc, argv, "s:b:c:m:p:q:r:t:")) != -1) {
+ while ((op = getopt(argc, argv, "s:b:c:m:n:p:q:r:t:")) != -1) {
  switch (op) {
  case 's':
  dst_addr = optarg;
@@ -784,6 +784,9 @@ int main(int argc, char **argv)
  mimic_qp_delay = (uint32_t) atoi(optarg);
  mimic = true;
  break;
+ case 'n':
+ num_threads = (uint32_t) atoi(optarg);
+ break;
  case 'r':
  retries = atoi(optarg);
  break;
@@ -798,6 +801,7 @@ int main(int argc, char **argv)
  printf("\t[-p port_number]\n");
  printf("\t[-q base_qpn]\n");
  printf("\t[-m mimic_qp_delay_us]\n");
+ printf("\t[-n num_threads]\n");
  printf("\t[-r retries]\n");
  printf("\t[-t timeout_ms]\n");
  exit(EXIT_FAILURE);

librdmacm/man/cmtime.1

@@ -57,6 +57,11 @@ The server's port number.
 The first QP number to use when creating connections without allocating
 hardware QPs. The test will use the values between base_qpn and base_qpn
 plus connections when connecting. (default 1000)
+.TP
+\-n num_threads
+Sets the number of threads to spawn used to process connection events
+and hardware operations. (default 1)
+.TP
 \-m mimic_qp_delay_us
 "Simulates" QP creation and modify calls by replacing them with a
 simple sleep function instead. This allows testing the CM at larger