21285: Document that only HPC dispatchers use tunnel slots.

Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom@curii.com>

diff --git a/lib/config/config.default.yml b/lib/config/config.default.yml
index 3924090ca9e0c47c44179cf4f82d141c337e5df6..ddf7a01e90790909499bb9cd6cfa6ee9da0ccba0 100644 (file)
--- a/lib/config/config.default.yml
+++ b/lib/config/config.default.yml
@@ -254,9 +254,10 @@ Clusters:
       # the incoming request queue before returning 503.
       MaxQueueTimeForLockRequests: 2s
 
-      # Maximum number of active gateway tunnel connections. A slot is
-      # consumed by each running container, and by each incoming
-      # "container shell" connection. These do not count toward
+      # Maximum number of active gateway tunnel connections. One slot
+      # is consumed by each "container shell" connection. If using an
+      # HPC dispatcher (LSF or Slurm), one slot is consumed by each
+      # running container.  These do not count toward
       # MaxConcurrentRequests.
       MaxGatewayTunnels: 1000