doc: Update image resize READMEs

runtime/experiments/applications/imageresize/by_resolution/README.md

@@ -1,17 +1,5 @@
-# Resize
+# Resize Image by Resolution
 
-Resizes Images
+The goal of this experiment is to run the resize operation on small, medium, and large source images and measure how the size of the input image affects execution time.
 
-It appears that the initial request cuts off the bottom of the image. Thereafter, it seems that the runtime crashes out due to a socket error.
-
-```
-write: Bad file descriptor
-C: 07, T: 0x7f20eed26700, F: current_sandbox_main>
-        Unable to build and send client response
-
-C: 07, T: 0x7f20eed26700, F: client_socket_send>
-        Error sending to client: Bad file descriptor
-C: 07, T: 0x7f20eed26700, F: sandbox_close_http> PANIC!
-        Bad file descriptor
-find: 'result_13192.jpg': No such file or directory
-```
+The workload works sporadically, but the runtime errors out due to calls to `mremap`. The runtime gratuitously logs these calls for the time being.

runtime/experiments/applications/imageresize/test/README.md

@@ -1,17 +1,5 @@
-# Resize
+# Resize Images
 
-Resizes Images
+This script runs several test executions of the resize application, testing that the output is pixel-for-pixel identical to a known good output.
 
-It appears that the initial request cuts off the bottom of the image. Thereafter, it seems that the runtime crashes out due to a socket error.
-
-```
-write: Bad file descriptor
-C: 07, T: 0x7f20eed26700, F: current_sandbox_main>
-        Unable to build and send client response
-
-C: 07, T: 0x7f20eed26700, F: client_socket_send>
-        Error sending to client: Bad file descriptor
-C: 07, T: 0x7f20eed26700, F: sandbox_close_http> PANIC!
-        Bad file descriptor
-find: 'result_13192.jpg': No such file or directory
-```
+The workload works sporadically, but the runtime errors out due to calls to `mremap`. The runtime gratuitously logs these calls for the time being.