Add example gnt-debug submit-job json files

These files are being used to test the job queue performance with
various changes and conditions. Adding them here for posterity.
Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Makefile.am

@@ -289,6 +289,9 @@ EXTRA_DIST = \
 	doc/examples/ganeti.default-debug \
 	doc/examples/hooks/ethers \
 	doc/examples/hooks/ipsec.in \
+	doc/examples/gnt-debug/README \
+	doc/examples/gnt-debug/delay0.json \
+	doc/examples/gnt-debug/delay50.json \
 	test/testutils.py \
 	test/mocks.py \
 	$(dist_TESTS) \

doc/examples/gnt-debug/README

+In order to submit arbitrary jobs to ganeti one can call gnt-debug submit-job
+passing a suitably formatted json file. A few examples of those files are
+included here.
+
+Using delay0.json and delay50.json in conjunction with submit-job for example
+allows one to submit rapidly many short delay job (using --job-repeat),
+repeating the sleep opcode any number of times (using --op-repeat), either all
+at the same time or one at a time (with --each). This can be used to check the
+performance of the job queue.
+
+Examples:
+
+# Run 40 jobs with 10 opcodes each:
+gnt-debug submit-job --op-repeat 10 --job-repeat 40 --timing-stats delay0.json
+
+# Run 40 jobs with 1 opcode each:
+gnt-debug submit-job --op-repeat 1 --job-repeat 40 --timing-stats delay0.json
+
+# Run 40 jobs with 10 opcodes each and submit one at a time:
+gnt-debug submit-job --op-repeat 10 --job-repeat 40 --timing-stats --each delay0.json
+

doc/examples/gnt-debug/delay0.json

+[
+{"OP_ID": "OP_TEST_DELAY", "debug_level": 0, "dry_run": false, "duration": 0.0, "on_master": true, "on_nodes": []}
+]

doc/examples/gnt-debug/delay50.json

+[
+{"OP_ID": "OP_TEST_DELAY", "debug_level": 0, "dry_run": false, "duration": 0.05, "on_master": true, "on_nodes": []}
+]