docs: added csit tests job specs.

Change-Id: I271b1c700f72204dcf03bee6f2cd30b25ca5663e
Signed-off-by: Maciek Konstantynowicz <mkonstan@cisco.com>
(cherry picked from commit a0465dc55b2f7edfa86e7803704bdb1415fd2b8e)

diff --git a/docs/job_specs/perf_tests_job_specs.md b/docs/job_specs/perf_tests_job_specs.md
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+## Performance Tests Job Specifications
+
+## Scope
+
+Following FD.io CSIT test job specifications are provided in this note:
+
+- Select list of performance tests for daily trending and extensive per
+  release test coverage (behaviour repeatibility verification, graphs,
+  analytics and comparisons).
+- Full list of performance tests for per release results reporting.
+
+Next sections list test selection criteria for each group, with testbed
+environments listed in round brackets (...).
+
+## Select List Test Jobs
+
+### NICs
+
+- Primary: xxv710 (2n-skx, 3n-skx), xl710 (3n-hsw), x553 (3n-tsh).
+- Secondary: x710 (2n-skx, 3n-skx).
+
+### Test Suites
+
+- Primary: all forwarding baseline, all forwarding scale, some feature
+  spot checks.
+- Secondary: some forwarding base, forwarding maximum scale.
+
+### Frame Sizes
+
+- 64B: ip4, ip4_tunnels, l2, vts, container_memif, vm_vhost.
+- 78B: ip6, ip6_tunnels, srv6.
+- imix: crypto, nfv_density.
+
+### Processor Cores
+
+- Cores: 1c, 2c, 4c.
+
+## Full List Test Jobs
+### NICs
+
+- Primary: xxv710 (2n-skx, 3n-skx), xl710 (3n-hsw), x553 (3n-tsh).
+- Secondary: x520 (3n-hsw), x710 (skx, hsw), vic1227 (3n-hsw), vic1385
+  (3n-hsw).
+
+### Test Suites
+
+- Primary: all tests.
+- Secondary: some forwarding base, forwarding maximum scale.
+
+### Frame Sizes
+
+- 64B: ip4, ip4_tunnels, l2, vts, container_memif, vm_vhost, crypto.
+- 78B: ip6, ip6_tunnels, srv6.
+- imix: all including crypto and nfv_density.
+- 1518B: ip4, ip4_tunnels, ip6, ip6_tunnels, srv6, l2, vts,
+  container_memif, vm_vhost, crypto.
+- 9000B: ip4, ip4_tunnels, ip6, ip6_tunnels, srv6, l2, vts,
+  container_memif, vm_vhost, crypto.
+  - no vic1227, no vic1385 due to lack of support for 9000B.
+
+### Processor Cores
+
+  - Cores: 1c, 2c, 4c.
+
+## Test Job Definitions
+### Test Suite Allocation per Job
+
+In order to avoid multi-day jobs executing the tests, following is a
+simple approach to split tests across exclusive job executions:
+
+- Separate jobs per (testbed environment, nic model, test-directory)
+- Each job executes tests for:
+  - All specified frame sizes.
+  - All specified cores.
+
+### Report Jobs
+
+Patches defining RF Tag Selectors for each group are:
+
+- select-list: https://gerrit.fd.io/r/c/csit/+/21146
+  - Execution frequency: 10 times for report.
+- full-list: https://gerrit.fd.io/r/c/csit/+/21438
+  - Incomplete definition.
+  - Execution frequency: Once for report.
+- nfv_density: https://gerrit.fd.io/r/c/csit/+/21361
+  - Execution frequency: 5..10 times for report.
+- tcp: https://gerrit.fd.io/r/c/csit/+/21456
+  - Execution frequency: 10 times for report.
+
+### Daily Trending Jobs
+
+Frequency of executing daily trending jobs differs between the
+development cycle and report generation cycle. In the latter case the
+frequency gets reduced in order to allocated more of a (limited)
+physical testbed resource to tests required for report and reduce the
+time required to complete data collection for report.
+
+- Daily tests
+  - Development cycle:
+    - Frequency: vpp select-list MRR tests twice a day.
+    - Times (UTC): every day starting at 02:00 and 14:00.
+    - Duration: jobs are monitored to last no longer than 12 hrs.
+  - Report cycle:
+    - Frequency: vpp select-list MRR tests once a day.
+    - Times (UTC): every Monday and Thursday starting at 02:00.
+    - Duration: jobs are monitored to last no longer than 12 hrs.
+- Weekly tests
+  - Development cycle:
+    - Frequency: dpdk tests and vpp select-list NDR/PDR (MLRsearch) tests once a week.
+    - Times (UTC): every Sunday at 02:00.
+    - Duration: jobs are monitored to last no longer than 24 hrs.
+  - Report cycle:
+    - Same as in development cycle.
+
+## Exceptions
+### Tests Failing Due to Known Issues
+
+- KernelVM: 9000B frames are failing
+  - https://jira.fd.io/browse/CSIT-1532
+
+## TODOs
+
+- Add test types
+  - mlrsearch
+  - mrr
+  - plrsearch
+  - http/tcp
+  - nfvdensity
+    - vpp-ip4
+    - vpp-ipsec
+
+- Analyse trending testbed load - PM, MK
+  - 3x 3n-hsw
+  - 2x 3n-skx
+    - tunnel tests only
+  - 4x 2n-skx
+
+- Future
+  - Add weekly ndrpdr jobs and report-like comparisons to previous release
+
+## END OF DOCUMENT
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