Restructure specs.

Add line protocol description with supported metrics.
Adapt sqlite job schema.

metrics/lineprotocol.md

@@ -0,0 +1,35 @@
+# Overview
+
+ClusterCockpit uses the InfluxData line-protocol for collecting the node metric
+data.
+
+```
+<measurement>,<tag set> <field set> <timestamp [s]>
+```
+
+Supported measurements:
+* node – Tags: host, cpu
+* socket – Tags: host, socket
+* cpu -- Tags: host, cpu
+
+## Supported node level fields
+
+* `load`
+* `mem_used`
+* `net_bw` - split into `ib_bw` and `eth_bw` if required
+* `file_bw` - split into multiple file systems if required
+
+## Supported socket fields
+
+All socket metrics can be aggregated to coarser granularity.
+
+* `power`
+* `mem_bw`
+
+## Supported cpu level fields
+
+All cpu metrics can be aggregated to coarser granularity.
+
+* `ipc`
+* `flops_any`
+* `clock`

schema/sql/jobs-sqlite.sql

@@ -1,9 +1,9 @@
 CREATE TABLE job ( id INTEGER PRIMARY KEY,
  job_id TEXT, user_id TEXT, project_id TEXT, cluster_id TEXT,
- start_time INTEGER, stop_time INTEGER, duration INTEGER,
+ start_time INTEGER, duration INTEGER,
  walltime INTEGER, job_state TEXT,
  num_nodes INTEGER, node_list TEXT, has_profile INTEGER,
- mem_used_max REAL, flops_any_avg REAL, mem_bw_avg REAL, ib_bw_avg REAL, file_bw_avg REAL);
+ mem_used_max REAL, flops_any_avg REAL, mem_bw_avg REAL, net_bw_avg REAL, file_bw_avg REAL);
 CREATE TABLE tag ( id INTEGER PRIMARY KEY, tag_type TEXT, tag_name TEXT);
 CREATE TABLE jobtag ( job_id INTEGER, tag_id INTEGER, PRIMARY KEY (job_id, tag_id),
  FOREIGN KEY (job_id) REFERENCES job (id)  ON DELETE CASCADE ON UPDATE NO ACTION,