upowerd health check failures

[Paul Larson]

We ran baselines of many processes on an idle nexus4 using health-check for the last trusty image, and some of those have regressed since then. These could be real regressions, or they could be something that's expected due to changes that happened since that image. We need someone to investigate these and report whether it requires a fix, or whether the thresholds need to be adjusted, and why.

For upowerd, we see quite a lot more file IO and syncs than it did in trusty. Here are the results from the latest run at: Results from a recent test run can be seen at http://ci.ubuntu.com/smokeng/utopic/touch/mako/204:20140822:20140811.1/9853/health-check/

process: upowerd
PASSED: 0.09 >= 0.086667: health-check.cpu-load.cpu-load-total.system-cpu-percent
FAILED: 0.02 < 0.136667: health-check.cpu-load.cpu-load-total.total-cpu-percent
PASSED: 0.06 >= 0.05: health-check.cpu-load.cpu-load-total.user-cpu-percent
FAILED: 0.016666667 < 3.189998: health-check.file-access.file-access-total.access-count-total-rate
FAILED: 0.016666667 < 1.063333: health-check.file-io-operations.file-io-operations-total.close-call-total-rate
FAILED: 0.016666667 < 1.063333: health-check.file-io-operations.file-io-operations-total.open-call-total-rate
FAILED: 0.016666667 < 1.049999: health-check.file-io-operations.file-io-operations-total.read-call-total-rate
FAILED: 0.016666667 < 0.026667: health-check.file-io-operations.file-io-operations-total.write-call-total-rate
PASSED: 0.0 >= 0.0: health-check.file-system-syncs.sync-system-calls-total.fdatasync-call-count-total-rate
FAILED: 0.0 < 0.013333: health-check.file-system-syncs.sync-system-calls-total.fsync-call-count-total-rate
PASSED: 0.0 >= 0.0: health-check.file-system-syncs.sync-system-calls-total.sync-call-count-total-rate
PASSED: 0.0 >= 0.0: health-check.file-system-syncs.sync-system-calls-total.syncfs-call-count-total-rate
PASSED: 0.002777778 >= 0.0: health-check.heap-usage-via-brk.heap-usage-via-brk-total.brk-size-total-Kbytes-rate
PASSED: 0.002777778 >= 0.0: health-check.memory-usage-via-mmap.memory-usage-via-mmap-total.mmap-total-Kbytes-rate
PASSED: 256.0 >= 0.0: health-check.network-connections.network-connections-total.receive-total-rate
PASSED: 256.0 >= 0.0: health-check.network-connections.network-connections-total.send-total-rate
PASSED: 0.25 >= 0.01: health-check.wakeup-events.wakeup-events-total.wakeup-total-rate