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* debug/io-stats: Adding stat for weighted & unweighted average latencyRichard Wareing2017-12-091-0/+43
Summary: - Our current approach to measuring "average fop latency" is badly flawed in that it doesn't weight the FOPs correctly according to how many occurred in the time interval. This makes Statisticians very sad. This patch adds an internally computed weighted average latency which will be far more efficient to display via ODS, as well as having the benefit of not being complete nonsense. Reviewers: kvigor, dph, sshreyas Reviewed By: sshreyas Change-Id: Ie3618f279b545610b7ed1a8482243fcc8dc53217 BUG: 1523353 Reviewed-on: https://review.gluster.org/18192 Reviewed-by: Shreyas Siravara <sshreyas@fb.com> Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Signed-off-by: Ana M. Neri <amnerip@fb.com>