[PATCH] [LNT] Teach LNT to plot geomean trend

[Yi Kong]

On 18 August 2014 17:33, Chris Matthews <chris.matthews at apple.com> wrote:
> When you say “making heavy jobs… possible”, does this mean anyone using sqlite is going to experience a noticeable slowdown?  If so, do you have any guess on the impact?
>

Public perf server was quite unstable on SQLite and longer access time
will probably expose more concurrency issues and make it even worse.
With PostgreSQL in place, it can process slightly heavier queries.

On the performance side, each plot incurs around 9 seconds rendering
time on my SQLite setup with more than 1200 records. I updated the
second patch to tweak the performance, now it takes about 7 seconds
and uses less memory. For comparison, plotting history trend of a
single test takes 3 seconds.

Under normal usage, this shouldn't affect the server load too much.

-Yi
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