[sql] Record memory usage at various periods after startup.

[sql] Record memory usage at various periods after startup.

This will be used to track improvements occuring from enabling
memory-mapped I/O.

BUG=489784
Committed: https://crrev.com/c9e80ae207673d875e62d8c11d4d1e8ad4804366
Cr-Commit-Position: refs/heads/master@{#343100}

[Scott Hess - ex-Googler, 2015-08-11 22:12:10]

shess@chromium.org changed reviewers:
+ rmcilroy@chromium.org

[Scott Hess - ex-Googler, 2015-08-11 22:12:10]

I've been polishing a mmap CL, and thought maybe this should be landed a few
weeks ahead to generate a baseline to see how it worked.  WDYT?

[rmcilroy, 2015-08-12 10:50:50]

On 2015/08/11 22:12:10, Scott Hess wrote:
> I've been polishing a mmap CL, and thought maybe this should be landed a few
> weeks ahead to generate a baseline to see how it worked.  WDYT?

Sounds like a plan! lgtm, thanks!

[Scott Hess - ex-Googler, 2015-08-12 20:04:19]

shess@chromium.org changed reviewers:
+ asvitkine@chromium.org

[Scott Hess - ex-Googler, 2015-08-12 20:04:20]

Alexei, you put yourself on the watchlist, so maybe I'll upgrade you to reviewer
for histograms.xml...

[Alexei Svitkine (slow), 2015-08-12 20:17:21]

lgtm % naming suggestion

https://codereview.chromium.org/1283033004/diff/1/tools/metrics/histograms/hi...
File tools/metrics/histograms/histograms.xml (right):

https://codereview.chromium.org/1283033004/diff/1/tools/metrics/histograms/hi...
tools/metrics/histograms/histograms.xml:42835: +<histogram
name="Sqlite.MemoryKBOneDay" units="KB">
Nit: Suggest naming: Sqlite.MemoryKB.OneDay to make these more readable.

[Scott Hess - ex-Googler, 2015-08-12 20:23:43]

Thanks all!

https://codereview.chromium.org/1283033004/diff/1/tools/metrics/histograms/hi...
File tools/metrics/histograms/histograms.xml (right):

https://codereview.chromium.org/1283033004/diff/1/tools/metrics/histograms/hi...
tools/metrics/histograms/histograms.xml:42835: +<histogram
name="Sqlite.MemoryKBOneDay" units="KB">
On 2015/08/12 20:17:21, Alexei Svitkine wrote:
> Nit: Suggest naming: Sqlite.MemoryKB.OneDay to make these more readable.

Seems reasonable.

[Scott Hess - ex-Googler, 2015-08-12 20:34:27]

The CQ bit was checked by shess@chromium.org

[Scott Hess - ex-Googler, 2015-08-12 20:34:27]

The patchset sent to the CQ was uploaded after l-g-t-m from
asvitkine@chromium.org, rmcilroy@chromium.org
Link to the patchset: https://codereview.chromium.org/1283033004/#ps20001
(title: "Naming suggestion.")

[commit-bot: I haz the power, 2015-08-12 20:34:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1283033004/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1283033004/20001

[commit-bot: I haz the power, 2015-08-12 21:39:20]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-08-12 21:40:33]

Patchset 2 (id:??) landed as
https://crrev.com/c9e80ae207673d875e62d8c11d4d1e8ad4804366
Cr-Commit-Position: refs/heads/master@{#343100}