Add memuse stats and fix disk I/O computations.
This changes adds memory usage stats after 1 5, 30, 150, and 750
minutes of active use (approximated by wall
clock time minus sleep time). We log only the anonymous memory
usage (active + inactive) as we expect that other types of
allocations would not convey much additional information.
This also fixes the disk I/O computation to use actual active
time elapsed between callbacks, instead of assuming the expected
interval has elapsed. The existing code causes errors in
both directions when a suspend/resume cycle occurs between callbacks.
TEST=verify that about:histograms page contains Platform.MemuseAnon1 after 1 minute and Platform.MemuseAnon2 after 5 minutes.
Reviewed-by: Darin Petkov <firstname.lastname@example.org>
Tested-by: Luigi Semenzato <email@example.com>
3 files changed