ACPR/android_system_core
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4 commits

Author SHA1 Message Date
Jin Qian
a1740cbaa4 storaged: disable taskio since it's too expensive 
It has no active user and will be replaced by uid io.

|--99.99%-- storaged_t::event()
      |    |--99.68%-- tasks_t::update_running_tasks()
      |    |    |    |--93.00%-- parse_task_info(unsigned int, task_info*)
      |    |    |    |    |--49.94%-- android::base::ReadFileToString(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*, bool)
      |    |    |    |    |--29.00%-- read
      |    |    |    |    |--5.00%-- std::__1::basic_istream<char, std::__1::char_traits<char> >::operator>>(unsigned long&)
      |    |    |    |    |--4.83%-- android::base::StringPrintf(char const*, ...)
      |    |    |    |    |--1.93%-- android::base::Split(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)

Bug: 34263766
Bug: 34198239
Change-Id: I3f4851b5ce27751eebd40f4b56e1ee24297c4c7d
 2017-01-20 20:41:14 -08:00
Jin Qian
27506fa41f storaged: remove redundant logging 
Don't log disk_stats and emmc_info to system buffer since they
are already uploaded to events buffer.

Use DEBUG flag to control disk perf logging.

Bug: 34331490
Change-Id: I5f628a1a46e1f72588da064523da69737bd67dcb
 2017-01-17 15:43:25 -08:00
ynwang
af49d9756f Storaged cleanup 
Compliance with Android Coding standards

Test: compile
Bug: 28826771
Change-Id: I10bc4a793bb1da75e8600b81a5d7ff913e310da1
 2016-12-21 11:08:24 -08:00
ynwang
62cb372279 storaged: add storaged native daemon 
Storaged periodically checks the devices' disk stats and eMMC lifetime.
This information is logged to both the kernel and event log. By event
logging, the data can be aggregated by the checkin service and then
sent to Sawmill.

It also periodically traverses /proc/[pid], maintaining the I/O usage of
all tasks (all sampled tasks). The task I/O data can be reported using
the --dump option.

Storaged is booted when the device boots up and requires the permission
for reading /proc/diskstats, /proc/[pid]/io and debugfs(eMMC ext_csd).
For detailed description, please refer to go/storaged.

Bug: 28826771
Change-Id: I774b1a44cc30092bac1bfcbc08bf487295e7cfed
 2016-12-15 15:56:33 -08:00