platform_system_core/logd
Riley Andrews aede9897df Lower the priority of the threads in logd/logcat.
(cherry pick from commit d98f4e8af5)

sched_batch implies only a penalty to latency in scheduling, but
does not imply that the process will be given less cpu time. Increase
the nice level to 10 to prioritize it below ui threads.

Bug: 21696721
Change-Id: I075af059dc755402f7df9b0d7a66cca921ff04b2
2015-06-09 12:40:20 -07:00
..
tests logd: test modernization 2015-05-26 12:24:51 -07:00
Android.mk init.rc: logd: Add logpersistd (nee logcatd) 2015-06-02 15:17:59 -07:00
CommandListener.cpp logd: Cleanup 2015-05-12 15:51:46 -07:00
CommandListener.h logd: add reinit command 2015-03-12 12:24:47 -07:00
FlushCommand.cpp logd: Cleanup 2015-05-12 15:51:46 -07:00
FlushCommand.h logd: replace internal CLOCK_MONOTONIC use with sequence numbers 2015-03-18 12:43:23 -07:00
LogAudit.cpp logd: Cleanup 2015-05-12 15:51:46 -07:00
LogAudit.h logd: auditd remove logDmesg method 2014-12-05 20:56:44 +00:00
LogBuffer.cpp logd: filters remove leading expire messages and rate 2015-06-05 08:05:05 -07:00
LogBuffer.h logd: improve details on chatty records 2015-04-30 13:14:51 -07:00
LogBufferElement.cpp logd: filters remove leading expire messages and rate 2015-06-05 08:05:05 -07:00
LogBufferElement.h logd: filters remove leading expire messages and rate 2015-06-05 08:05:05 -07:00
LogCommand.cpp logd: Cleanup 2015-05-12 15:51:46 -07:00
LogCommand.h logd: institute getGroups for socket credentials 2014-02-28 13:48:33 -08:00
LogKlog.cpp logd: build breakage 2015-06-08 14:52:14 -07:00
LogKlog.h logd: fix kernel logline stutter 2015-06-08 13:10:31 -07:00
LogListener.cpp logd: Cleanup 2015-05-12 15:51:46 -07:00
LogListener.h logd: initial checkin. 2014-02-26 09:52:35 -08:00
LogReader.cpp logd: Cleanup 2015-05-12 15:51:46 -07:00
LogReader.h logd: libsysutils: logd startup outside init environment 2014-04-17 16:14:24 +00:00
LogStatistics.cpp logd: switch to unordered_map from BasicHashtable 2015-06-03 13:03:07 -07:00
LogStatistics.h logd: switch to unordered_map from BasicHashtable 2015-06-03 13:03:07 -07:00
LogTimes.cpp logd: filters remove leading expire messages and rate 2015-06-05 08:05:05 -07:00
LogTimes.h logd: filters remove leading expire messages and rate 2015-06-05 08:05:05 -07:00
LogWhiteBlackList.cpp logd: Cleanup 2015-05-12 15:51:46 -07:00
LogWhiteBlackList.h logd: optimize statistics 2015-03-20 12:31:23 -07:00
README.auditd logd: selinux auditd initial commit 2014-04-07 10:51:00 -07:00
README.property init.rc: logd: Add logpersistd (nee logcatd) 2015-06-02 15:17:59 -07:00
event.logtags logd: annotate worst-UID pruned entries 2015-04-10 15:45:08 -07:00
libaudit.c Revert "libaudit: limit to 5 selinux denials per sec" 2015-05-09 12:41:41 -07:00
libaudit.h logd: throttle SELinux denials to 20/sec 2014-11-19 13:35:36 -08:00
logpersist init.rc: logd: Add logpersistd (nee logcatd) 2015-06-02 15:17:59 -07:00
main.cpp Lower the priority of the threads in logd/logcat. 2015-06-09 12:40:20 -07:00

README.property

The properties that logd responds to are:

name                       type default  description
logd.auditd                 bool  true   Enable selinux audit daemon
logd.auditd.dmesg           bool  true   selinux audit messages duplicated and
                                         sent on to dmesg log
logd.klogd                  bool depends Enable klogd daemon
logd.statistics             bool depends Enable logcat -S statistics.
ro.config.low_ram           bool  false  if true, logd.statistics & logd.klogd
                                         default false
ro.build.type               string       if user, logd.statistics & logd.klogd
                                         default false
persist.logd.logpersistd    string       Enable logpersist daemon, "logcatd"
                                         turns on logcat -f in logd context
persist.logd.size          number 256K   default size of the buffer for all
                                         log ids at initial startup, at runtime
                                         use: logcat -b all -G <value>
persist.logd.size.main     number 256K   Size of the buffer for the main log
persist.logd.size.system   number 256K   Size of the buffer for the system log
persist.logd.size.radio    number 256K   Size of the buffer for the radio log
persist.logd.size.event    number 256K   Size of the buffer for the event log
persist.logd.size.crash    number 256K   Size of the buffer for the crash log

NB:
- number support multipliers (K or M) for convenience. Range is limited
  to between 64K and 256M for log buffer sizes. Individual logs override the
  global default.