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The properties that logd and friends react to are:
name type default description
ro.logd.auditd bool true Enable selinux audit daemon
ro.logd.auditd.dmesg bool true selinux audit messages sent to dmesg.
ro.logd.auditd.main bool true selinux audit messages sent to main.
ro.logd.auditd.events bool true selinux audit messages sent to events.
persist.logd.security bool false Enable security buffer.
ro.organization_owned bool false Override persist.logd.security to false
ro.logd.kernel bool svelte+ Enable klogd daemon
logd.statistics bool svelte+ Enable logcat -S statistics.
ro.debuggable number if not "1", logd.statistics &
ro.logd.kernel default false.
logd.logpersistd.enable bool auto Safe to start logpersist daemon service
logd.logpersistd string persist Enable logpersist daemon, "logcatd"
turns on logcat -f in logd context.
Responds to logcatd, clear and stop.
logd.logpersistd.buffer persist logpersistd buffers to collect
logd.logpersistd.size persist logpersistd size in MB
logd.logpersistd.rotate_kbytes persist logpersistd outout file size in KB.
persist.logd.logpersistd string Enable logpersist daemon, "logcatd"
turns on logcat -f in logd context.
persist.logd.logpersistd.buffer all logpersistd buffers to collect
persist.logd.logpersistd.size 256 logpersistd size in MB
persist.logd.logpersistd.count 256 sets max number of rotated logs to <count>.
persist.logd.logpersistd.rotate_kbytes 1024 logpersistd output file size in KB
persist.logd.size number ro Global default size of the buffer for
all log ids at initial startup, at
runtime use: logcat -b all -G <value>
ro.logd.size number svelte default for persist.logd.size. Larger
platform default sizes than 256KB are
known to not scale well under log spam
pressure. Address the spam first,
resist increasing the log buffer.
persist.logd.size.<buffer> number ro Size of the buffer for <buffer> log
ro.logd.size.<buffer> number svelte default for persist.logd.size.<buffer>
ro.config.low_ram bool false if true, logd.statistics,
ro.logd.kernel default false,
logd.size 64K instead of 256K.
persist.logd.filter string Pruning filter to optimize content.
At runtime use: logcat -P "<string>"
ro.logd.filter string "~! ~1000/!" default for persist.logd.filter.
This default means to prune the
oldest entries of chattiest UID, and
the chattiest PID of system
(1000, or AID_SYSTEM).
log.tag string persist The global logging level, VERBOSE,
DEBUG, INFO, WARN, ERROR, ASSERT or
SILENT. Only the first character is
the key character.
persist.log.tag string build default for log.tag
log.tag.<tag> string persist The <tag> specific logging level.
persist.log.tag.<tag> string build default for log.tag.<tag>
logd.buffer_type string (empty) The log buffer type: 'simple' or
'serialized' (default: 'serialized').
NB:
- auto - managed by /init
- svelte - see ro.config.low_ram for details.
- svelte+ - If empty, default to true if `ro.config.low_ram == false && ro.debuggable == true`
- ro - <base property> temporary override, ro.<base property> platform default.
- persist - <base property> override, persist.<base property> platform default.
- build - VERBOSE for native, DEBUG for jvm isLoggable, or developer option.
- number - support multipliers (K or M) for convenience. Range is limited
to between 64K and 256M for log buffer sizes. Individual log buffer ids
such as main, system, ... override global default.
- Pruning filter rules are specified as UID, UID/PID or /PID. A '~' prefix indicates that elements
matching the rule should be pruned with higher priority otherwise they're pruned with lower
priority. All other pruning activity is oldest first. Special case ~! represents an automatic
pruning for the noisiest UID as determined by the current statistics. Special case ~1000/!
represents pruning of the worst PID within AID_SYSTEM when AID_SYSTEM is the noisiest UID.
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