diff options
Diffstat (limited to 'lib/kernel/src/logger_h_common.erl')
-rw-r--r-- | lib/kernel/src/logger_h_common.erl | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/lib/kernel/src/logger_h_common.erl b/lib/kernel/src/logger_h_common.erl index 7caad366ae..336398cd4a 100644 --- a/lib/kernel/src/logger_h_common.erl +++ b/lib/kernel/src/logger_h_common.erl @@ -39,8 +39,8 @@ %%%----------------------------------------------------------------- %%% Covert log data on any form to binary --spec log_to_binary(Log,Config) -> LogString when - Log :: logger:log(), +-spec log_to_binary(LogEvent,Config) -> LogString when + LogEvent :: logger:log_event(), Config :: logger:config(), LogString :: binary(). log_to_binary(#{msg:={report,_},meta:=#{report_cb:=_}}=Log,Config) -> @@ -58,7 +58,7 @@ do_log_to_binary(Log,Config) -> catch _:_ -> ?LOG_INTERNAL(debug,[{formatter_error,Formatter}, {config,FormatterConfig}, - {log,Log}, + {log_event,Log}, {bad_return_value,String}]), <<"FORMATTER ERROR: bad_return_value">> end. @@ -69,10 +69,10 @@ try_format(Log,Formatter,FormatterConfig) -> C:R:S -> ?LOG_INTERNAL(debug,[{formatter_crashed,Formatter}, {config,FormatterConfig}, - {log,Log}, + {log_event,Log}, {reason, {C,R,logger:filter_stacktrace(?MODULE,S)}}]), - case {?DEFAULT_FORMATTER,?DEFAULT_FORMAT_CONFIG} of + case {?DEFAULT_FORMATTER,#{}} of {Formatter,FormatterConfig} -> "DEFAULT FORMATTER CRASHED"; {DefaultFormatter,DefaultConfig} -> @@ -135,7 +135,8 @@ call_cast_or_drop(Name, Bin) -> _:{timeout,_} -> ?observe(Name,{dropped,1}) end; - drop -> ?observe(Name,{dropped,1}) + drop -> + ?observe(Name,{dropped,1}) catch %% if the ETS table doesn't exist (maybe because of a %% handler restart), we can only drop the request @@ -152,12 +153,15 @@ check_load(State = #{id:=Name, mode := Mode, flush_reqs_qlen := FlushQLen}) -> {_,Mem} = process_info(self(), memory), ?observe(Name,{max_mem,Mem}), - %% make sure the handler process doesn't get scheduled - %% out between the message_queue_len check below and the - %% action that follows (flush or write). {_,QLen} = process_info(self(), message_queue_len), ?observe(Name,{max_qlen,QLen}), - + %% When the handler process gets scheduled in, it's impossible + %% to predict the QLen. We could jump "up" arbitrarily from say + %% async to sync, async to drop, sync to flush, etc. However, when + %% the handler process manages the log requests (without flushing), + %% one after the other, we will move "down" from drop to sync and + %% from sync to async. This way we don't risk getting stuck in + %% drop or sync mode with an empty mailbox. {Mode1,_NewDrops,_NewFlushes} = if QLen >= FlushQLen -> @@ -292,7 +296,7 @@ overload_levels_ok(HandlerConfig) -> TSQL = maps:get(toggle_sync_qlen, HandlerConfig, ?TOGGLE_SYNC_QLEN), DNRQL = maps:get(drop_new_reqs_qlen, HandlerConfig, ?DROP_NEW_REQS_QLEN), FRQL = maps:get(flush_reqs_qlen, HandlerConfig, ?FLUSH_REQS_QLEN), - (TSQL < DNRQL) andalso (DNRQL < FRQL). + (DNRQL > 1) andalso (TSQL =< DNRQL) andalso (DNRQL =< FRQL). error_notify(Term) -> ?internal_log(error, Term). |