(command.CommandList children: [ (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:tracing spids:[166]) op: Equal rhs: {(/sys/kernel/debug/tracing)} spids: [166] ) ] spids: [166] ) (command.CommandList children: [ (command.Sentence child: (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:interval spids:[169]) op: Equal rhs: {(1)} spids: [169] ) ] spids: [169] ) terminator: <Op_Semi ';'> ) (command.Sentence child: (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:opt_timestamp spids:[173]) op: Equal rhs: {(0)} spids: [173] ) ] spids: [173] ) terminator: <Op_Semi ';'> ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:opt_debug spids:[177]) op: Equal rhs: {(0)} spids: [177] ) ] spids: [177] ) ] ) (C {(trap)} {(SQ <'quit=1'>)} {(INT)} {(QUIT)} {(TERM)} {(PIPE)} {(HUP)}) (command.FuncDef name: usage body: (command.BraceGroup children: [ (command.SimpleCommand words: [{(cat)}] redirects: [ (redir.HereDoc op: <Redir_DLessDash '<<-'> fd: 16777215 here_begin: {(END)} here_end_span_id: 226 stdin_parts: [ ('USAGE: cachestat [-Dht] [interval]\n') (' -D # print debug counters\n') (' -h # this usage message\n') (' -t # include timestamp\n') (' interval # output interval in secs (default 1)\n') (' eg,\n') (' cachestat # show stats every second\n') (' cachestat 5 # show stats every 5 seconds\n') ('\n') ('See the man page and example file for more info.\n') ] ) (redir.Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)}) ] ) (command.ControlFlow token:<ControlFlow_Exit exit>) ] spids: [204] ) spids: [200 203] ) (command.FuncDef name: warn body: (command.BraceGroup children: [ (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.Pipeline children: [(C {(eval)} {(DQ ($ VSub_At '$@'))})] negated: T ) terminator: <Op_Semi ';'> ) ] action: [ (command.SimpleCommand words: [ {(echo)} { (DQ ('WARNING: command failed ') (word_part.EscapedLiteralPart token: <Lit_EscapedChar '\\"'> ) ($ VSub_At '$@') (word_part.EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) ) } ] redirects: [(redir.Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)})] ) ] spids: [16777215 251] ) ] spids: [16777215 267] ) ] spids: [237] ) spids: [233 236] ) (command.FuncDef name: die body: (command.BraceGroup children: [ (command.SimpleCommand words: [{(echo)} {(DQ ($ VSub_At '$@'))}] redirects: [(redir.Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)})] ) (command.ControlFlow token:<ControlFlow_Exit exit> arg_word:{(1)}) ] spids: [276] ) spids: [272 275] ) (command.WhileUntil keyword: <KW_While while> cond: [(C {(getopts)} {(Dht)} {(opt)})] body: (command.DoGroup children: [ (command.Case to_match: {($ VSub_DollarName '$opt')} arms: [ (case_arm pat_list: [{(D)}] action: [ (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:opt_debug spids:[320]) op: Equal rhs: {(1)} spids: [320] ) ] spids: [320] ) ] spids: [317 318 323 16777215] ) (case_arm pat_list: [{(t)}] action: [ (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:opt_timestamp spids:[329]) op: Equal rhs: {(1)} spids: [329] ) ] spids: [329] ) ] spids: [326 327 332 16777215] ) (case_arm pat_list: [{(h)} {(Lit_Other '?')}] action: [(C {(usage)})] spids: [335 338 342 16777215] ) ] spids: [310 314 345] ) ] spids: [307 347] ) ) (C {(shift)} { (word_part.ArithSubPart anode: (arith_expr.ArithBinary op_id: Arith_Minus left: (arith_expr.ArithWord w:{($ VSub_DollarName '$OPTIND')}) right: (arith_expr.ArithWord w:{(Lit_Digits 1)}) ) spids: [351 360] ) } ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DParen child: (arith_expr.ArithWord w:{($ VSub_Pound '$#')}) spids: [368 373] ) terminator: <Op_Semi ';'> ) ] action: [ (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:interval spids:[379]) op: Equal rhs: {($ VSub_Number '$1')} spids: [379] ) ] spids: [379] ) ] spids: [16777215 376] ) ] spids: [16777215 382] ) (C {(echo)} { (DQ ('Counting cache functions... Output every ') ($ VSub_DollarName '$interval') (' seconds.')) } ) (command.AndOr ops: [Op_DPipe] children: [ (C {(cd)} {($ VSub_DollarName '$tracing')}) (C {(die)} { (DQ ('ERROR: accessing tracing. Root user? Kernel has FTRACE?\n') (' debugfs mounted? (mount -t debugfs debugfs /sys/kernel/debug)') ) } ) ] ) (C {(sysctl)} {(-q)} {(kernel.ftrace_enabled) (Lit_Other '=') (1)}) (command.AndOr ops: [Op_DPipe] children: [ (command.SimpleCommand words: [ {(printf)} { (DQ (mark_page_accessed) (Lit_Other '\\') (nmark_buffer_dirty) (Lit_Other '\\') (nadd_to_page_cache_lru) (Lit_Other '\\') (naccount_page_dirtied) (Lit_Other '\\') (n) ) } ] redirects: [(redir.Redir op:<Redir_Great '>'> fd:16777215 arg_word:{(set_ftrace_filter)})] ) (C {(die)} {(DQ ('ERROR: tracing these four kernel functions: mark_page_accessed,'))} { (DQ ( 'mark_buffer_dirty, add_to_page_cache_lru and account_page_dirtied (unknown kernel version?). Exiting.' ) ) } ) ] ) (C {(warn)} {(DQ ('echo nop > current_tracer'))}) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.Pipeline children: [ (command.SimpleCommand words: [{(echo)} {(1)}] redirects: [ (redir.Redir op: <Redir_Great '>'> fd: 16777215 arg_word: {(function_profile_enabled)} ) ] ) ] negated: T ) terminator: <Op_Semi ';'> ) ] action: [ (command.SimpleCommand words: [{(echo)}] redirects: [(redir.Redir op:<Redir_Great '>'> fd:16777215 arg_word:{(set_ftrace_filter)})] ) (C {(die)} {(DQ ('ERROR: enabling function profiling. Have CONFIG_FUNCTION_PROFILER? Exiting.'))} ) ] spids: [16777215 476] ) ] spids: [16777215 492] ) (command.AndOr ops: [Op_DAmp] children: [ (command.DParen child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_timestamp>) spids: [495 500] ) (C {(printf)} {(DQ ('%-8s '))} {(TIME)}) ] ) (C {(printf)} {(DQ ('%8s %8s %8s %8s %12s %10s'))} {(HITS)} {(MISSES)} {(DIRTIES)} {(RATIO)} {(DQ (BUFFERS_MB))} {(DQ (CACHE_MB))} ) (command.AndOr ops: [Op_DAmp] children: [ (command.DParen child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_debug>) spids: [534 539] ) (C {(printf)} {(DQ (' DEBUG'))}) ] ) (C {(echo)}) (command.CommandList children: [ (command.Sentence child: (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:quit spids:[555]) op: Equal rhs: {(0)} spids: [555] ) ] spids: [555] ) terminator: <Op_Semi ';'> ) (command.Assignment keyword: Assign_None pairs: [ (assign_pair lhs: (lhs_expr.LhsName name:secs spids:[559]) op: Equal rhs: {(0)} spids: [559] ) ] spids: [559] ) ] ) (command.WhileUntil keyword: <KW_While while> cond: [ (command.Sentence child: (command.DParen child: (arith_expr.ArithBinary op_id: Arith_DAmp left: (arith_expr.ArithUnary op_id: Arith_Bang child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike quit>) ) right: (arith_expr.ArithBinary op_id: Arith_DPipe left: (arith_expr.ArithUnary op_id: Arith_Bang child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_duration>) ) right: (arith_expr.ArithBinary op_id: Arith_Less left: (arith_expr.ArithVarRef token:<Lit_ArithVarLike secs>) right: (arith_expr.ArithVarRef token:<Lit_ArithVarLike duration>) ) ) ) spids: [564 585] ) terminator: <Op_Semi ';'> ) ] body: (command.DoGroup children: [ (command.DParen child: (arith_expr.BinaryAssign op_id: Arith_PlusEqual left: (lhs_expr.LhsName name:secs spids:[593]) right: (arith_expr.ArithVarRef token:<Lit_ArithVarLike interval>) ) spids: [591 600] ) (command.SimpleCommand words: [{(echo)} {(0)}] redirects: [ (redir.Redir op: <Redir_Great '>'> fd: 16777215 arg_word: {(function_profile_enabled)} ) ] ) (command.SimpleCommand words: [{(echo)} {(1)}] redirects: [ (redir.Redir op: <Redir_Great '>'> fd: 16777215 arg_word: {(function_profile_enabled)} ) ] ) (C {(sleep)} {($ VSub_DollarName '$interval')}) (command.AndOr ops: [Op_DAmp] children: [ (command.DParen child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_timestamp>) spids: [627 632] ) (C {(printf)} {(DQ ('%(%H:%M:%S)T '))} {(-1)}) ] ) (command.Pipeline children: [ (C {(cat)} {(/proc/meminfo)} {(trace_stat/function) (Lit_Other '*')}) (C {(awk)} {(-v)} {(Lit_VarLike 'debug=') ($ VSub_DollarName '$opt_debug')} { (SQ <'\n'> <'\t# match meminfo stats:\n'> <'\t$1 == "Buffers:" && $3 == "kB" { buffers_mb = $2 / 1024 }\n'> <'\t$1 == "Cached:" && $3 == "kB" { cached_mb = $2 / 1024 }\n'> <'\t# identify and save trace counts:\n'> <'\t$2 ~ /[0-9]/ && $3 != "kB" { a[$1] += $2 }\n'> <'\tEND {\n'> <'\t\tmpa = a["mark_page_accessed"]\n'> <'\t\tmbd = a["mark_buffer_dirty"]\n'> <'\t\tapcl = a["add_to_page_cache_lru"]\n'> <'\t\tapd = a["account_page_dirtied"]\n'> <'\n'> <'\t\ttotal = mpa - mbd\n'> <'\t\tmisses = apcl - apd\n'> <'\t\tif (misses < 0)\n'> <'\t\t\tmisses = 0\n'> <'\t\thits = total - misses\n'> <'\n'> <'\t\tratio = 100 * hits / total\n'> <'\t\tprintf "%8d %8d %8d %7.1f%% %12.0f %10.0f", hits, misses, mbd,\n'> <'\t\t ratio, buffers_mb, cached_mb\n'> <'\t\tif (debug)\n'> <'\t\t\tprintf " (%d %d %d %d)", mpa, mbd, apcl, apd\n'> <'\t\tprintf "\\n"\n'> <'\t}'> ) } ) ] negated: F ) ] spids: [588 694] ) ) (command.SimpleCommand words: [{(echo)}] redirects: [(redir.Redir op:<Redir_Great '2>'> fd:2 arg_word:{(/dev/null)})] ) (command.SimpleCommand words: [{(echo)} {(DQ ('Ending tracing...'))}] redirects: [(redir.Redir op:<Redir_Great '2>'> fd:2 arg_word:{(/dev/null)})] ) (C {(warn)} {(DQ ('echo 0 > function_profile_enabled'))}) (C {(warn)} {(DQ ('echo > set_ftrace_filter'))}) ] )