ÿØÿà JFIF    ÿÛ „  ( %"1!%)+...383,7(-.+  -+++--++++---+-+-----+---------------+---+-++7-----ÿÀ  ß â" ÿÄ     ÿÄ H    !1AQaq"‘¡2B±ÁÑð#R“Ò Tbr‚²á3csƒ’ÂñDS¢³$CÿÄ   ÿÄ %  !1AQa"23‘ÿÚ   ? ôÿ ¨pŸªáÿ —åYõõ\?àÒü©ŠÄï¨pŸªáÿ —åYõõ\?àÓü©ŠÄá 0Ÿªáÿ Ÿå[úƒ ú®ði~TÁbqÐ8OÕpÿ ƒOò¤Oè`–RÂáœá™êi€ßÉ< FtŸI“öÌ8úDf´°å}“¾œ6  öFá°y¥jñÇh†ˆ¢ã/ÃÐ:ªcÈ "Y¡ðÑl>ÿ ”ÏËte:qž\oäŠe÷󲍷˜HT4&ÿ ÓÐü6ö®¿øþßèô Ÿ•7Ñi’•j|“ñì>b…þS?*Óôÿ ÓÐü*h¥£ír¶ü UãSç‚Ÿ[AÐaè[ûª•õ&õj?†Éö+EzP—WeÒírJFt ‘BŒ†Ï‡%#tE Øz ¥OÛ«!1›üä±Í™%ºÍãö]°î(–:@<‹ŒÊö×òÆt¦ãº+‡¦%ÌÁ²h´OƒJŒtMÜ>ÀÜÊw3Y´•牋4ǍýʏTì>œú=Íwhyë,¾Ôò×õ¿ßÊa»«þˆѪQ|%6ž™A õ%:øj<>É—ÿ Å_ˆCbõ¥š±ý¯Ýƒï…¶|RëócÍf溪“t.СøTÿ *Ä¿-{†çàczůŽ_–^XþŒ±miB[X±d 1,é”zEù»& î9gœf™9Ð'.;—™i}!ôšåîqêÛ٤ёý£½ÆA–àôe"A$˝Úsäÿ ÷Û #°xŸëí(l »ý3—¥5m! rt`†0~'j2(]S¦¦kv,ÚÇ l¦øJA£Šƒ J3E8ÙiŽ:cÉžúeZ°€¯\®kÖ(79«Ž:¯X”¾³Š&¡* ….‰Ž(ÜíŸ2¥ª‡×Hi²TF¤ò[¨íÈRëÉ䢍mgÑ.Ÿ<öäS0í„ǹÁU´f#Vß;Õ–…P@3ío<ä-±»Ž.L|kªÀê›fÂ6@»eu‚|ÓaÞÆŸ…¨ááå>åŠ?cKü6ùTÍÆ”†sĤÚ;H2RÚ†õ\Ö·Ÿn'¾ ñ#ºI¤Å´%çÁ­‚â7›‹qT3Iï¨ÖÚ5I7Ë!ÅOóŸ¶øÝñØôת¦$Tcö‘[«Ö³šÒ';Aþ ¸èíg A2Z"i¸vdÄ÷.iõ®§)¿]¤À†–‡É&ä{V¶iŽ”.Ó×Õÿ û?h¬Mt–íª[ÿ Ñÿ ÌV(í}=ibÔ¡›¥¢±b Lô¥‡piη_Z<‡z§èŒ)iÖwiÇ 2hÙ3·=’d÷8éŽ1¦¸c¤µ€7›7Ø ð\á)} ¹fËí›pAÃL%âc2 í§æQz¿;T8sæ°qø)QFMð‰XŒÂ±N¢aF¨…8¯!U  Z©RÊ ÖPVÄÀÍin™Ì-GˆªÅËŠ›•zË}º±ŽÍFò¹}Uw×#ä5B¤{î}Ð<ÙD é©¤&‡ïDbàÁôMÁ." ¤‡ú*õ'VŽ|¼´Úgllº¼klz[Æüï÷Aób‡Eÿ dÑ»Xx9ÃÜ£ÁT/`¼¸vI±Ýµ·Ë‚“G³þ*Ÿû´r|*}<¨îºœ @¦mÄ’M¹”.œ«Y–|6ÏU¤jç¥ÕÞqO ˜kDÆÁ¨5ÿ š;Њ¦¦€GÙk \ –Þ=â¼=SͧµªS°ÚÍpÜãQűÀõ¬?ÃÁ1Ñ•õZà?hóœ€ L¦l{Y*K˜Ù›zc˜–ˆâ ø+¾ ­-Ök¥%ùEÜA'}ˆ><ÊIè“bpÍ/qÞâvoX€w,\úªò6Z[XdÒæ­@Ö—€$òJí#é>'°Ú ôª˜<)4ryÙ£|óAÅn5žêŸyÒäMÝ2{"}‰–¤l÷ûWX\l¾Á¸góÉOÔ /óñB¤f¸çñ[.P˜ZsÊË*ßT܈§QN¢’¡¨§V¼(Üù*eÕ“”5T¨‹Âê¥FŒã½Dü[8'Ò¥a…Ú¶k7a *•›¼'Ò·\8¨ª\@\õ¢¦íq+DÙrmÎ…_ªæ»ŠÓœ¡¯’Ré9MÅ×D™lælffc+ŒÑ,ý™ÿ ¯þǤ=Å’Á7µ÷ÚÛ/“Ü€ñýã¼àí¾ÕÑ+ƒ,uµMâÀÄbm:ÒÎPæ{˜Gz[ƒ¯«® KHà`ßØŠéí¯P8Aq.C‰ à€kòpj´kN¶qô€…Õ,ÜNŠª-­{Zö’æû44‰sŽè‰îVíRœÕm" 6?³D9¡ÇTíÅꋇ`4«¸ÝÁô ï’ýorqКÇZ«x4Žâéþuïf¹µö[P ,Q£éaX±`PÉÍZ ¸äYúg üAx ’6Lê‚xÝÓ*äQ  Ï’¨hÍ =²,6ï#rÃ<¯–£»ƒ‹,–ê•€ aÛsñ'%Æ"®ÛüìBᝠHÚ3ß°©$“XnœÖ’î2ËTeûìxîß ¦å¿çÉ ðK§þ{‘t‚Ϋ¬jéîZ[ ”š7L¥4VÚCE×]m¤Øy”ä4-dz£œ§¸x.*ãÊÊ b÷•h:©‡¦s`BTÁRû¾g⻩‹jø sF¢àJøFl‘È•Xᓁà~*j¯ +(ÚÕ6-£¯÷GŠØy‚<Ç’.F‹Hœw(+)ÜÜâÈzÄäT§FߘãÏ;DmVœ3Àu@mÚüXÝü•3B¨òÌÁÛ<·ÃÜ z,Ì@õÅ·d2]ü8s÷IôÞ¯^Ç9¢u„~ëAŸï4«M? 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It might be useful to debug issues related # to cron tasks that take too much time to run, or overlap, or get executed # too fast.. # # Hint: In some systems, cron tasks might not properly use lockfiles to # prevent themselves from being run twice in a row and some "strange" # things might happen if the system is overloaded and a cron task takes # more than expected. And, no, this is not something that Cron should # prevent (for more information see Debian bug #194805). # # In order for this script to work # # together with the logging enhancements included # in Debian's vixie cron (3.0pl1-95) that make it possible to log # when do cron tasks end. # # # How to use: # - Modify /etc/init.d/cron so that the calls to cron pass the '-L 2' # argument # (Hint: change lines 27 and 47 so that they end with '-- -L 2 $LSBNAMES' # instead of '-- $LSBNAMES') # In Debian you need cron-3.0pl1-95 or later. # Note: future versions of cron might use an /etc/default/cron file # to provide arguments to cron. # # - Review /etc/syslog.conf to determine where does the output of the cron # facility goes to (might be /var/log/syslog together with other messages # but you can also configure syslog to store them at /var/log/cron.log) # # - Run the script (by default it will read input /var/log/syslog but you # can point to other file using the '-f' switch) and review the output # # - (Optionally) If you want to analyse log files for a long period # concatenate different log files, extract all CRON related entries # to a file and process that. # # You could do, for example, this: # # zcat -f /var/log/syslog* | grep CRON >cron-log ; \ # perl stats-cron.pl -f cron-log # # # This program is copyright 2006 by Javier Fernandez-Sanguino # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # For more information please see # http://www.gnu.org/licenses/licenses.html#GPL # TODO: # - Print time internal of file analysis (from 'XXX' to 'XXX') based on the # first and the last log entry read. # # - Detect overlaped entries for the same task (start of an entry before the # previous one finished) # # - Make it possible to filter by users # # - Consider adapting to other log formats (other cron programs? Solaris?) by # separating analysis and extraction in the code and making it possible # to switch to different analysis methods. # Required modules eval 'use Parse::Syslog'; if ($@) { print STDERR "ERROR: Parse::Syslog not installed, please install this Perl library\n"; print STDERR "ERROR: (in Debian it is provided by the 'libparse-syslog-perl' package)\n"; exit 1; } use Parse::Syslog; use Getopt::Std; # Parse command line getopts('dhvf:'); $opt_d = 0 if ! defined ($opt_d) ; if ( $opt_h ) { print "Usage: $ARGV[0] [-dhv] [-f syslog file]"; exit 1; } # Note: in Debian's default syslog configuration log messages are # sent to /var/log/syslog but you might have edited it to use # /var/log/cron.log instead. Which, BTW, is more efficient because # we do not need to parse the syslog to extract only cron messages. my $LOGFILE = $opt_f || "/var/log/syslog"; # Sanity checks if ( ! -r $LOGFILE ) { print STDERR "ERROR: Cannot read logfile $LOGFILE"; } my $parser = Parse::Syslog->new( $LOGFILE); print STDERR "Starting parse of file $LOGFILE\n" if $opt_v; while(my $log = $parser->next) { if ( $log->{program} =~ /CRON/ ) { print STDERR "DEBUG: Found syslog entry: $log->{pid}\n" if $opt_d; # We extract the entries with the same text but with 'CMD' (start) # and 'END' (end) to check if it's the same we use the PID reported # by cron. if ($log->{text} =~ /CMD \(/) { my $pid; if ($log->{text} =~ /\(\[(\d+)\]/ ) { # Debian - with loglevel 8, the child process id is # reported $pid = $1; } else { # All the other cases, the process ID of the # child process is the same one as the log entry $pid = $log->{pid}; } add_entry($log->{timestamp},$log->{text},$pid, $log->{pid}) } if ($log->{text} =~ /END \(/) { my $pid; if ($log->{text} =~ /\(\[(\d+)\]/ ) { # Debian - with loglevel 8 $pid = $1; } else { # Other cases $pid = "UNKNOWN"; } clear_entry($log->{timestamp},$log->{text},$pid,$log->{pid}); } } } print STDERR "Finished parse of file $LOGFILE\n" if $opt_v; # Analysis, we find all entries with a start and stop timestamp # and print them generate_analysis(); # Stats: # - average time of execution of cron jobs # - cronjob which executed slowest # - cronjob which executed fastes # - cronjobs which start before they finish print_stats(); exit 0; sub find_user { # Extract a user from a cron entry my ($text) = @_; my $user = ""; if ( $text =~ /^\((.*?)\)/ ) { $user = $1; } return $user; } sub find_prg { # Extract a program from a cron entry my ($text) = @_; my $prg = ""; if ( $text =~ /(CM|EN)D\s*\((.*)\s*\)\s*$/ ) { $prg = $2; $prg =~ s/^\[\d+\]\s+//; # Strip off child process numbers # (Debian loglevel 8) } return $prg; } sub add_entry { # Get a syslog entry and add it to the table of entries for analysis my ($time, $text, $pid, $ppid) = @_; my ($user, $prg); print STDERR "DEBUG: Entering add_entry with @_\n" if $opt_d; $user = find_user($text); if ( ! defined ($user) ) { print STDERR "WARN: Cannot find user for cron job (pid $pid)\n"; return; } $prg = find_prg($text); if ( ! defined ($prg) ) { print STDERR "WARN: Cannot find program for cron job (pid $pid)\n"; return; } my $value = $pid."-".$time; print STDERR "DEBUG: Adding cronjob of user $user to list: $prg\n" if $opt_d; add_cron_entry($user, $prg, $value, $ppid); $cron_entries{$user}{$prg}{'count'}++; return; } sub clear_entry { # Get a syslog entry, find the start entry and add the timestamp difference # to the list of timestamps for that user # # There's two ways to match entries: # - (in Debian, using loglevel 8): By matching the child process ID # between the entries # - in all the other cases: By matching the process ID of the # END message (which belongs to the parent) with the process IF # of the CMD message (which belongs to the child) my ($timestamp, $text, $pid, $ppid) = @_; my ($user, $prg, $entry, $count); my @array; my @stack; print STDERR "DEBUG: Entering clear_entry with @_\n" if $opt_d; $user = find_user($text); if ( $user eq "" ) { print STDERR "WARN: Cannot find user for cron job (pid $pid)\n"; return; } $prg = find_prg($text); if ( $prg eq "" ) { print STDERR "WARN: Cannot find program for cron job (pid $pid)\n"; return; } if ( ! defined ( $cron_entries{$user}{$prg}{'item'} ) ) { print STDERR "WARN: End entry without start entry (pid $pid)\n"; return; } @array = split(':', $cron_entries{$user}{$prg}{'item'}); $count = $#array + 1 ; print STDERR "DEBUG: $count cron entries for $user, task '$prg'\n" if $opt_d; my $finish = 0; while ( $finish == 0 ) { $entry = pop @array; last if ! defined ($entry) ; # Pop all entries and look for one whose pid matches my ($spid, $stimestamp) = split ("-", $entry); print STDERR "DEBUG: Comparing entry $spid to $pid\n" if $opt_d; if ( ( $pid ne "UNKNOWN" && $pid == $spid ) || $ppid-$spid == 1 ) { my $timediff = $timestamp-$stimestamp; $timediff = 0 if $timediff < 0; print STDERR "DEBUG: Entries match, time difference of $timediff\n" if $opt_d ; $cron_entries{$user}{$prg}{'finished'}++; if (defined ( $cron_times{$user}{$prg} ) ) { $cron_times{$user}{$prg} = join(":", $cron_times{$user}{$prg}, $timediff); } else { $cron_times{$user}{$prg} = $timediff; } $finish = 1; } else { print STDERR "DEBUG: Pushing entry $spid into stack\n" if $opt_d; push @stack, $entry; } } # Push all remaining entries to the stack $cron_entries{$user}{$prg}{'item'}=""; $count = $#array + 1 ; if ($opt_d) { print STDERR "DEBUG: Restoring all entries (size: array $count"; $count = $#stack + 1 ; print STDERR ", stack $count)\n"; } print STDERR "DEBUG: Total finished tasks: $cron_entries{$user}{$prg}{'finished'} out of $cron_entries{$user}{$prg}{'count'}\n" if defined $cron_entries{$user}{$prg}{'finished'} && $opt_d; print STDERR "DEBUG: Unmatched now: $cron_entries{$user}{$prg}{'item'}\n" if $opt_d; while ( $entry = pop @array ) { add_cron_entry($user, $prg, $entry); } while ( $entry = pop @stack ) { add_cron_entry($user, $prg, $entry); } print STDERR "DEBUG: Finish execution of clear_entry\n" if $opt_d; return; } sub add_cron_entry { my ($user, $prg, $entry) = @_; if ( defined ($cron_entries{$user}{$prg}) && $cron_entries{$user}{$prg} ne "" ) { $cron_entries{$user}{$prg}{'item'} = join(":", $cron_entries{$user}{$prg}{'item'}, $entry); } else { $cron_entries{$user}{$prg}{'item'} = $entry; $cron_entries{$user}{$prg}{'count'} = 0; $cron_entries{$user}{$prg}{'finished'} = 0; $cron_entries{$user}{$prg}{'unmatched'} = 0 ; $cron_entries{$user}{$prg}{'average'} = 0 ; $cron_entries{$user}{$prg}{'minimum'} = 0 ; $cron_entries{$user}{$prg}{'maximum'} = 0; } } sub count_unmatched { my ($user, $prg) = @_; my ($count, @array); return 0 if ! defined ( $cron_entries{$user}{$prg}{'item'} ); @array = split(':', $cron_entries{$user}{$prg}{'item'}); $count = $#array + 1 ; return $count; } sub find_average { my ($user, $prg) = @_; my ($average, $count, $total, @array, $entry); $total = 0 ; return -1 if ! defined ( $cron_times{$user}{$prg} ); @array = split(':', $cron_times{$user}{$prg}); $count = $#array + 1 ; while ( defined ( $entry = pop @array ) ) { $total += $entry; } $average = $total / $count; return $average; } sub find_minimum { my ($user, $prg) = @_; my ($minimum, @array, $entry); $minimum = -1; return -1 if ! defined ( $cron_times{$user}{$prg} ); @array = split(':', $cron_times{$user}{$prg}); while ( defined ( $entry = pop @array ) ) { if ( $minimum == -1 ) { $minimum = $entry; } else { $minimum = $entry if $entry < $minimum; } } return $minimum; } sub find_maximum { my ($user, $prg) = @_; my ($maximum, @array); $maximum = -1; return -1 if ! defined ( $cron_times{$user}{$prg} ); @array = split(':', $cron_times{$user}{$prg}); while ( defined ( $entry = pop @array ) ) { if ( $maximum == -1 ) { $maximum = $entry ; } else { $maximum = $entry if $entry > $maximum; } } return $maximum; } sub generate_analysis { # For each user and program calculate the average time for the task my ($user, $prg); foreach $user (keys %cron_entries) { print STDERR "DEBUG: Calculating data for user '$user'\n" if $opt_d; foreach my $prg ( keys %{$cron_entries{$user}} ) { print STDERR "DEBUG: Calculating data for task '$prg'\n" if $opt_d; my $unmatched = count_unmatched($user, $prg); my $average = find_average($user, $prg); my $minimum = find_minimum($user, $prg); my $maximum = find_maximum($user, $prg); $cron_entries{$user}{$prg}{'unmatched'} = $unmatched; $cron_entries{$user}{$prg}{'average'} = $average; $cron_entries{$user}{$prg}{'minimum'} = $minimum; $cron_entries{$user}{$prg}{'maximum'} = $maximum; } } } sub print_stats { # Print information of cron statistics my ($user, $prg); foreach $user (keys %cron_entries) { print "Cron statistics for user '$user'\n"; foreach $prg ( keys %{$cron_entries{$user}} ) { print "\tTask: '$prg'\n"; print "\t\tDEBUG: $cron_times{$user}{$prg}\n" if $opt_d; print <