perl File::Tail not reading lines from file after certain period -

i having issues understanding why file::tail fails read lines updating file 1000s of transactions, , automatic rollover .

it read extend correctly, later slows down, , long period not able read lines in logs. can confirm actual log being populated when file::tail shows nothing.

my $file = file::tail->new(name=>"$name",                            tail => 1000,                            maxinterval=>1,                            interval=>1,                            adjustafter=>5,resetafter=>1,                             ignore_nonexistant=>1,                            maxbuf=>32768);  while (defined(my $line=$file->read)) {     #my $line=$file->read;     $xml_string  = "";      #### read 1 event per line , deal xml.     #### if log entry not slim log, ignore it.     if ($line =~ /(\<slim\-log\>.*\<\/slim\-log\>)/) {         do_something     } else {         not_working reason     } 

can please me understand this. know log file updated @ 10mb per second or 1000 events per second approximation.

should handing filehandle or file::tail results other more efficient way?

seems there's limitations in file::tail. there's suggestions around other more direct options (a pipe, fork, thread, seeking end of file in perl) discussed in http://www.perlmonks.org/?node_id=387706.

my favorite pick blocking read pipe:

open(tail, "tail -f $name|") or die "tail : $!"; while (<tail>) {         test_and_do_something }