Here goes:
May 16 21:56:39|14629|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14630|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14631|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14632|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14633|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14634|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14635|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14636|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14637|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14638|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14639|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14640|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14641|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14642|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14643|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14644|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
May 16 21:56:39|14645|poll_loop|DBG|0-ms timeout: 0x805bac1(bridge_wait)
0x8063da9(main) 0xb7470e9c
On Wed, Aug 25, 2010 at 5:03 PM, Ben Pfaff <b...@nicira.com> wrote:
> On Wed, Aug 25, 2010 at 01:03:16PM -0700, Ben Pfaff wrote:
> > On Wed, Aug 25, 2010 at 02:53:05PM -0300, Luiz Henrique Ozaki wrote:
> > > I'm trying to create a bond interface with OpenvSwitch in a XenServer
> 5.6
> > > and I'm getting a high load CPU for the ovs-vswitchd, but It's working
> > > apparently.
> >
> > Hi Luiz. This shouldn't happen.
> >
> > When the vswitch is in this high-CPU consumption state, please turn on
> > poll_loop debugging with "ovs-appctl vlog/set poll_loop". This should
> > output a bunch of extra DBG messages for the poll_loop module to the
> > log. Then please run the log through the ovs-backtrace script that I'm
> > appending, supplying a binary with debug symbols as its argument and the
> > log as the input, and pass along the output. This will probably help to
> > identify the problem.
>
> Here's the script:
>
> #! /usr/bin/perl -w
>
> use strict;
>
> # Check command line.
> if (grep ($_ eq '-h' || $_ eq '--help', @ARGV)) {
> print <<'EOF';
> backtrace, for converting raw addresses into symbolic backtraces
> usage: $0 BINARY... < LOG
> $0 BINARY... ADDRESS...
> where BINARY is the binary file or files from which to obtain symbols
> and ADDRESS is an address to translate (beginning with "0x")
> or LOG contains addresses to translate.
>
> At least one BINARY must be specified.
> EOF
> exit 0;
> }
> die "backtrace: at least one argument required (use --help for help)\n"
> if @ARGV == 0;
>
> # Find binaries.
> our @binaries;
> my @addresses;
> for my $arg (@ARGV) {
> if (-e $arg) {
> push(@binaries, $arg);
> } elsif ($arg =~ /^(0x)?[0-9a-fA-F]+/) {
> push(@addresses, $arg);
> } else {
> die "backtrace: $arg: not found (use --help for help)\n";
> }
> }
> if (!...@binaries) {
> die "backtrace: no binary specified (use --help for help)\n";
> }
>
> # Find addr2line.
> my ($a2l) = search_path ("i386-elf-addr2line") || search_path
> ("addr2line");
> if (!$a2l) {
> die "backtrace: neither `i386-elf-addr2line' nor `addr2line' in PATH\n";
> }
> sub search_path {
> my ($target) = @_;
> for my $dir (split (':', $ENV{PATH})) {
> my ($file) = "$dir/$target";
> return $file if -e $file;
> }
> return undef;
> }
>
> our %cache;
> sub translate {
> my ($address) = @_;
>
> if (defined($cache{$address})) {
> return %{$cache{$address}};
> }
>
> my %translation;
> for my $bin (@binaries) {
>
> my ($function, $line);
> open(A2L, "$a2l -fsie $bin $address|");
> chomp($function = <A2L>);
> chomp($line = <A2L>);
> close(A2L);
>
> if ($function ne '??' || $line ne '??:0') {
> $translation{FUNCTION} = $function;
> $translation{LINE} = $line;
> $translation{BINARY} = $bin;
> last;
> }
> }
> $cache{$address} = \%translation;
>
> return %translation;
> }
>
> if (@addresses) {
> # Print backtrace.
> my ($cur_binary);
> for my $addr (@addresses) {
> my %loc = translate($addr);
> if (defined ($loc{BINARY})
> && @binaries > 1
> && (!defined ($cur_binary) || $loc{BINARY} ne $cur_binary)) {
> $cur_binary = $loc{BINARY};
> print "In $cur_binary:\n";
> }
>
> $addr = sprintf ("0x%08x", hex ($addr)) if $addr =~
> /^0x[0-9a-f]+$/i;
>
> print $addr, ": ";
> if (defined ($loc{BINARY})) {
> my ($function) = $loc{FUNCTION};
> my ($line) = $loc{LINE};
> $line =~ s/^(\.\.\/)*//;
> $line = "..." . substr ($line, -25) if length ($line) > 28;
> print "$function ($line)";
> } else {
> print "(unknown)";
> }
> print "\n";
> }
> exit(0);
> }
>
> sub translate_address {
> my ($address) = @_;
> my %loc = translate($address);
> my ($s) = $address;
> if (defined($loc{BINARY})) {
> $s .= "($loc{FUNCTION})" if $loc{FUNCTION} ne '??';
> $s .= "($loc{LINE})" if $loc{LINE} ne '??:0';
> }
> return $s;
> }
>
> while (<STDIN>) {
> chomp;
> if (/poll_loop.*0x|backtrace/) {
> s/(0x[0-9a-fA-F]+)/translate_address($1)/ge;
> }
> print "$_\n";
> }
>
--
[]'s
Luiz Henrique Ozaki
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