arif/xcat-core
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Instead of randomizing each retry, just randomize the first to get things spread out then do the triangular progression timeout

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git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/branches/2.7@14247 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
This commit is contained in:
jbjohnso
2012-11-05 14:56:38 +00:00
parent 7c7b6330ed
commit 4106dec47e
1 changed files with 6 additions and 6 deletions
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12
xCAT-server/lib/perl/xCAT/IPMI.pm
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@@ -16,7 +16,7 @@ use warnings "all";
use Time::HiRes qw/time/;
use IO::Socket::INET qw/!AF_INET6 !PF_INET6/;
my $initialtimeout=1.0;
my $initialtimeout=0.5;
use constant STATE_OPENSESSION=>1;
use constant STATE_EXPECTINGRAKP2=>2;
use constant STATE_EXPECTINGRAKP4=>3;
@@ -460,10 +460,10 @@ sub timedout {
return;
}
$self->{nowait}=1;
$self->{timeout} += 0.5+(0.5*rand()); #$self->{timeout}*2;
$self->{timeout} += 1; #$self->{timeout}*2;
if ($self->{noretry}) { return; }
if ($self->{timeout} > 5) { #giveup, really
$self->{timeout}=$initialtimeout;
$self->{timeout}=$initialtimeout+(0.5*rand());
my $rsp={};
$rsp->{error} = "timeout";
$self->{ipmicallback}->($rsp,$self->{ipmicallback_args});
@@ -685,7 +685,7 @@ sub init {
$self->{'sessionid'} = [0,0,0,0]; # init session id
$self->{'authtype'}=0; # first messages will have auth type of 0
$self->{'ipmiversion'}='1.5'; # send first packet as 1.5
$self->{'timeout'}=$initialtimeout; #start at a quick timeout, increase on retry
$self->{'timeout'}=$initialtimeout+(0.5*rand()); #start at a quick timeout, increase on retry
$self->{'seqlun'}=0; #the IPMB seqlun combo, increment by 4s
$self->{rqaddr}=0x81; #Per table '5-4' system sofware ids in the ipmi spec, we are allowed 0x81-0x8d software ids
#A problem with ipmi is that chatty commands (rinv) can mistake stale data for new if sequence number overflows
@@ -849,7 +849,7 @@ sub parse_ipmi_payload {
$rsp->{cmd} = shift @payload;
$rsp->{code} = shift @payload;
$rsp->{data} = \@payload;
$self->{timeout}=$initialtimeout;
$self->{timeout}=$initialtimeout+(0.5*rand());
$self->{ipmicallback}->($rsp,$self->{ipmicallback_args});
return 0;
}
@@ -965,7 +965,7 @@ sub sendpayload {
$sessions_waiting{$self}->{ipmisession}=$self;
if ($args{delayxmit}) {
$sessions_waiting{$self}->{timeout}=time()+$args{delayxmit};
$self->{timeout}=$initialtimeout/2; #since we are burning one of the retry attempts, start the backoff algorithm faster to make it come out even
$self->{timeout}=($initialtimeout+(0.5*rand()))/2; #since we are burning one of the retry attempts, start the backoff algorithm faster to make it come out even
undef $args{delayxmit};
return; #don't actually transmit packet, use retry timer to start us off
} else {