Now, I've one loader putting data to a Thread::Queue and 8 threads reading from that Thread::Queue and writing to a single output file. 
#--------------------------
# Insert Into File
#--------------------------
sub insert_into_file{
  my $fh = shift;
  my $record = shift;

  lock($x);
  $fh->print("$record\n");
}

[download]
The problem isn't with IO, see below the number of threads wanting for IO, its irrelevant... 
$ iostat -xndz 1
    r/s    w/s   kr/s   kw/s wait actv wsvc_t asvc_t  %w  %b device
    1.0   21.0    8.0  958.5  0.1  0.7    4.0   33.2   9   9 md/d10
    0.0   21.0    0.0  958.5  0.0  0.6    0.0   30.6   0   7 md/d11
    1.0   21.0    8.0  958.5  0.0  0.5    0.0   24.5   0   8 md/d12
    1.0   26.0    8.0  959.5  0.0  0.7    0.0   24.6   0  10 c0t1d0
    0.0   26.0    0.0  959.5  0.0  0.8    0.0   30.3   0  10 c0t0d0

Wait: number of threads queued for I/O
Actv: number of threads performing I/O
wsvc_t: Average time spend waiting on queue
asvc_t: Average time performing I/O
%w: Only useful if one thread is running on the entire machine – time spent 
waiting for I/O
%b: Device utilization – only useful if device can do just 1 I/O at a time (invalid 
for arrays etc...)
Output of truss 
syscall               seconds   calls  errors
read                     .560    7092
write                    .201    2363
lwp_park                3.621  132604
lwp_unpark              2.656  125751
yield                    .031    1148
                     --------  ------   ----
sys totals:             7.070  268958      0
usr time:              80.730
elapsed:               39.650

In reply to Re: Sun Solaris (SPARC processor) + Threads + performance/optimization by gulden
in thread Sun Solaris (SPARC processor) + Threads + performance/optimization by gulden

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