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Message ID: 293     Entry time: Wed Jun 8 03:46:51 2016
Author: TD & ML 
Subject: TapeServer compression disabled 
CHnaged TapeServer configuration file to disable data compression

tapeserver options 6 -> tapeserver options 4

See http://npg.dl.ac.uk/MIDAS/download/tapeserver.html

aidas1> cat /MIDAS/TapeServer/Linux64/TS_configuration
#device configuration information
#    any line starting with a # is a comment and is ignored
stats  ./stats
#    devices available   -   list ends with a null line or line starting with a &
#    format       class_name     device_name    driver_task_path_name
#       class_name MUST be one of dlt, exabyte, scsitape, sink
#       driver_task_path_name normally is omitted
#dlt           /dev/nst0    ./driver
file          /dev/file/0  ./driver
sink          /dev/null/0  ./driver
&
#data link configuration information  - list end with a null line
#    format   link_task_path_name  
./linkTCP
&
#program options - list end with a null line
msg_reporting_level 0x0180fff8
#   use 0x0080fff8 to enable msg logging
msg_logging_level 0xfff8
tapeserver_options 4
#   use 0x0080fff8 to enable msg logging
#    default for following is 16Kbytes - both MUST be the same at present
data_buffer_size 64
tape_block_size 64
disc_file_size 2000
#
file_path_base /TapeData
&
#end of information

Merger ~600k items/s, TapeServer ~4500kb/s, driver process CPU ~1.3%

Tasks: 519 total,   2 running, 512 sleeping,   3 stopped,   2 zombie
Cpu(s):  0.5%us,  0.5%sy,  7.1%ni, 91.9%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   8048160k total,  7877128k used,   171032k free,    54624k buffers
Swap: 18415608k total,   124036k used, 18291572k free,  6509416k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND            
22565 npg       30  10  327m  13m  12m R 100.0  0.2 115:05.32 sort2b            
 6055 npg       22   2 2117m 718m 635m S 13.9  9.1   1:03.67 merge64.AD         
 4398 npg       20   0 1523m 317m  31m S  5.0  4.0  78:36.04 firefox            
 3795 root      20   0  248m  92m 8272 S  4.0  1.2  98:58.94 Xorg               
 4655 npg       20   0  402m  20m 8964 S  2.6  0.3  19:33.57 gnome-terminal     
 6091 npg       20   0 19676 1284 1100 S  1.3  0.0   0:07.01 driver             
 6088 npg       20   0 21592 6740 6544 S  0.7  0.1   0:03.07 master             
 6093 npg       20   0 17880 1260 1028 S  0.7  0.0   0:03.12 linkTCP            
 6486 npg       20   0 15304 1576  924 R  0.7  0.0   0:02.66 top                
18761 npg       20   0 15304 1572  916 S  0.7  0.0   1:29.13 top                
   69 root      20   0     0    0    0 S  0.3  0.0   0:35.68 events/2           
 3270 root      20   0     0    0    0 S  0.3  0.0   0:10.29 nfsd               
 4124 npg       20   0 1080m  33m  13m S  0.3  0.4   3:03.69 nautilus           
 5994 npg       20   0 2021m  49m  49m S  0.3  0.6   0:01.46 link64             
 5997 npg       20   0 2021m  49m  49m S  0.3  0.6   0:01.61 link64             
 5998 npg       20   0 2021m  49m  49m S  0.3  0.6   0:02.41 link64             
 6003 npg       20   0 2021m  49m  49m S  0.3  0.6   0:00.30 link64  
ELOG V3.1.4-unknown