MELVYL SYSTEM TELNET RESPONSE TIME                             
                 Time period: 04/01/99 through 04/30/99                         
                                                                                
                                                                                
1.0  OVERALL RESPONSE TIME:                                                     
___________________________                                                     
                                                                                
  For a total of  3,195,268 commands:*                                          
                                                                                
     25% completed in less than    0.0 seconds.                                 
     50% completed in less than    0.1 seconds.                                 
     75% completed in less than    0.3 seconds.                                 
     90% completed in less than    0.8 seconds.                                 
     95% completed in less than    1.7 seconds.                                 
     99% completed in less than    7.0 seconds.                                 
                                                                                
1.1 BY TIME OF DAY, IN SECONDS:                                                 
_______________________________                                                 
                                    All commands completed in less than*        
                    No.      25%     50%     75%     90%     95%     99%        
                    ___      ___     ___     ___     ___     ___     ___        
  Prime Time    2,250,123    0.0     0.1     0.3     0.9     1.8     7.5        
  (10am-6pm)                                                                    
                                                                                
  Non-Prime Time  945,145    0.0     0.1     0.2     0.7     1.4     5.8        
  (6pm-10am)                                                                    
                                                                                
                                                                                
  In two hour intervals:                                                        
                                    All commands completed in less than*        
                    No.      25%     50%     75%     90%     95%     99%        
                    ___      ___     ___     ___     ___     ___     ___        
                                                                                
    12-2am        59,980     0.0     0.1     0.2     0.5     1.0     4.4        
    2-4am         37,352     0.0     0.1     0.2     0.4     0.8     4.0        
    4-6am         24,939     0.0     0.1     0.2     0.4     0.8     3.8        
    6-8am         45,027     0.0     0.1     0.2     0.6     1.2     4.7        
    8-10am       276,054     0.0     0.1     0.3     0.8     1.5     6.0        
    10-12am      538,571     0.0     0.1     0.3     1.0     2.0     7.7        
    12-2pm       576,080     0.0     0.1     0.3     0.9     1.8     7.4        
    2-4pm        665,524     0.0     0.1     0.3     0.9     2.0     7.9        
    4-6pm        469,948     0.0     0.1     0.3     0.8     1.6     6.8        
    6-8pm        219,333     0.0     0.1     0.2     0.7     1.5     6.5        
    8-10pm       173,148     0.0     0.1     0.2     0.7     1.4     6.2        
    10-12pm      109,312     0.0     0.1     0.2     0.5     1.1     5.2        
                                                                                
* Logons and Logoffs not included.                                              
                                                                                
                                                                                
2.0  SPECIFIC RESPONSE TIME:                                                    
____________________________                                                    
                                                                                
  By Type of Command, in seconds                                                
                                    Commands completed in less than:            
                    No.      25%     50%     75%     90%     95%     99%        
                    ___      ___     ___     ___     ___     ___     ___        
  FIND           1197898     0.1     0.2     0.6     1.9     3.6    11.7        
  DISPLAY        1699360     0.1     0.2     0.3     0.5     0.9     2.1        
  BROWSE           6,121     0.0     0.1     0.7     3.6     7.1    20.4        
  SELECT             860     0.0     0.0     0.1     0.1     0.2     2.0        
  HELP            71,811     0.0     0.0     0.0     0.0     6.6    38.5        
  EXPLAIN         60,339     0.0     0.0     0.0     0.0     0.0     0.3        
  SET            151,017     0.0     0.0     0.0     0.1     1.1     3.9        
  SHOW            14,775     0.0     0.0     0.0     0.0     0.2     0.4        
  LOGON          225,887     3.0     6.8    15.1    31.3    53.4   220.4        
  LOGOFF          29,221     0.0     0.0     0.0     0.0     0.0     0.0        
  FINDs, by index, in seconds                                                   
                                                                                
                                    Commands completed in less than:            
                    No.      25%     50%     75%     90%     95%     99%        
                    ___      ___     ___     ___     ___     ___     ___        
  PA              55,424     0.1     0.1     0.3     0.7     1.2     3.7        
  CA               5,020     0.1     0.2     0.5     1.3     2.1     5.0        
  AU              24,083     0.1     0.2     0.4     0.9     1.6     4.3        
  TW              94,203     0.1     0.4     1.3     3.0     4.9    20.2        
  SU              46,134     0.1     0.2     0.6     1.8     3.0     6.9        
  XCA                151     0.1     0.1     0.2     0.6     0.9     2.2        
  XT              41,278     0.0     0.1     0.1     0.2     0.3     1.1        
  XS               1,987     0.1     0.1     0.4     1.3     2.2     4.6        
  TI->XT           9,661     0.1     0.1     0.1     0.2     0.4     0.9        
  TI->TW           9,220     0.2     0.5     1.3     2.9     4.7    20.8        
  Catalog Other  114,909     0.0     0.0     0.0     0.1     0.5     3.1        
  TEN PA          14,640     0.4     0.7     1.1     2.4     5.8    28.8        
  TEN CA              42     0.3     0.6     0.9     1.3     1.9     3.1        
  TEN AU             106     0.1     0.2     0.4     1.2     1.8     5.3        
  TEN TW             484     0.2     0.4     1.0     2.3     4.2     7.6        
  TEN SU           2,999     0.3     0.6     0.9     1.6     3.0    11.3        
  TEN XCA              0     0.0     0.0     0.0     0.0     0.0     0.0        
  TEN XT              99     0.1     0.1     0.1     0.2     0.4    21.0        
  TEN XS              41     0.2     0.7     1.1     2.0     2.2     3.2        
  TEN TI->XT          33     0.1     0.1     0.1     0.1     0.2     0.7        
  TEN TI->TW          63     0.2     0.4     1.5     7.7    13.5    17.7        
  TEN Other       10,900     0.2     0.4     0.8     1.5     2.5    11.8        
  COMMENT          7,919     0.3     0.6     1.0     1.9     3.3    12.5        
  MJO              7,243     0.1     0.2     0.6     2.0     3.7     8.4        
  MED PA          55,638     0.1     0.1     0.1     0.2     0.5     1.8        
  MED TW          17,728     0.1     0.2     0.6     1.3     2.1     6.7        
  MED SW             455     0.1     0.2     0.8     2.4     4.1    10.6        
  MED SU           8,885     0.1     0.1     0.9     2.6     4.8    12.0        
  MED MSU            414     0.1     0.2     0.9     2.3     3.3     6.0        
  MED XS           2,194     0.1     0.2     0.8     1.9     3.7     9.0        
  MED MXS          3,042     0.3     0.4     0.7     1.2     2.2    10.2        
  MED XT           1,142     0.1     0.1     0.1     0.2     0.3     1.5        
  MED TN              41     0.3     0.7     1.4     4.5     8.9    13.7        
  MED XJ           3,020     0.1     0.1     0.4     0.8     1.2     4.1        
  MED MTN             87     1.4     4.8    12.6    37.1    56.6   438.1        
  MED KW          88,131     0.1     0.4     1.4     3.7     6.0    14.3        
  MED DATE         3,800     0.0     0.2     0.5     1.0     1.4     3.5        
  MED LANG         3,796     0.0     0.0     0.1     0.6     0.8     1.5        
  MED XXS            862     0.3     1.3     3.0     8.9    16.3    67.5        
  MED XMXS           152     0.2     1.1     2.8     5.1    15.8    41.4        
  MED Other          434     0.0     0.1     0.5     0.6     0.8     2.8        
  FINDs, by index, in seconds (continued)                                       
                                                                                
                                    Commands completed in less than:            
                    No.      25%     50%     75%     90%     95%     99%        
                    ___      ___     ___     ___     ___     ___     ___        
  PE              89,496     0.1     0.2     0.6     1.1     1.7     3.2        
  XPE             28,168     0.0     0.0     0.1     0.2     0.3     0.7        
  PE PA              436     0.0     0.1     0.1     0.2     0.2     0.5        
  PE CA              320     0.1     0.3     0.5     0.8     1.2     2.2        
  PE XC               17     0.1     0.1     0.2     0.3     0.7     0.7        
  PE SU            1,006     0.1     0.1     0.4     1.1     2.0     3.9        
  PE XS               34     0.1     0.1     0.5     1.3     1.5     1.8        
  PE SE               69     0.1     0.1     0.2     0.4     0.5   527.2        
  PE XSE               3     0.1     0.1     0.2     0.2     0.2     0.2        
  PE CODEN             3     0.0     0.0     0.0     0.0     0.0     0.0        
  PE ISSN         13,870     0.0     0.0     0.0     0.0     0.1     0.2        
  PE LCCN              3     0.0     0.1     0.1     0.1     0.1     0.1        
  PE ISBN             19     0.0     0.0     0.1     0.1     1.1     1.1        
  PE RN                3     0.1     0.2     1.1     1.1     1.1     1.1        
  PE STOCK             0     0.0     0.0     0.0     0.0     0.0     0.0        
  PE GD               28     0.0     0.1     0.6     1.5     2.0     2.8        
  PE Other         1,596     0.3     0.4     0.5     0.8     1.0     9.6        
  Multi           67,209     0.3     0.7     2.2     5.1     8.5    27.4        
                                                                                
                                                                                
  BROWSEs, by index, in seconds                                                 
                                    Commands completed in less than:            
                    No.      25%     50%     75%     90%     95%     99%        
                    ___      ___     ___     ___     ___     ___     ___        
  PA                 344     0.2     0.4     1.0     2.5     4.2    20.2        
  CA                  24     0.4     1.0     1.6     2.6     2.9    18.2        
  SU               1,830     0.5     1.5     4.1     8.4    12.0    33.3        
  XCA                  0     0.0     0.0     0.0     0.0     0.0     0.0        
  XS                  81     0.7     1.8     5.9    11.3    17.4   110.6        
  Other               10     0.5     2.0     2.4     5.2     6.8     6.8        
  TEN PA               0     0.0     0.0     0.0     0.0     0.0     0.0        
  TEN CA               0     0.0     0.0     0.0     0.0     0.0     0.0        
  TEN SU              30     0.5     2.6     7.8    10.9    13.9    29.2        
  TEN XCA              0     0.0     0.0     0.0     0.0     0.0     0.0        
  TEN XS               5     0.1     0.2     0.5     1.7     1.7     1.7        
  Ten Other            0     0.0     0.0     0.0     0.0     0.0     0.0        
  MJO                390     0.0     0.1     0.1     0.2     0.3     0.7        
  MED PA             165     0.0     0.0     0.1     0.1     0.2     0.3        
  MED SU           2,557     0.0     0.0     0.1     0.1     0.2     2.1        
  MED XS              88     0.0     0.1     0.1     0.1     0.3     7.8        
  MED TN              49     0.0     0.0     0.0     1.5     1.6     1.6        
  MED XJ              80     0.0     0.0     0.0     0.1     0.1     0.2        
  Multi                0     0.0     0.0     0.0     0.0     0.0     0.0