MELVYL SYSTEM TELNET RESPONSE TIME
                 Time period: 12/01/99 through 12/31/99


1.0  OVERALL RESPONSE TIME:
___________________________

  For a total of  1,492,027 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    1.6 seconds.
     99% completed in less than    6.3 seconds.

1.1 BY TIME OF DAY, IN SECONDS:
_______________________________
                                    All commands completed in less than*
                    No.      25%     50%     75%     90%     95%     99%
                    ___      ___     ___     ___     ___     ___     ___
  Prime Time    1,057,984    0.0     0.1     0.3     0.8     1.6     6.5
  (10am-6pm)

  Non-Prime Time  434,043    0.0     0.1     0.3     0.7     1.4     5.5
  (6pm-10am)


  In two hour intervals:
                                    All commands completed in less than*
                    No.      25%     50%     75%     90%     95%     99%
                    ___      ___     ___     ___     ___     ___     ___

    12-2am        28,342     0.0     0.1     0.3     0.6     1.2     5.0
    2-4am         16,823     0.0     0.1     0.3     0.6     1.1     4.5
    4-6am         13,213     0.0     0.1     0.2     0.6     1.1     4.3
    6-8am         30,712     0.0     0.1     0.2     0.6     1.2     4.6
    8-10am       155,390     0.0     0.1     0.3     0.8     1.5     6.1
    10-12am      275,731     0.0     0.1     0.3     0.9     1.8     7.2
    12-2pm       268,795     0.0     0.1     0.3     0.8     1.6     6.4
    2-4pm        313,197     0.0     0.1     0.3     0.8     1.6     6.4
    4-6pm        200,261     0.0     0.1     0.3     0.7     1.5     6.2
    6-8pm         87,087     0.0     0.1     0.3     0.7     1.4     5.6
    8-10pm        59,372     0.0     0.1     0.3     0.7     1.4     5.5
    10-12pm       43,104     0.0     0.1     0.2     0.6     1.2     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           552,766     0.1     0.2     0.6     1.8     3.3    11.2
  DISPLAY        814,445     0.1     0.2     0.3     0.5     0.7     1.4
  BROWSE           2,547     0.0     0.1     1.3     5.2     9.4    24.1
  SELECT             345     0.0     0.0     0.1     0.1     0.3     6.3
  HELP            23,179     0.0     0.0     0.0     0.0     7.0    40.7
  EXPLAIN         22,311     0.0     0.0     0.0     0.0     0.0     0.0
  SET             73,166     0.0     0.0     0.0     0.6     1.9     5.0
  SHOW             6,104     0.0     0.0     0.0     0.0     0.0     0.1
  LOGON          114,285     2.6     6.1    13.0    25.6    42.1   195.9
  LOGOFF          12,808     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              32,851     0.1     0.1     0.3     0.6     1.0     2.9
  CA               2,176     0.1     0.2     0.6     1.2     2.3     5.4
  AU              12,827     0.1     0.1     0.3     0.7     1.3     4.1
  TW              49,651     0.1     0.4     1.3     2.9     4.5    15.4
  SU              17,287     0.1     0.2     0.6     1.7     2.8     6.9
  XCA                 90     0.1     0.1     0.2     0.3     0.7     5.6
  XT              26,129     0.0     0.1     0.1     0.1     0.2     0.4
  XS                 890     0.1     0.1     0.3     1.3     2.1     5.3
  TI->XT           5,599     0.0     0.1     0.1     0.1     0.1     0.3
  TI->TW           5,600     0.1     0.4     1.2     2.7     4.1    12.9
  Catalog Other    9,602     0.0     0.1     0.7     2.1     3.3     7.3
  TEN PA          15,269     0.4     0.7     1.0     2.6     6.3    17.7
  TEN CA              16     0.4     0.5     1.0     2.3     2.9     2.9
  TEN AU               0     0.0     0.0     0.0     0.0     0.0     0.0
  TEN TW              25     0.3     0.4     0.5     0.9     1.7     2.4
  TEN SU           3,909     0.3     0.5     0.7     1.2     1.8     4.1
  TEN XCA              0     0.0     0.0     0.0     0.0     0.0     0.0
  TEN XT               9     0.6     0.6     2.0     9.8     9.8     9.8
  TEN XS              18     0.2     0.4     0.7     1.9     2.3     2.3
  TEN TI->XT           0     0.0     0.0     0.0     0.0     0.0     0.0
  TEN TI->TW           0     0.0     0.0     0.0     0.0     0.0     0.0
  TEN Other        5,688     0.2     0.4     0.7     1.4     2.1     5.7
  COMMENT          5,111     0.3     0.5     0.8     1.4     2.3     7.1
  MJO              3,626     0.1     0.2     0.7     2.4     4.5    12.5
  MED PA          29,084     0.1     0.1     0.1     0.3     0.6     2.4
  MED TW           9,616     0.1     0.2     0.7     1.6     2.6     7.6
  MED SW             136     0.1     0.3     1.3     4.5     9.3    11.1
  MED SU           2,641     0.1     0.2     1.3     3.2     5.6    11.9
  MED MSU            285     0.1     0.2     1.0     1.9     2.9     4.8
  MED XS           1,180     0.1     0.4     1.1     2.6     4.6    12.1
  MED MXS          1,741     0.2     0.3     0.7     1.3     1.8     6.7
  MED XT             907     0.1     0.1     0.1     0.2     0.3     0.9
  MED TN              50     0.3     0.6     0.8     1.1     1.5     5.7
  MED XJ           3,196     0.1     0.3     0.7     0.8     1.2     2.1
  MED MTN             46     0.4     1.3     5.4    12.5    69.3   264.3
  MED KW          38,653     0.1     0.5     2.0     5.2     8.4    18.1
  MED DATE         2,302     0.0     0.1     0.3     0.7     1.0     2.6
  MED LANG         1,937     0.0     0.0     0.1     0.4     0.7     1.2
  MED XXS            517     0.3     1.3     3.9    10.0    19.7    69.0
  MED XMXS            35     0.2     0.3     2.0    11.6    19.0    39.9
  MED Other          252     0.0     0.1     0.4     0.6     0.7     1.4
  FINDs, by index, in seconds (continued)

                                    Commands completed in less than:
                    No.      25%     50%     75%     90%     95%     99%
                    ___      ___     ___     ___     ___     ___     ___
  PE              54,927     0.1     0.2     0.5     1.0     1.4     2.7
  XPE             15,188     0.0     0.0     0.1     0.1     0.1     0.3
  PE PA              190     0.0     0.1     0.1     0.1     0.2     0.8
  PE CA              145     0.1     0.2     0.4     0.6     0.9     1.3
  PE XC               18     0.1     0.1     0.1     0.5     0.9     0.9
  PE SU              401     0.1     0.1     0.4     0.8     1.6     2.8
  PE XS               34     0.1     0.1     0.5     0.8     1.2     1.3
  PE SE               69     0.1     0.1     0.1     0.2     0.2     1.7
  PE XSE               4     0.1     0.1     0.1     0.1     0.1     0.1
  PE CODEN             3     0.0     0.0     0.0     0.0     0.0     0.0
  PE ISSN          1,943     0.0     0.0     0.0     0.1     0.1     0.1
  PE LCCN              4     0.1     0.1     0.2     0.3     0.3     0.3
  PE ISBN              7     0.0     0.1     0.1     0.3     0.3     0.3
  PE RN                0     0.0     0.0     0.0     0.0     0.0     0.0
  PE STOCK             0     0.0     0.0     0.0     0.0     0.0     0.0
  PE GD               11     0.0     0.0     0.0     0.0     0.1     0.1
  PE Other         1,479     0.2     0.3     0.4     0.7     1.3     4.4
  Multi           38,034     0.2     0.6     1.7     4.4     7.3    22.8


  BROWSEs, by index, in seconds
                                    Commands completed in less than:
                    No.      25%     50%     75%     90%     95%     99%
                    ___      ___     ___     ___     ___     ___     ___
  PA                 174     0.2     0.4     1.2     4.2     6.8    13.4
  CA                  10     0.3     1.1     1.6    10.6    18.8    18.8
  SU                 876     0.6     1.8     5.0    10.1    14.8    40.0
  XCA                  1     2.5     2.5     2.5     2.5     2.5     2.5
  XS                  84     0.4     1.6     4.3     8.6    11.0    43.4
  Other                9     0.2     1.1     4.2    12.7    12.7    12.7
  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               0     0.0     0.0     0.0     0.0     0.0     0.0
  TEN XCA              0     0.0     0.0     0.0     0.0     0.0     0.0
  TEN XS               0     0.0     0.0     0.0     0.0     0.0     0.0
  Ten Other            0     0.0     0.0     0.0     0.0     0.0     0.0
  MJO                243     0.0     0.1     0.1     0.2     0.3     0.4
  MED PA              56     0.0     0.0     0.1     0.1     0.2     0.4
  MED SU             828     0.0     0.1     0.1     0.1     0.2     3.6
  MED XS              62     0.0     0.1     0.1     0.1     0.1     0.1
  MED TN               0     0.0     0.0     0.0     0.0     0.0     0.0
  MED XJ              54     0.0     0.0     0.1     0.1     0.1     0.2
  Multi                2    16.6    24.2    31.8    31.8    31.8    31.8
RTmm/dd  rt       MELVYL SYSTEM TELNET RESPONSE TIME (weekly)