MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 05/01/99 through 05/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,209 17,306 25,515
Davis 22,994 2,394 25,388
Irvine 9,279 0 9,279
Los Angeles 2,994 7,466 10,460
Riverside 7,936 1,714 9,650
San Diego 2,719 3,770 6,489
San Francisco 2,967 59 3,026
Santa Barbara 8,402 3,000 11,402
Santa Cruz 7,335 4,209 11,544
LBL 0 733 733
LLL 0 716 716
Other - UC 348 1,582 1,930
CSL 0 953 953
CSU n/a 1,562 1,562
Other-Network UC n/a 30,937 30,937
_______ ______ _____
73,183 76,401 149,584
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2,748 12,987 84,335
2-4 a.m. 1,631 10,072 68,278
4-6 a.m. 1,355 6,489 40,542
6-8 a.m. 3,071 8,857 73,352
8-10 a.m. 14,154 46,140 322,845
10-12 a.m. 25,034 79,777 567,065
12-2 p.m. 27,205 81,125 605,781
2-4 p.m. 32,126 96,022 715,577
4-6 p.m. 21,359 62,708 458,370
6-8 p.m. 9,408 25,834 200,817
8-10 p.m. 6,937 19,660 145,819
10-12 p.m. 4,556 14,912 109,740
__________ __________ __________ _________________
Total: 149,584 464,583 3,392,521
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 25,239 46,705 71,944
Davis 81,388 9,865 91,253
Irvine 24,463 0 24,463
Los Angeles 5,953 15,564 21,517
Riverside 25,848 3,363 29,211
San Diego 7,053 7,738 14,791
San Francisco 5,263 98 5,361
Santa Barbara 29,315 6,607 35,922
Santa Cruz 16,583 15,172 31,755
LBL 0 1,400 1,400
LLL 0 1,722 1,722
Other - UC 241 4,238 4,479
CSL 0 2,272 2,272
CSU n/a 5,427 5,427
Other-Network UC n/a 123,066 123,066
_______ ______ _____
221,346 243,237 464,583
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 203,481 377,818 581,299
Davis 522,731 48,211 570,942
Irvine 178,224 0 178,224
Los Angeles 48,933 137,241 186,174
Riverside 166,468 38,634 205,102
San Diego 43,308 64,679 107,987
San Francisco 34,761 828 35,589
Santa Barbara 250,598 64,421 315,019
Santa Cruz 98,747 91,782 190,529
LBL 0 14,988 14,988
LLL 0 15,811 15,811
Other - UC 1,982 37,134 39,116
CSL 0 14,645 14,645
CSU n/a 48,567 48,567
Other-Network UC n/a 888,529 888,529
_______ ______ _____
1,549,233 1,843,288 3,392,521
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 3.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.8
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1088
Average number of searches completed per session 3.0
Retrievals per search - median 2.0
Retrievals per search - average 91.7
Retrievals per search - standard deviation 1593.4
Percent of searches completed with 0 results 30.5%
Percent of searches entered that are long 4.9%
Percent of long searches completed
(includes partial results) 52.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 450,713 35.0%
DISPLAY (excluding automatic displays) 375,995 29.2%
ACFIND 66 0.0%
BROWSE 2,257 0.2%
SELECT 1,734 0.1%
HELP 21,685 1.7%
EXPLAIN 17,682 1.4%
SET/RESET 25,084 1.9%
SHOW 4,712 0.4%
AT 22,994 1.8%
ADD ON (AND, OR, AND NOT) 13,704 1.1%
LOGON or LOGOFF 247,669 19.2%
COMMENT 1,707 0.1%
SAVE 11,239 0.9%
USE 17,875 1.4%
OTHER 71,551 5.6%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 65,441 14.1% 16,635 25.4% 12 98.9 479.6
AUTHOR 28,056 6.0% 6,732 24.0% 13 118.4 458.2
CORPORATE AUTH 5,194 1.1% 1,966 37.8% 12 381.9 2438.8
EXACT CA 125 0.0% 71 56.8% 50 320.5 607.7
TITLE WORD 121,489 26.2% 39,335 32.4% 5 52.6 856.8
EXACT TITLE 53,433 11.5% 18,171 34.0% 2 29.7 183.1
TITLE -> TW 11,179 2.4% 2,608 23.3% 7 61.6 741.2
TITLE -> XT 10,867 2.3% 5,037 46.3% 1 11.3 105.5
SUBJECT 54,685 11.8% 22,964 42.0% 54 501.2 4430.8
EXACT SUBJECT 2,500 0.5% 1,017 40.7% 79 532.2 1273.2
PERIODICAL 62,754 13.5% 15,072 24.0% 5 138.2 1502.7
EXACT PE 22,260 4.8% 3,795 17.0% 3 41.6 642.2
RPE 48 0.0% 28 58.3% 7 26.3 51.9
XRP 17 0.0% 5 29.4% 46 77.3 92.4
COMMENTS 57 0.0% 24 42.1% 207 1436.9 1892.2
LANGUAGE 1,616 0.3% 372 23.0% 31 553.7 4659.0
DATE 6,332 1.4% 1,446 22.8% 5 79.5 615.1
FORM 3,206 0.7% 752 23.5% 18 326.9 3522.3
NUMBER* 566 0.1% 242 42.8% 1 94.5 1389.6
MUSIC* 90 0.0% 54 60.0% 17 318.5 732.7
SERIES 6,893 1.5% 2,620 38.0% 6 79.7 412.0
UNIFORM TITLE 153 0.0% 72 47.1% 26 317.8 900.3
Other indexes 7,293 1.6% 2,751 37.7% 1 15.7 192.1
* Number indexes include REPORT NUMBER STOCK NUMBER,
GOVERNMENT DOCUMENTS, and GPO ITEM NUMBER;
Music indexes include MUSICAL KEY, MUSIC PUBLISHER, and THEMATIC
By number of indexes:
Multiple 23,053 5.2% 6,917 30.0% 4 74.3 576.3
Single 416,949 94.8% 127,689 30.6% 6 133.4 1762.1
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 204 9.9% 37 18.1% 6 36.7 80.0
CORPORATE AUTH 38 1.8% 8 21.1% 5 38.1 68.8
EXACT CA 2 0.1% 1 50.0% 13 13.0 0.0
SUBJECT 1,679 81.2% 480 28.6% 37 178.2 746.7
EXACT SUBJECT 114 5.5% 27 23.7% 25 75.9 108.2
UNIFORM TITLE 6 0.3% 2 33.3% 8 48.5 85.8
SERIES 24 1.2% 5 20.8% 6 16.0 26.6
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 2,123 100% 566 26.7% 26 148.6 659.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 8.4%
BRIEF 73.7%
LONG 8.9%
MARC 3.8%
FIELDS 2.6%
TAG 1.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.2%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 10.0%
Ten most frequent errors:
1. First word of command is invalid 29.8%
2. NS command - no next screen 25.3%
3. FIND command with invalid index name 12.7%
4. KW search in database w/o KW index 4.8%
5. DISPLAY command contains invalid word 3.0%
6. Search term missing from search command 2.5%
7. PS command - no previous screen 1.8%
8. Valid command at an inappropriate time 1.8%
9. DISPLAY command - no FIND results 1.7%
10. Index invalid in current database 1.5%
11. All others 15.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 25.9%
2. FIND 14.3%
3. INDEXES 6.8%
4. COMMAND WORDS 6.7%
5. Unrecognized term 5.1%
6. DISPLAY 3.2%
7. PASSWORDS 3.0%
8. DATABASES 2.5%
9. ADD-ON SEARCH 2.0%
10. LOCATE (PE DB) 1.8%
11. All others 28.7%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 19.5%
2. First word of command is invalid 15.4%
3. FIND command with invalid index name 11.2%
4. DISPLAY command - middle of >1 screen 4.3%
5. KW search in database w/o KW index 3.6%
6. NS command - no next screen 3.3%
7. FIND command retrieves >1 book 2.8%
8. DISPLAY command-first of >1 screen 2.7%
9. TW search with zero results 2.4%
10. DISPLAY command-complete in one screen 2.2%
11. All others 32.5%
Ten most frequent SHOW requests:
1. HISTORY 24.8%
2. SEARCH 16.8%
3. TIME 11.6%
4. GLOSSARY 10.2%
5. NEWS 6.8%
6. SETTINGS 4.0%
7. MAIL STATUS 3.7%
8. SYSTEM NEWS 1.4%
9. 8520 1.4%
10. PSYCINFO NEWS 1.3%
11. All others 18.0%