MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 11/01/99 through 11/30/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 9,811 17,149 26,960
Davis 14,640 1,973 16,613
Irvine 6,221 0 6,221
Los Angeles 2,834 8,819 11,653
Riverside 5,175 1,009 6,184
San Diego 2,650 1,616 4,266
San Francisco 2,125 5 2,130
Santa Barbara 4,451 2,542 6,993
Santa Cruz 4,914 3,105 8,019
LBL 0 512 512
LLL 0 650 650
Other - UC 364 1,738 2,102
CSL 0 793 793
CSU n/a 1,248 1,248
Other-Network UC n/a 29,099 29,099
_______ ______ _____
53,185 70,258 123,443
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2,092 12,212 75,127
2-4 a.m. 1,494 7,117 47,370
4-6 a.m. 1,444 5,896 36,277
6-8 a.m. 2,804 9,156 68,072
8-10 a.m. 12,645 45,131 339,232
10-12 a.m. 21,859 76,566 568,812
12-2 p.m. 22,732 82,705 591,494
2-4 p.m. 26,045 92,753 662,670
4-6 p.m. 17,526 63,919 450,971
6-8 p.m. 6,962 27,288 192,346
8-10 p.m. 4,568 16,303 120,860
10-12 p.m. 3,272 14,878 88,002
__________ __________ __________ _________________
Total: 123,443 453,924 3,241,233
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 27,341 51,800 79,141
Davis 49,864 8,403 58,267
Irvine 17,310 0 17,310
Los Angeles 14,515 31,767 46,282
Riverside 17,119 2,559 19,678
San Diego 7,938 3,163 11,101
San Francisco 3,670 10 3,680
Santa Barbara 17,630 5,916 23,546
Santa Cruz 19,316 20,340 39,656
LBL 0 988 988
LLL 0 1,637 1,637
Other - UC 1,075 18,674 19,749
CSL 0 2,956 2,956
CSU n/a 5,007 5,007
Other-Network UC n/a 124,926 124,926
_______ ______ _____
175,778 278,146 453,924
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 210,192 429,226 639,418
Davis 351,435 40,550 391,985
Irvine 172,364 0 172,364
Los Angeles 81,132 271,376 352,508
Riverside 123,060 31,370 154,430
San Diego 50,028 28,659 78,687
San Francisco 26,276 5 26,281
Santa Barbara 145,913 54,412 200,325
Santa Cruz 74,514 82,017 156,531
LBL 0 12,025 12,025
LLL 0 15,922 15,922
Other - UC 3,234 56,526 59,760
CSL 0 11,378 11,378
CSU n/a 54,500 54,500
Other-Network UC n/a 915,119 915,119
_______ ______ _____
1,238,148 2,003,085 3,241,233
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 4.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.7
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 686:22
Average number of searches completed per session 3.6
Retrievals per search - median 2.0
Retrievals per search - average 91.0
Retrievals per search - standard deviation 1959.6
Percent of searches completed with 0 results 27.8%
Percent of searches entered that are long 4.5%
Percent of long searches completed
(includes partial results) 54.8%
Commands entered, by type, excluding errors:
Total Percentage
FIND 437,092 37.8%
DISPLAY (excluding automatic displays) 338,028 29.3%
ACFIND 419 0.0%
BROWSE 3,675 0.3%
SELECT 1,932 0.2%
HELP 18,099 1.6%
EXPLAIN 15,704 1.4%
SET/RESET 24,101 2.1%
SHOW 4,023 0.3%
AT 20,307 1.8%
ADD ON (AND, OR, AND NOT) 16,311 1.4%
LOGON or LOGOFF 203,443 17.6%
COMMENT 16 0.0%
SAVE 8,264 0.7%
USE 9,944 0.9%
OTHER 54,280 4.7%
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 62,729 13.8% 15,202 24.2% 12 102.7 516.2
AUTHOR 22,010 4.9% 5,298 24.1% 13 121.3 486.3
CORPORATE AUTH 3,765 0.8% 1,528 40.6% 27 699.3 3727.4
EXACT CA 148 0.0% 75 50.7% 62 956.4 2454.5
TITLE WORD 117,365 25.9% 34,478 29.4% 4 47.9 503.8
EXACT TITLE 65,265 14.4% 17,957 27.5% 2 26.0 199.4
TITLE -> TW 10,222 2.3% 2,482 24.3% 9 62.3 259.9
TITLE -> XT 13,003 2.9% 5,494 42.3% 1 11.6 126.5
SUBJECT 41,132 9.1% 17,187 41.8% 56 497.1 4252.2
EXACT SUBJECT 1,669 0.4% 689 41.3% 71 618.4 2512.7
PERIODICAL 65,951 14.6% 14,477 21.9% 5 135.4 1554.0
EXACT PE 23,254 5.1% 3,859 16.6% 3 50.5 817.5
RPE 97 0.0% 59 60.8% 10 22.5 32.1
XRP 5 0.0% 1 20.0% 4 6.3 7.5
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1,015 0.2% 195 19.2% 37 1147.2 10359.2
DATE 7,949 1.8% 1,663 20.9% 2 52.8 437.1
FORM 3,383 0.7% 872 25.8% 15 626.1 4770.9
NUMBER* 213 0.0% 87 40.8% 2 65.6 219.7
MUSIC* 188 0.0% 126 67.0% 4 202.1 934.9
SERIES 7,105 1.6% 2,589 36.4% 4 67.8 262.2
UNIFORM TITLE 195 0.0% 76 39.0% 30 503.8 1322.3
Other indexes 6,440 1.4% 2,881 44.7% 1 26.3 359.7
* 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 24,465 5.7% 6,869 28.1% 3 75.7 1005.4
Single 403,055 94.3% 113,252 28.1% 5 122.1 1626.6
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 898 25.9% 86 9.6% 4 12.3 62.3
CORPORATE AUTH 39 1.1% 5 12.8% 14 98.3 146.4
EXACT CA 9 0.3% 7 77.8% 182 182.0 256.0
SUBJECT 2,354 67.8% 657 27.9% 33 151.1 502.9
EXACT SUBJECT 140 4.0% 34 24.3% 54 164.9 211.5
UNIFORM TITLE 10 0.3% 4 40.0% 5 22.5 36.2
SERIES 22 0.6% 6 27.3% 7 29.5 48.1
By number of indexes:
Multiple 1 0.0% 0 0.0% 367 367.0 0.0
Single 3,514 100% 803 22.8% 9 112.4 497.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 8.3%
BRIEF 75.1%
LONG 8.7%
MARC 3.5%
FIELDS 2.0%
TAG 1.1%
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 9.5%
Ten most frequent errors:
1. First word of command is invalid 29.0%
2. NS command - no next screen 26.0%
3. FIND command with invalid index name 13.5%
4. KW search in database w/o KW index 3.6%
5. DISPLAY command contains invalid word 3.2%
6. Search term missing from search command 2.5%
7. PS command - no previous screen 2.0%
8. Valid command at an inappropriate time 1.8%
9. DISPLAY command - no FIND results 1.5%
10. Index invalid in current database 1.4%
11. All others 15.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.1%
2. FIND 13.6%
3. COMMAND WORDS 7.1%
4. INDEXES 6.8%
5. Unrecognized term 5.0%
6. PASSWORDS 3.4%
7. DISPLAY 2.5%
8. DATABASES 2.2%
9. CATALOG 1.8%
10. ADD-ON SEARCH 1.7%
11. All others 28.8%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 20.5%
2. First word of command is invalid 15.3%
3. FIND command with invalid index name 11.4%
4. DISPLAY command - middle of >1 screen 4.6%
5. FIND command retrieves >1 book 3.0%
6. NS command - no next screen 2.9%
7. KW search in database w/o KW index 2.7%
8. DISPLAY command-first of >1 screen 2.6%
9. TW search with zero results 2.1%
10. DISPLAY command-complete in one screen 2.1%
11. All others 32.8%
Ten most frequent SHOW requests:
1. HISTORY 34.0%
2. SEARCH 16.6%
3. GLOSSARY 9.5%
4. TIME 7.2%
5. SETTINGS 3.9%
6. MAIL STATUS 3.7%
7. MEDLINE NEWS 2.2%
8. BIOSIS NEWS 1.8%
9. SYSTEMS INFORMATION 1.5%
10. SYSTEM NEWS 1.1%
11. All others 18.6%