MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 06/22/02 through 06/28/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 325 1,267 1,592
Davis 807 101 908
Irvine 227 0 227
Los Angeles 10 273 283
Riverside 260 44 304
San Diego 232 71 303
San Francisco 100 0 100
Santa Barbara 168 35 203
Santa Cruz 99 82 181
LBL 0 62 62
LLL 0 21 21
Other - UC 25 120 145
CSL 0 42 42
CSU n/a 86 86
Other-Non-UC n/a 2,091 2,091
_______ ______ _____
2,253 4,295 6,548
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 109 350 4,009
2-4 a.m. 95 304 2,516
4-6 a.m. 71 206 2,001
6-8 a.m. 186 476 4,258
8-10 a.m. 847 3,421 21,845
10-12 a.m. 1,291 5,045 32,824
12-2 p.m. 1,264 5,523 34,470
2-4 p.m. 1,358 5,473 36,129
4-6 p.m. 828 3,352 23,617
6-8 p.m. 222 1,070 6,443
8-10 p.m. 138 549 5,326
10-12 p.m. 139 630 7,277
__________ __________ __________ _________________
Total: 6,548 26,399 180,715
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 882 4,294 5,176
Davis 2,952 607 3,559
Irvine 1,048 0 1,048
Los Angeles 10 665 675
Riverside 1,346 96 1,442
San Diego 668 166 834
San Francisco 325 0 325
Santa Barbara 858 84 942
Santa Cruz 2,408 151 2,559
LBL 0 87 87
LLL 0 58 58
Other - UC 50 263 313
CSL 0 70 70
CSU n/a 341 341
Other-Non-UC n/a 8,970 8,970
_______ ______ _____
10,547 15,852 26,399
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,124 33,251 38,375
Davis 19,186 2,825 22,011
Irvine 9,127 0 9,127
Los Angeles 134 5,237 5,371
Riverside 5,531 603 6,134
San Diego 3,972 1,138 5,110
San Francisco 2,900 0 2,900
Santa Barbara 7,285 1,781 9,066
Santa Cruz 3,660 943 4,603
LBL 0 735 735
LLL 0 543 543
Other - UC 279 1,249 1,528
CSL 0 447 447
CSU n/a 2,873 2,873
Other-Non-UC n/a 71,892 71,892
_______ ______ _____
57,198 123,517 180,715
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 2.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.6
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:25
Average session length (minutes:seconds) 16:50
Longest session recorded (minutes:seconds) 631:06
Average number of searches completed per session 4.0
Retrievals per search - median 2.0
Retrievals per search - average 62.3
Retrievals per search - standard deviation 827.1
Percent of searches completed with 0 results 24.8%
Percent of searches entered that are long 3.0%
Percent of long searches completed
(includes partial results) 64.2%
Commands entered, by type, excluding errors:
Total Percentage
FIND 25,039 37.1%
DISPLAY (excluding automatic displays) 22,498 33.3%
ACFIND 18 0.0%
BROWSE 143 0.2%
SELECT 70 0.1%
HELP 318 0.5%
EXPLAIN 350 0.5%
SET/RESET 1,259 1.9%
SHOW 155 0.2%
AT 1,397 2.1%
ADD ON (AND, OR, AND NOT) 1,334 2.0%
LOGON or LOGOFF 11,534 17.1%
COMMENT 0 0.0%
SAVE 373 0.6%
USE 456 0.7%
OTHER 2,630 3.9%
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 3,226 12.5% 739 22.9% 11 96.2 695.1
AUTHOR 783 3.0% 181 23.1% 9 79.1 242.7
CORPORATE AUTH 271 1.1% 95 35.1% 19 273.7 822.5
EXACT CA 3 0.0% 2 66.7% 3 3.0 0.0
TITLE WORD 5,071 19.7% 1,600 31.6% 4 59.5 926.5
EXACT TITLE 4,924 19.1% 1,107 22.5% 2 20.3 129.4
TITLE -> TW 606 2.4% 152 25.1% 7 44.6 90.5
TITLE -> XT 884 3.4% 402 45.5% 1 5.5 18.2
SUBJECT 918 3.6% 306 33.3% 54 532.7 3031.3
EXACT SUBJECT 51 0.2% 10 19.6% 200 696.2 999.3
PERIODICAL 5,487 21.3% 1,150 21.0% 4 72.1 966.0
EXACT PE 1,924 7.5% 235 12.2% 2 12.8 62.4
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 107 0.4% 19 17.8% 61 2939.8 7309.9
DATE 285 1.1% 52 18.2% 4 57.9 285.2
FORM 86 0.3% 19 22.1% 14 84.9 148.6
NUMBER* 39 0.2% 19 48.7% 2 21.3 62.0
MUSIC* 1 0.0% 0 0.0% 38 38.0 0.0
SERIES 630 2.4% 213 33.8% 3 55.5 131.1
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 447 1.7% 177 39.6% 1 22.3 168.5
* 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 944 3.8% 227 24.0% 3 102.8 1714.5
Single 23,809 96.2% 6,007 25.2% 4 83.7 932.4
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 7 5.1% 2 28.6% 6 37.4 70.4
CORPORATE AUTH 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 125 91.2% 26 20.8% 44 133.2 268.1
EXACT SUBJECT 1 0.7% 0 0.0% 176 176.0 0.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 4 2.9% 0 0.0% 6 49.5 87.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 137 100% 28 20.4% 30 126.1 257.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.7%
BRIEF 69.7%
LONG 8.3%
MARC 4.1%
FIELDS 2.9%
TAG 2.1%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.2%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.4%
Ten most frequent errors:
1. NS command - no next screen 33.8%
2. First word of command is invalid 25.4%
3. FIND command with invalid index name 11.5%
4. DISPLAY command contains invalid word 4.8%
5. Search term missing from search command 2.5%
6. PS command - no previous screen 1.9%
7. Valid command at an inappropriate time 1.8%
8. DISPLAY command - no FIND results 1.7%
9. KW search in database w/o KW index 1.3%
10. Command contains escape or arrow key 1.1%
11. All others 14.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 29.7%
2. FIND 15.4%
3. INDEXES 6.6%
4. COMMAND WORDS 5.4%
5. Unrecognized term 4.9%
6. DISPLAY 2.6%
7. PASSWORDS 2.3%
8. DATES 2.0%
9. LOCATE (PE DB) 2.0%
10. NRLF 1.7%
11. All others 27.4%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.0%
2. First word of command is invalid 14.1%
3. FIND command with invalid index name 14.1%
4. NS command - no next screen 2.2%
5. DISPLAY command-complete in one screen 2.2%
6. DISPLAY command - middle of >1 screen 2.2%
7. DISPLAY command - last of >1 screen 2.2%
8. Help requested from SET DB command 2.1%
9. NS of SHOW/EXP command-no next screen 2.1%
10. DISPLAY command-first of >1 screen 1.9%
11. All others 31.7%
Ten most frequent SHOW requests:
1. HISTORY 39.9%
2. DATABASE NEWS 7.8%
3. GLOSSARY 7.2%
4. MAIL STATUS 4.6%
5. SEARCH 3.9%
6. NEWS 3.3%
7. SETTINGS 3.3%
8. DATABASES 3.3%
9. 0210 1.3%
10. PE LOADING STATISTICS 1.3%
11. All others 24.2%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)