MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 01/12/02 through 01/18/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 463 1,914 2,377
Davis 1,597 199 1,796
Irvine 386 0 386
Los Angeles 21 469 490
Riverside 379 72 451
San Diego 407 150 557
San Francisco 153 0 153
Santa Barbara 239 116 355
Santa Cruz 191 173 364
LBL 0 93 93
LLL 0 47 47
Other - UC 41 147 188
CSL 0 150 150
CSU n/a 116 116
Other-Non-UC n/a 3,675 3,675
_______ ______ _____
3,877 7,321 11,198
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 203 730 6,167
2-4 a.m. 155 485 4,252
4-6 a.m. 169 495 3,870
6-8 a.m. 361 920 7,400
8-10 a.m. 1,425 4,786 32,552
10-12 a.m. 2,287 7,922 60,835
12-2 p.m. 2,051 6,874 49,048
2-4 p.m. 2,346 8,129 62,012
4-6 p.m. 1,287 5,121 37,877
6-8 p.m. 438 1,685 15,693
8-10 p.m. 226 881 9,293
10-12 p.m. 250 759 7,335
__________ __________ __________ _________________
Total: 11,198 38,787 296,334
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,194 5,156 6,350
Davis 5,892 791 6,683
Irvine 2,398 0 2,398
Los Angeles 213 984 1,197
Riverside 1,409 204 1,613
San Diego 982 338 1,320
San Francisco 473 0 473
Santa Barbara 1,131 232 1,363
Santa Cruz 1,304 526 1,830
LBL 0 141 141
LLL 0 130 130
Other - UC 19 433 452
CSL 0 144 144
CSU n/a 393 393
Other-Non-UC n/a 14,300 14,300
_______ ______ _____
15,015 23,772 38,787
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,426 44,376 52,802
Davis 34,592 4,290 38,882
Irvine 13,835 0 13,835
Los Angeles 2,622 8,650 11,272
Riverside 10,678 1,229 11,907
San Diego 6,809 3,002 9,811
San Francisco 4,333 0 4,333
Santa Barbara 9,925 1,702 11,627
Santa Cruz 5,853 3,609 9,462
LBL 0 1,254 1,254
LLL 0 933 933
Other - UC 274 4,130 4,404
CSL 0 1,047 1,047
CSU n/a 5,283 5,283
Other-Non-UC n/a 119,482 119,482
_______ ______ _____
97,347 198,987 296,334
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 3.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:16
Average session length (minutes:seconds) 15:18
Longest session recorded (minutes:seconds) 1060
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 57.6
Retrievals per search - standard deviation 1494.7
Percent of searches completed with 0 results 27.6%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 63.8%
Commands entered, by type, excluding errors:
Total Percentage
FIND 37,523 35.3%
DISPLAY (excluding automatic displays) 35,891 33.8%
ACFIND 2 0.0%
BROWSE 271 0.3%
SELECT 145 0.1%
HELP 562 0.5%
EXPLAIN 607 0.6%
SET/RESET 2,133 2.0%
SHOW 177 0.2%
AT 2,612 2.5%
ADD ON (AND, OR, AND NOT) 1,256 1.2%
LOGON or LOGOFF 19,337 18.2%
COMMENT 0 0.0%
SAVE 588 0.6%
USE 912 0.9%
OTHER 4,185 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 5,795 14.8% 1,354 23.4% 10 80.7 374.7
AUTHOR 1,502 3.8% 372 24.8% 10 102.3 482.3
CORPORATE AUTH 456 1.2% 158 34.6% 20 307.7 1011.3
EXACT CA 7 0.0% 3 42.9% 944 931.0 1045.2
TITLE WORD 9,148 23.3% 3,032 33.1% 4 32.1 108.3
EXACT TITLE 6,035 15.4% 1,847 30.6% 2 26.7 185.2
TITLE -> TW 817 2.1% 198 24.2% 7 48.5 135.5
TITLE -> XT 991 2.5% 430 43.4% 1 19.1 197.6
SUBJECT 1,404 3.6% 493 35.1% 45 673.5 8960.1
EXACT SUBJECT 77 0.2% 19 24.7% 27 185.2 374.0
PERIODICAL 7,542 19.2% 1,615 21.4% 5 74.6 1026.0
EXACT PE 2,624 6.7% 396 15.1% 2 42.6 1199.8
RPE 5 0.0% 0 0.0% 2 2.6 0.9
XRP 8 0.0% 1 12.5% 3 2.9 0.7
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 65 0.2% 8 12.3% 70 135.8 235.5
DATE 441 1.1% 108 24.5% 5 148.5 1577.2
FORM 271 0.7% 58 21.4% 21 105.5 237.4
NUMBER* 32 0.1% 14 43.8% 5 372.1 1144.9
MUSIC* 10 0.0% 8 80.0% 3 3.0 1.4
SERIES 961 2.5% 303 31.5% 4 39.6 94.7
UNIFORM TITLE 6 0.0% 4 66.7% 1,726 1726.0 2439.5
Other indexes 991 2.5% 452 45.6% 1 11.1 163.9
* 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 2,031 5.5% 569 28.0% 3 36.9 148.1
Single 35,037 94.5% 9,724 27.8% 4 82.4 1834.2
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 12 4.8% 1 8.3% 9 198.0 335.0
CORPORATE AUTH 2 0.8% 0 0.0% 37 37.0 41.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 227 90.4% 58 25.5% 52 161.2 393.9
EXACT SUBJECT 9 3.6% 2 22.2% 29 134.6 150.9
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.4% 0 0.0% 25 25.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 258 100% 62 24.0% 42 155.5 375.8
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.8%
BRIEF 65.2%
LONG 10.5%
MARC 4.9%
FIELDS 3.0%
TAG 2.8%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.8%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.6%
Ten most frequent errors:
1. NS command - no next screen 33.7%
2. First word of command is invalid 24.4%
3. FIND command with invalid index name 11.2%
4. DISPLAY command contains invalid word 4.1%
5. Search term missing from search command 2.6%
6. PS command - no previous screen 2.1%
7. Valid command at an inappropriate time 1.6%
8. DISPLAY command - no FIND results 1.6%
9. KW search in database w/o KW index 1.6%
10. 1281 1.3%
11. All others 15.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 25.5%
2. FIND 13.7%
3. COMMAND WORDS 6.6%
4. INDEXES 6.3%
5. Unrecognized term 4.3%
6. DATABASES 3.5%
7. DISPLAY 3.3%
8. 3190 3.3%
9. PASSWORDS 3.1%
10. NRLF 2.1%
11. All others 28.3%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 29.6%
2. FIND command with invalid index name 10.9%
3. First word of command is invalid 10.8%
4. DISPLAY command-first of >1 screen 3.5%
5. DISPLAY command - middle of >1 screen 3.4%
6. 1281 2.7%
7. KW search in database w/o KW index 2.4%
8. NS command - no next screen 2.1%
9. TW search with zero results 2.1%
10. FIND command retrieves >1 book 2.1%
11. All others 30.5%
Ten most frequent SHOW requests:
1. HISTORY 48.8%
2. DATABASE NEWS 10.2%
3. SEARCH 9.0%
4. GLOSSARY 7.8%
5. SETTINGS 3.0%
6. PE LOADING STATISTICS 3.0%
7. BOOK STATISTICS 2.4%
8. FORM NAMES 1.8%
9. STATISTICS 1.8%
10. 2292 1.2%
11. All others 10.8%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)