MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 08/25/01 through 08/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 659 2,450 3,109
Davis 1,425 209 1,634
Irvine 628 0 628
Los Angeles 7 398 405
Riverside 394 56 450
San Diego 400 131 531
San Francisco 247 0 247
Santa Barbara 160 96 256
Santa Cruz 223 141 364
LBL 0 90 90
LLL 0 45 45
Other - UC 58 193 251
CSL 0 124 124
CSU n/a 139 139
Other-Non-UC n/a 3,797 3,797
_______ ______ _____
4,201 7,869 12,070
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 206 747 6,612
2-4 a.m. 171 543 3,349
4-6 a.m. 159 384 1,832
6-8 a.m. 406 1,219 9,314
8-10 a.m. 1,619 5,220 35,919
10-12 a.m. 2,355 7,483 62,496
12-2 p.m. 2,122 6,684 56,569
2-4 p.m. 2,443 8,361 59,244
4-6 p.m. 1,446 5,560 37,253
6-8 p.m. 518 1,522 11,097
8-10 p.m. 335 798 5,690
10-12 p.m. 290 1,227 9,125
__________ __________ __________ _________________
Total: 12,070 39,748 298,500
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,666 7,365 9,031
Davis 4,836 915 5,751
Irvine 2,738 0 2,738
Los Angeles 37 872 909
Riverside 1,306 135 1,441
San Diego 2,151 259 2,410
San Francisco 979 0 979
Santa Barbara 440 219 659
Santa Cruz 1,682 355 2,037
LBL 0 134 134
LLL 0 89 89
Other - UC 33 487 520
CSL 0 236 236
CSU n/a 460 460
Other-Non-UC n/a 12,354 12,354
_______ ______ _____
15,868 23,880 39,748
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 14,834 60,340 75,174
Davis 35,672 4,397 40,069
Irvine 21,518 0 21,518
Los Angeles 1,798 6,792 8,590
Riverside 8,390 1,470 9,860
San Diego 8,098 1,886 9,984
San Francisco 4,115 0 4,115
Santa Barbara 5,192 4,463 9,655
Santa Cruz 8,027 3,210 11,237
LBL 0 1,020 1,020
LLL 0 1,707 1,707
Other - UC 251 3,249 3,500
CSL 0 1,908 1,908
CSU n/a 7,165 7,165
Other-Non-UC n/a 92,998 92,998
_______ ______ _____
107,895 190,605 298,500
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 4.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.6
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:29
Average session length (minutes:seconds) 14:11
Longest session recorded (minutes:seconds) 1189
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 57.3
Retrievals per search - standard deviation 590.7
Percent of searches completed with 0 results 25.3%
Percent of searches entered that are long 3.6%
Percent of long searches completed
(includes partial results) 61.8%
Commands entered, by type, excluding errors:
Total Percentage
FIND 37,933 35.4%
DISPLAY (excluding automatic displays) 34,937 32.6%
ACFIND 2 0.0%
BROWSE 238 0.2%
SELECT 124 0.1%
HELP 649 0.6%
EXPLAIN 673 0.6%
SET/RESET 3,203 3.0%
SHOW 188 0.2%
AT 2,291 2.1%
ADD ON (AND, OR, AND NOT) 1,798 1.7%
LOGON or LOGOFF 19,287 18.0%
COMMENT 1 0.0%
SAVE 722 0.7%
USE 777 0.7%
OTHER 4,427 4.1%
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 5,766 14.6% 1,427 24.7% 10 78.3 278.4
AUTHOR 1,384 3.5% 369 26.7% 15 132.3 669.5
CORPORATE AUTH 384 1.0% 131 34.1% 16 527.1 2089.9
EXACT CA 7 0.0% 3 42.9% 336 722.3 910.7
TITLE WORD 9,618 24.4% 2,671 27.8% 4 42.2 274.7
EXACT TITLE 5,861 14.8% 1,590 27.1% 2 17.9 107.5
TITLE -> TW 959 2.4% 238 24.8% 9 56.7 129.3
TITLE -> XT 1,306 3.3% 541 41.4% 1 7.4 40.6
SUBJECT 1,642 4.2% 548 33.4% 41 434.7 1852.5
EXACT SUBJECT 114 0.3% 27 23.7% 44 269.8 554.2
PERIODICAL 6,773 17.2% 1,272 18.8% 5 83.7 963.8
EXACT PE 2,685 6.8% 507 18.9% 3 55.4 752.3
RPE 2 0.0% 1 50.0% 28 28.0 0.0
XRP 1 0.0% 0 0.0% 11 11.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 59 0.1% 10 16.9% 40 541.2 1821.2
DATE 604 1.5% 123 20.4% 4 50.9 265.5
FORM 489 1.2% 116 23.7% 15 135.7 485.4
NUMBER* 15 0.0% 3 20.0% 6 179.8 526.2
MUSIC* 25 0.1% 13 52.0% 422 705.3 1130.5
SERIES 1,048 2.7% 313 29.9% 2 32.7 146.3
UNIFORM TITLE 9 0.0% 3 33.3% 370 367.2 398.6
Other indexes 734 1.9% 247 33.6% 1 10.3 93.3
* 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 1,943 5.2% 525 27.0% 4 57.1 277.4
Single 35,450 94.8% 9,072 25.6% 4 78.5 699.2
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 8 3.8% 0 0.0% 41 90.3 134.9
CORPORATE AUTH 1 0.5% 0 0.0% 1 1.0 0.0
EXACT CA 1 0.5% 0 0.0% 1 1.0 0.0
SUBJECT 184 87.6% 35 19.0% 55 174.0 628.0
EXACT SUBJECT 16 7.6% 5 31.3% 8 54.5 84.2
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 224 100% 43 19.2% 37 151.5 572.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.2%
BRIEF 67.1%
LONG 9.2%
MARC 3.8%
FIELDS 2.8%
TAG 3.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.5%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.1%
Ten most frequent errors:
1. NS command - no next screen 33.2%
2. First word of command is invalid 24.5%
3. FIND command with invalid index name 11.3%
4. DISPLAY command contains invalid word 4.5%
5. Search term missing from search command 2.7%
6. PS command - no previous screen 2.1%
7. KW search in database w/o KW index 1.7%
8. Valid command at an inappropriate time 1.7%
9. Max. # of ports to a Z39 db are in use 1.7%
10. DISPLAY command - no FIND results 1.5%
11. All others 15.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.2%
2. FIND 11.4%
3. INDEXES 7.3%
4. COMMAND WORDS 5.9%
5. Unrecognized term 5.5%
6. DATABASES 3.9%
7. DISPLAY 2.8%
8. PASSWORDS 2.7%
9. NRLF 1.9%
10. FIND LOCATION 1.2%
11. All others 33.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.3%
2. First word of command is invalid 12.6%
3. FIND command with invalid index name 11.8%
4. DISPLAY command - middle of >1 screen 4.4%
5. FIND command retrieves >1 book 2.9%
6. NS command - no next screen 2.7%
7. DISPLAY command-complete in one screen 2.6%
8. DISPLAY command-first of >1 screen 2.5%
9. DISPLAY command - last of >1 screen 2.0%
10. F/BR with index invalid in current DB 1.9%
11. All others 32.4%
Ten most frequent SHOW requests:
1. HISTORY 51.7%
2. SEARCH 11.4%
3. SETTINGS 8.0%
4. GLOSSARY 6.3%
5. MAIL STATUS 2.3%
6. IAC NEWS 1.7%
7. NEWS 1.7%
8. ABI NEWS 1.1%
9. 0168 1.1%
10. DATABASE NEWS 1.1%
11. All others 13.6%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)