MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 09/22/01 through 09/28/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 764 2,526 3,290
Davis 1,910 212 2,122
Irvine 669 0 669
Los Angeles 16 465 481
Riverside 476 98 574
San Diego 324 179 503
San Francisco 233 0 233
Santa Barbara 243 98 341
Santa Cruz 225 126 351
LBL 0 94 94
LLL 0 72 72
Other - UC 58 232 290
CSL 0 144 144
CSU n/a 164 164
Other-Non-UC n/a 3,819 3,819
_______ ______ _____
4,918 8,229 13,147
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 223 704 4,545
2-4 a.m. 192 540 4,972
4-6 a.m. 201 475 10,588
6-8 a.m. 450 1,281 11,625
8-10 a.m. 1,741 5,453 35,255
10-12 a.m. 2,401 8,721 58,009
12-2 p.m. 2,308 7,804 51,932
2-4 p.m. 2,707 10,326 61,393
4-6 p.m. 1,695 5,617 40,070
6-8 p.m. 501 1,600 11,217
8-10 p.m. 378 966 7,438
10-12 p.m. 350 883 8,181
__________ __________ __________ _________________
Total: 13,147 44,370 305,225
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,895 8,015 9,910
Davis 6,700 879 7,579
Irvine 2,280 0 2,280
Los Angeles 35 1,023 1,058
Riverside 1,830 248 2,078
San Diego 1,524 429 1,953
San Francisco 402 0 402
Santa Barbara 821 212 1,033
Santa Cruz 2,664 282 2,946
LBL 0 133 133
LLL 0 192 192
Other - UC 39 667 706
CSL 0 189 189
CSU n/a 562 562
Other-Non-UC n/a 13,349 13,349
_______ ______ _____
18,190 26,180 44,370
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 16,511 53,158 69,669
Davis 37,734 3,114 40,848
Irvine 17,565 0 17,565
Los Angeles 239 8,759 8,998
Riverside 13,394 2,333 15,727
San Diego 5,221 2,665 7,886
San Francisco 3,088 0 3,088
Santa Barbara 6,757 1,725 8,482
Santa Cruz 6,646 2,954 9,600
LBL 0 1,139 1,139
LLL 0 2,836 2,836
Other - UC 325 6,066 6,391
CSL 0 1,308 1,308
CSU n/a 5,677 5,677
Other-Non-UC n/a 106,011 106,011
_______ ______ _____
107,480 197,745 305,225
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 3.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.9
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:22
Average session length (minutes:seconds) 14:05
Longest session recorded (minutes:seconds) 1015
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 69.0
Retrievals per search - standard deviation 1781.5
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 62.2%
Commands entered, by type, excluding errors:
Total Percentage
FIND 42,602 36.6%
DISPLAY (excluding automatic displays) 36,043 30.9%
ACFIND 29 0.0%
BROWSE 218 0.2%
SELECT 120 0.1%
HELP 848 0.7%
EXPLAIN 886 0.8%
SET/RESET 3,423 2.9%
SHOW 302 0.3%
AT 2,855 2.4%
ADD ON (AND, OR, AND NOT) 1,736 1.5%
LOGON or LOGOFF 21,094 18.1%
COMMENT 1 0.0%
SAVE 698 0.6%
USE 674 0.6%
OTHER 4,997 4.3%
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 6,360 14.3% 1,650 25.9% 12 81.2 405.5
AUTHOR 1,833 4.1% 443 24.2% 11 125.4 626.0
CORPORATE AUTH 529 1.2% 182 34.4% 14 551.2 5125.3
EXACT CA 14 0.0% 6 42.9% 777 1107.1 1300.2
TITLE WORD 9,850 22.1% 3,076 31.2% 4 37.2 193.2
EXACT TITLE 7,856 17.6% 2,292 29.2% 2 25.8 164.2
TITLE -> TW 1,151 2.6% 251 21.8% 8 47.4 104.3
TITLE -> XT 1,499 3.4% 645 43.0% 1 8.9 59.3
SUBJECT 2,277 5.1% 768 33.7% 48 536.9 6547.7
EXACT SUBJECT 106 0.2% 19 17.9% 44 424.5 922.5
PERIODICAL 6,552 14.7% 1,264 19.3% 4 98.3 1179.4
EXACT PE 2,951 6.6% 483 16.4% 3 17.6 145.5
RPE 3 0.0% 1 33.3% 3 3.0 1.4
XRP 5 0.0% 0 0.0% 3 14.4 26.7
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 140 0.3% 29 20.7% 19 2474.7 22193.5
DATE 673 1.5% 159 23.6% 5 68.4 263.7
FORM 447 1.0% 102 22.8% 16 136.2 457.5
NUMBER* 16 0.0% 6 37.5% 3 208.4 594.9
MUSIC* 39 0.1% 29 74.4% 4 436.9 1252.1
SERIES 947 2.1% 280 29.6% 4 64.1 372.2
UNIFORM TITLE 13 0.0% 1 7.7% 3,379 2547.3 1504.9
Other indexes 1,327 3.0% 460 34.7% 1 4.9 38.1
* 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 2,476 5.9% 697 28.1% 4 64.3 302.6
Single 39,499 94.1% 10,728 27.2% 4 97.8 2191.9
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 10 4.8% 1 10.0% 5 57.4 129.3
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 178 85.6% 38 21.3% 34 104.7 153.4
EXACT SUBJECT 16 7.7% 1 6.3% 29 95.4 161.8
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 4 1.9% 0 0.0% 121 114.8 83.4
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 213 100% 41 19.2% 30 99.6 149.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.0%
BRIEF 68.0%
LONG 8.5%
MARC 4.0%
FIELDS 2.9%
TAG 3.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.3%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.4%
Ten most frequent errors:
1. NS command - no next screen 32.0%
2. First word of command is invalid 25.6%
3. FIND command with invalid index name 12.6%
4. DISPLAY command contains invalid word 3.7%
5. Search term missing from search command 2.7%
6. Max. # of ports to a Z39 db are in use 2.2%
7. PS command - no previous screen 2.1%
8. KW search in database w/o KW index 1.7%
9. DISPLAY command - no FIND results 1.5%
10. Valid command at an inappropriate time 1.4%
11. All others 14.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.6%
2. FIND 11.7%
3. COMMAND WORDS 6.5%
4. INDEXES 6.3%
5. Unrecognized term 5.6%
6. PASSWORDS 3.3%
7. DISPLAY 3.2%
8. NRLF 1.9%
9. DATABASES 1.8%
10. LOCATE (PE DB) 1.5%
11. All others 33.5%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.5%
2. FIND command with invalid index name 13.2%
3. First word of command is invalid 13.0%
4. FIND command retrieves >1 book 3.6%
5. DISPLAY command - middle of >1 screen 3.6%
6. DISPLAY command-first of >1 screen 3.2%
7. DISPLAY command-complete in one screen 2.8%
8. NS command - no next screen 2.7%
9. TW search with zero results 2.1%
10. Help requested from SET DB command 1.9%
11. All others 30.3%
Ten most frequent SHOW requests:
1. HISTORY 37.9%
2. GLOSSARY 9.9%
3. SEARCH 8.5%
4. SETTINGS 7.2%
5. UPDATE 5.1%
6. MEDLINE NEWS 1.7%
7. DATABASES 1.7%
8. NEWS 1.4%
9. FORM NAMES 1.4%
10. MAIL STATUS 1.4%
11. All others 23.9%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)