MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 06/09/01 through 06/15/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 504 2,028 2,532
Davis 1,432 205 1,637
Irvine 709 0 709
Los Angeles 23 579 602
Riverside 489 80 569
San Diego 379 221 600
San Francisco 313 0 313
Santa Barbara 204 166 370
Santa Cruz 226 143 369
LBL 0 80 80
LLL 0 73 73
Other - UC 36 143 179
CSL 0 130 130
CSU n/a 120 120
Other-Non-UC n/a 3,908 3,908
_______ ______ _____
4,315 7,876 12,191
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 233 849 5,922
2-4 a.m. 163 491 3,234
4-6 a.m. 194 507 3,000
6-8 a.m. 472 1,200 7,814
8-10 a.m. 1,697 5,033 35,579
10-12 a.m. 2,253 7,152 57,582
12-2 p.m. 2,121 7,261 62,014
2-4 p.m. 2,350 7,740 61,506
4-6 p.m. 1,551 4,576 34,455
6-8 p.m. 512 1,512 12,310
8-10 p.m. 331 756 5,546
10-12 p.m. 314 829 5,753
__________ __________ __________ _________________
Total: 12,191 37,906 294,715
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,422 5,981 7,403
Davis 4,992 759 5,751
Irvine 2,772 0 2,772
Los Angeles 63 1,300 1,363
Riverside 1,771 153 1,924
San Diego 1,138 544 1,682
San Francisco 609 0 609
Santa Barbara 583 404 987
Santa Cruz 1,059 291 1,350
LBL 0 116 116
LLL 0 187 187
Other - UC 60 410 470
CSL 0 367 367
CSU n/a 436 436
Other-Non-UC n/a 12,489 12,489
_______ ______ _____
14,469 23,437 37,906
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,554 59,573 71,127
Davis 31,120 3,401 34,521
Irvine 19,177 0 19,177
Los Angeles 275 11,184 11,459
Riverside 12,314 2,542 14,856
San Diego 7,524 3,094 10,618
San Francisco 3,060 0 3,060
Santa Barbara 5,401 3,218 8,619
Santa Cruz 7,179 2,993 10,172
LBL 0 893 893
LLL 0 1,236 1,236
Other - UC 501 3,688 4,189
CSL 0 2,851 2,851
CSU n/a 5,858 5,858
Other-Non-UC n/a 96,079 96,079
_______ ______ _____
98,105 196,610 294,715
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 2.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 9:55
Average session length (minutes:seconds) 13:26
Longest session recorded (minutes:seconds) 960:03
Average number of searches completed per session 3.1
Retrievals per search - median 2.0
Retrievals per search - average 67.1
Retrievals per search - standard deviation 1110.9
Percent of searches completed with 0 results 26.3%
Percent of searches entered that are long 3.5%
Percent of long searches completed
(includes partial results) 64.4%
Commands entered, by type, excluding errors:
Total Percentage
FIND 36,699 34.9%
DISPLAY (excluding automatic displays) 34,139 32.5%
ACFIND 16 0.0%
BROWSE 149 0.1%
SELECT 109 0.1%
HELP 644 0.6%
EXPLAIN 708 0.7%
SET/RESET 3,010 2.9%
SHOW 188 0.2%
AT 2,121 2.0%
ADD ON (AND, OR, AND NOT) 1,180 1.1%
LOGON or LOGOFF 19,618 18.7%
COMMENT 0 0.0%
SAVE 776 0.7%
USE 883 0.8%
OTHER 4,811 4.6%
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 5,430 14.2% 1,317 24.3% 11 97.3 600.4
AUTHOR 1,854 4.9% 457 24.6% 12 107.9 425.0
CORPORATE AUTH 472 1.2% 163 34.5% 16 1076.8 9673.9
EXACT CA 13 0.0% 2 15.4% 99 5164.1 11061.0
TITLE WORD 8,609 22.6% 2,702 31.4% 4 46.5 371.4
EXACT TITLE 5,195 13.6% 1,500 28.9% 2 21.8 144.3
TITLE -> TW 1,023 2.7% 260 25.4% 6 44.5 130.4
TITLE -> XT 1,241 3.3% 517 41.7% 1 11.2 147.8
SUBJECT 2,182 5.7% 599 27.4% 17 236.9 870.2
EXACT SUBJECT 120 0.3% 37 30.8% 90 409.1 906.9
PERIODICAL 7,087 18.6% 1,412 19.9% 5 81.8 887.2
EXACT PE 2,438 6.4% 363 14.9% 3 90.8 1790.5
RPE 2 0.0% 1 50.0% 46 46.0 0.0
XRP 5 0.0% 0 0.0% 3 3.8 1.9
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 59 0.2% 8 13.6% 71 665.1 1563.4
DATE 543 1.4% 129 23.8% 4 65.8 301.1
FORM 262 0.7% 90 34.3% 17 462.2 2506.4
NUMBER* 20 0.1% 11 55.0% 3 6.8 7.2
MUSIC* 22 0.1% 19 86.4% 5 94.7 157.0
SERIES 1,003 2.6% 336 33.5% 3 72.0 287.6
UNIFORM TITLE 11 0.0% 6 54.5% 7 7.4 6.8
Other indexes 583 1.5% 193 33.1% 1 28.7 144.0
* 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 1,890 5.2% 534 28.3% 4 102.8 892.6
Single 34,328 94.8% 9,033 26.3% 5 91.7 1332.7
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 39 28.7% 10 25.6% 4 11.1 15.7
CORPORATE AUTH 1 0.7% 1 100% 0 0.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 92 67.6% 23 25.0% 57 186.9 500.7
EXACT SUBJECT 4 2.9% 0 0.0% 6 134.5 259.7
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 143 100% 38 26.6% 19 131.6 415.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.2%
BRIEF 65.7%
LONG 11.4%
MARC 3.9%
FIELDS 2.7%
TAG 3.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.1%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.3%
Ten most frequent errors:
1. NS command - no next screen 33.3%
2. First word of command is invalid 23.8%
3. FIND command with invalid index name 10.8%
4. DISPLAY command contains invalid word 4.4%
5. Max. # of ports to a Z39 db are in use 3.0%
6. Search term missing from search command 2.5%
7. KW search in database w/o KW index 2.0%
8. PS command - no previous screen 2.0%
9. DISPLAY command - no FIND results 1.6%
10. Valid command at an inappropriate time 1.5%
11. All others 15.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.5%
2. FIND 14.8%
3. INDEXES 10.2%
4. Unrecognized term 5.4%
5. COMMAND WORDS 5.4%
6. PASSWORDS 3.8%
7. DATABASES 3.0%
8. CATALOG 2.4%
9. DISPLAY 1.6%
10. MAIL 1.4%
11. All others 30.6%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.5%
2. First word of command is invalid 14.3%
3. FIND command with invalid index name 11.2%
4. F/BR with index invalid in current DB 3.6%
5. FIND command retrieves >1 book 2.9%
6. DISPLAY command - middle of >1 screen 2.7%
7. DISPLAY command-first of >1 screen 2.4%
8. DISPLAY command-complete in one screen 2.1%
9. NS command - no next screen 2.1%
10. Help requested from SET DB command 2.0%
11. All others 32.2%
Ten most frequent SHOW requests:
1. HISTORY 54.3%
2. SEARCH 10.9%
3. GLOSSARY 5.4%
4. SETTINGS 3.8%
5. DATABASE NEWS 2.7%
6. SYSTEM NEWS 1.6%
7. SYSTEM5 NEWS 1.6%
8. TERMINAL 1.6%
9. UCSF PASSWORDS 1.1%
10. LIBRARY NEWS 1.1%
11. All others 15.8%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)