MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 04/27/02 through 05/03/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 641 2,051 2,692
Davis 1,316 146 1,462
Irvine 340 0 340
Los Angeles 7 365 372
Riverside 380 74 454
San Diego 314 105 419
San Francisco 128 0 128
Santa Barbara 198 90 288
Santa Cruz 154 148 302
LBL 0 70 70
LLL 0 57 57
Other - UC 23 243 266
CSL 0 141 141
CSU n/a 103 103
Other-Non-UC n/a 2,937 2,937
_______ ______ _____
3,501 6,530 10,031
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 133 366 2,895
2-4 a.m. 100 475 3,558
4-6 a.m. 114 366 3,320
6-8 a.m. 318 1,048 7,867
8-10 a.m. 1,264 5,030 36,896
10-12 a.m. 1,890 7,560 51,697
12-2 p.m. 1,862 6,930 47,775
2-4 p.m. 2,042 7,834 53,029
4-6 p.m. 1,325 5,601 42,124
6-8 p.m. 467 2,035 14,379
8-10 p.m. 319 1,479 11,266
10-12 p.m. 197 934 15,782
__________ __________ __________ _________________
Total: 10,031 39,658 290,588
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,748 6,963 8,711
Davis 4,926 881 5,807
Irvine 1,362 0 1,362
Los Angeles 7 1,013 1,020
Riverside 2,516 199 2,715
San Diego 945 219 1,164
San Francisco 360 0 360
Santa Barbara 1,190 148 1,338
Santa Cruz 1,612 1,178 2,790
LBL 0 60 60
LLL 0 118 118
Other - UC 18 557 575
CSL 0 198 198
CSU n/a 456 456
Other-Non-UC n/a 12,984 12,984
_______ ______ _____
14,684 24,974 39,658
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,212 53,087 68,299
Davis 29,933 4,927 34,860
Irvine 8,918 0 8,918
Los Angeles 105 7,303 7,408
Riverside 10,486 1,444 11,930
San Diego 4,899 1,449 6,348
San Francisco 4,198 0 4,198
Santa Barbara 9,022 1,382 10,404
Santa Cruz 4,644 3,639 8,283
LBL 0 794 794
LLL 0 986 986
Other - UC 74 4,805 4,879
CSL 0 1,753 1,753
CSU n/a 5,015 5,015
Other-Non-UC n/a 116,513 116,513
_______ ______ _____
87,491 203,097 290,588
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 2.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 1.5
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:54
Average session length (minutes:seconds) 15:15
Longest session recorded (minutes:seconds) 1021
Average number of searches completed per session 3.9
Retrievals per search - median 2.0
Retrievals per search - average 64.7
Retrievals per search - standard deviation 1187.6
Percent of searches completed with 0 results 26.6%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 64.6%
Commands entered, by type, excluding errors:
Total Percentage
FIND 37,973 37.1%
DISPLAY (excluding automatic displays) 34,081 33.3%
ACFIND 4 0.0%
BROWSE 148 0.1%
SELECT 146 0.1%
HELP 697 0.7%
EXPLAIN 577 0.6%
SET/RESET 1,971 1.9%
SHOW 222 0.2%
AT 2,417 2.4%
ADD ON (AND, OR, AND NOT) 1,663 1.6%
LOGON or LOGOFF 17,459 17.0%
COMMENT 0 0.0%
SAVE 597 0.6%
USE 649 0.6%
OTHER 3,861 3.8%
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 5,699 14.4% 1,409 24.7% 10 63.1 211.3
AUTHOR 1,356 3.4% 340 25.1% 11 114.5 757.7
CORPORATE AUTH 363 0.9% 146 40.2% 34 1121.9 8804.7
EXACT CA 19 0.0% 1 5.3% 3 40.3 151.0
TITLE WORD 8,524 21.5% 2,805 32.9% 4 72.6 1930.6
EXACT TITLE 6,896 17.4% 1,785 25.9% 2 18.8 129.4
TITLE -> TW 883 2.2% 225 25.5% 8 65.2 497.9
TITLE -> XT 979 2.5% 435 44.4% 2 10.2 50.2
SUBJECT 1,976 5.0% 658 33.3% 48 656.5 4018.9
EXACT SUBJECT 123 0.3% 31 25.2% 40 426.9 1042.8
PERIODICAL 7,451 18.8% 1,606 21.6% 5 55.6 425.3
EXACT PE 2,853 7.2% 473 16.6% 3 29.2 397.0
RPE 3 0.0% 1 33.3% 11 10.5 2.1
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 62 0.2% 12 19.4% 36 896.1 3287.3
DATE 510 1.3% 134 26.3% 4 88.7 335.5
FORM 415 1.0% 122 29.4% 16 161.0 855.5
NUMBER* 26 0.1% 11 42.3% 2 6.7 10.1
MUSIC* 3 0.0% 1 33.3% 22 21.5 23.3
SERIES 811 2.0% 229 28.2% 4 49.5 138.9
UNIFORM TITLE 3 0.0% 3 100% 0 0.0 0.0
Other indexes 688 1.7% 292 42.4% 1 6.3 33.1
* 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 2,015 5.4% 641 31.8% 4 156.6 2594.2
Single 35,483 94.6% 9,403 26.5% 4 84.6 1312.2
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 5 3.8% 1 20.0% 7 9.3 8.2
CORPORATE AUTH 1 0.8% 0 0.0% 2 2.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 109 83.2% 24 22.0% 54 228.0 678.0
EXACT SUBJECT 16 12.2% 1 6.3% 26 67.6 96.9
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 144 100% 30 20.8% 30 180.2 591.5
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.3%
BRIEF 68.1%
LONG 9.6%
MARC 3.1%
FIELDS 2.9%
TAG 3.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.0%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.9%
Ten most frequent errors:
1. NS command - no next screen 34.4%
2. First word of command is invalid 23.8%
3. FIND command with invalid index name 12.6%
4. DISPLAY command contains invalid word 4.9%
5. Search term missing from search command 2.4%
6. PS command - no previous screen 2.2%
7. DISPLAY command - no FIND results 1.6%
8. Valid command at an inappropriate time 1.5%
9. NS of SHOW/EXP command-no next screen 1.3%
10. KW search in database w/o KW index 1.1%
11. All others 14.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 25.0%
2. FIND 13.7%
3. INDEXES 7.6%
4. COMMAND WORDS 7.1%
5. Unrecognized term 4.3%
6. DISPLAY 3.5%
7. PASSWORDS 3.5%
8. CATALOG 3.3%
9. DATABASES 2.9%
10. AT 1.6%
11. All others 27.6%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 19.7%
2. FIND command with invalid index name 16.0%
3. First word of command is invalid 14.5%
4. DISPLAY command - middle of >1 screen 4.3%
5. DISPLAY command-first of >1 screen 3.0%
6. NS command - no next screen 2.3%
7. DISPLAY command-complete in one screen 2.0%
8. FIND command retrieves 1 book 1.9%
9. TW search with zero results 1.8%
10. SU search with zero results 1.8%
11. All others 32.7%
Ten most frequent SHOW requests:
1. HISTORY 53.9%
2. GLOSSARY 10.7%
3. SETTINGS 10.2%
4. SEARCH 9.7%
5. MAIL STATUS 2.9%
6. NEWS 2.4%
7. MELVYL 1.5%
8. DATABASE NEWS 1.5%
9. MAIL SETTINGS 1.5%
10. LOCATION 1.0%
11. All others 4.9%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)