MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 06/01/01 through 06/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,170 8,939 11,109
Davis 6,485 859 7,344
Irvine 2,616 0 2,616
Los Angeles 48 2,331 2,379
Riverside 2,004 311 2,315
San Diego 1,596 740 2,336
San Francisco 1,098 0 1,098
Santa Barbara 950 857 1,807
Santa Cruz 1,161 538 1,699
LBL 0 351 351
LLL 0 286 286
Other - UC 117 692 809
CSL 0 534 534
CSU n/a 438 438
Other-Non UC n/a 16,295 16,295
_______ ______ _____
18,245 33,171 51,416
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,029 3,255 32,530
2-4 a.m. 696 2,230 20,260
4-6 a.m. 769 2,098 16,115
6-8 a.m. 1,858 5,666 48,528
8-10 a.m. 6,866 22,156 165,108
10-12 a.m. 9,897 45,719 267,414
12-2 p.m. 9,145 31,986 260,394
2-4 p.m. 10,020 32,342 242,780
4-6 p.m. 6,358 19,732 157,255
6-8 p.m. 2,062 6,503 47,083
8-10 p.m. 1,452 3,941 32,508
10-12 p.m. 1,264 3,493 29,556
__________ __________ __________ _________________
Total: 51,416 179,121 1,319,531
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 6,055 43,177 49,232
Davis 22,042 3,425 25,467
Irvine 9,512 0 9,512
Los Angeles 156 5,306 5,462
Riverside 7,040 718 7,758
San Diego 4,168 1,617 5,785
San Francisco 2,169 0 2,169
Santa Barbara 2,549 2,003 4,552
Santa Cruz 5,411 1,267 6,678
LBL 0 509 509
LLL 0 815 815
Other - UC 149 1,946 2,095
CSL 0 1,269 1,269
CSU n/a 1,658 1,658
Other-Non UC n/a 56,160 56,160
_______ ______ _____
59,251 119,870 179,121
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 48,375 271,002 319,377
Davis 151,442 17,119 168,561
Irvine 68,455 0 68,455
Los Angeles 714 47,883 48,597
Riverside 46,868 7,265 54,133
San Diego 26,339 13,488 39,827
San Francisco 13,210 0 13,210
Santa Barbara 24,864 18,537 43,401
Santa Cruz 29,195 10,723 39,918
LBL 0 4,525 4,525
LLL 0 8,894 8,894
Other - UC 1,199 13,698 14,897
CSL 0 10,727 10,727
CSU n/a 18,882 18,882
Other-Non UC n/a 466,127 466,127
_______ ______ _____
410,661 908,870 1,319,531
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 4.3
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:
____________________________
Longest session recorded (minutes:seconds) 1096
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 70.8
Retrievals per search - standard deviation 1497.3
Percent of searches completed with 0 results 30.5%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 62.7%
Commands entered, by type, excluding errors:
Total Percentage
FIND 173,588 37.1%
DISPLAY (excluding automatic displays) 150,833 32.2%
ACFIND 28 0.0%
BROWSE 612 0.1%
SELECT 383 0.1%
HELP 2,601 0.6%
EXPLAIN 3,048 0.7%
SET/RESET 13,070 2.8%
SHOW 868 0.2%
AT 8,865 1.9%
ADD ON (AND, OR, AND NOT) 5,472 1.2%
LOGON or LOGOFF 82,811 17.7%
COMMENT 1 0.0%
SAVE 3,120 0.7%
USE 3,805 0.8%
OTHER 19,325 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 24,778 13.5% 5,890 23.8% 10 88.7 616.9
AUTHOR 6,781 3.7% 1,677 24.7% 13 111.1 470.2
CORPORATE AUTH 1,715 0.9% 612 35.7% 29 805.8 6190.9
EXACT CA 41 0.0% 12 29.3% 55 2154.6 7044.2
TITLE WORD 37,978 20.6% 11,853 31.2% 4 43.1 394.0
EXACT TITLE 25,768 14.0% 7,294 28.3% 2 20.5 139.8
TITLE -> TW 4,154 2.3% 1,065 25.6% 7 65.4 459.3
TITLE -> XT 5,412 2.9% 2,316 42.8% 1 9.0 86.9
SUBJECT 22,487 12.2% 13,755 61.2% 8 224.6 1375.5
EXACT SUBJECT 458 0.2% 111 24.2% 71 526.1 1595.2
PERIODICAL 29,572 16.1% 5,787 19.6% 5 100.6 1428.4
EXACT PE 10,551 5.7% 1,611 15.3% 3 45.8 1069.8
RPE 3 0.0% 1 33.3% 28 28.0 25.5
XRP 6 0.0% 0 0.0% 4 3.8 1.7
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 341 0.2% 45 13.2% 84 6588.5 28303.8
DATE 5,040 2.7% 856 17.0% 2 49.9 727.2
FORM 1,655 0.9% 461 27.9% 10 345.3 2539.1
NUMBER* 119 0.1% 57 47.9% 4 35.4 89.8
MUSIC* 55 0.0% 43 78.2% 41 280.3 415.8
SERIES 4,158 2.3% 1,358 32.7% 3 96.7 1556.4
UNIFORM TITLE 36 0.0% 17 47.2% 11 66.2 150.6
Other indexes 2,829 1.5% 990 35.0% 1 44.7 370.1
* 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 12,194 7.1% 3,046 25.0% 3 62.8 775.8
Single 159,150 92.9% 49,618 31.2% 5 106.0 1883.5
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 68 12.4% 13 19.1% 8 51.1 172.2
CORPORATE AUTH 8 1.5% 3 37.5% 17 40.4 66.7
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 415 75.7% 83 20.0% 45 153.1 320.9
EXACT SUBJECT 47 8.6% 6 12.8% 21 139.0 362.5
UNIFORM TITLE 1 0.2% 1 100% 0 0.0 0.0
SERIES 9 1.6% 5 55.6% 2 8.3 13.2
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 587 100% 119 20.3% 29 130.0 299.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.4%
BRIEF 65.3%
LONG 11.0%
MARC 4.0%
FIELDS 2.7%
TAG 3.3%
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 9.1%
Ten most frequent errors:
1. DISPLAY command - no FIND results 25.5%
2. NS command - no next screen 25.0%
3. First word of command is invalid 18.6%
4. FIND command with invalid index name 8.1%
5. DISPLAY command contains invalid word 3.4%
6. Max. # of ports to a Z39 db are in use 2.2%
7. Search term missing from search command 1.8%
8. PS command - no previous screen 1.5%
9. KW search in database w/o KW index 1.4%
10. Valid command at an inappropriate time 1.1%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.0%
2. FIND 14.6%
3. INDEXES 7.4%
4. COMMAND WORDS 5.4%
5. Unrecognized term 5.3%
6. PASSWORDS 4.0%
7. DATABASES 2.9%
8. DISPLAY 2.2%
9. CATALOG 1.9%
10. LOCATE (PE DB) 1.4%
11. All others 30.8%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.3%
2. First word of command is invalid 14.0%
3. FIND command with invalid index name 10.4%
4. DISPLAY command - middle of >1 screen 3.5%
5. NS command - no next screen 2.8%
6. DISPLAY command-first of >1 screen 2.7%
7. DISPLAY command-complete in one screen 2.6%
8. FIND command retrieves >1 book 2.6%
9. F/BR with index invalid in current DB 2.3%
10. KW search in database w/o KW index 2.0%
11. All others 31.9%
Ten most frequent SHOW requests:
1. HISTORY 51.6%
2. SEARCH 10.1%
3. GLOSSARY 9.3%
4. SETTINGS 5.3%
5. MAIL STATUS 3.3%
6. DATABASE NEWS 2.2%
7. UCSF PASSWORDS 1.1%
8. TIME 1.0%
9. NEWS 1.0%
10. SYSTEM NEWS 0.8%
11. All others 14.5%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)