MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 09/01/01 through 09/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,866 9,199 12,065
Davis 6,527 772 7,299
Irvine 2,312 0 2,312
Los Angeles 52 1,563 1,615
Riverside 1,668 246 1,914
San Diego 1,299 631 1,930
San Francisco 869 0 869
Santa Barbara 709 441 1,150
Santa Cruz 762 521 1,283
LBL 0 360 360
LLL 0 251 251
Other - UC 144 948 1,092
CSL 0 484 484
CSU n/a 527 527
Other-Non UC n/a 15,311 15,311
_______ ______ _____
17,208 31,254 48,462
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 986 3,447 22,924
2-4 a.m. 746 2,681 19,517
4-6 a.m. 766 2,669 24,693
6-8 a.m. 1,694 4,993 34,571
8-10 a.m. 6,189 19,793 140,026
10-12 a.m. 8,996 31,032 220,568
12-2 p.m. 8,411 27,463 206,611
2-4 p.m. 9,783 34,957 253,017
4-6 p.m. 6,122 20,749 149,530
6-8 p.m. 2,098 6,300 48,781
8-10 p.m. 1,352 3,519 32,974
10-12 p.m. 1,319 3,955 29,186
__________ __________ __________ _________________
Total: 48,462 161,558 1,182,398
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,266 28,851 36,117
Davis 23,753 3,088 26,841
Irvine 8,015 0 8,015
Los Angeles 106 3,736 3,842
Riverside 5,969 599 6,568
San Diego 5,567 1,409 6,976
San Francisco 1,591 0 1,591
Santa Barbara 2,450 878 3,328
Santa Cruz 6,764 1,122 7,886
LBL 0 491 491
LLL 0 755 755
Other - UC 124 2,600 2,724
CSL 0 705 705
CSU n/a 2,041 2,041
Other-Non UC n/a 53,678 53,678
_______ ______ _____
61,605 99,953 161,558
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 63,900 217,625 281,525
Davis 134,004 14,687 148,691
Irvine 62,829 0 62,829
Los Angeles 1,194 36,099 37,293
Riverside 40,868 6,771 47,639
San Diego 22,164 8,685 30,849
San Francisco 10,510 0 10,510
Santa Barbara 23,929 7,606 31,535
Santa Cruz 21,898 9,219 31,117
LBL 0 3,942 3,942
LLL 0 7,125 7,125
Other - UC 915 18,914 19,829
CSL 0 5,300 5,300
CSU n/a 21,228 21,228
Other-Non UC n/a 442,986 442,986
_______ ______ _____
382,211 800,187 1,182,398
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 2.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.8
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1108
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 61.7
Retrievals per search - standard deviation 1220.9
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 62.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 155,201 36.0%
DISPLAY (excluding automatic displays) 135,854 31.5%
ACFIND 69 0.0%
BROWSE 1,028 0.2%
SELECT 612 0.1%
HELP 3,056 0.7%
EXPLAIN 3,129 0.7%
SET/RESET 12,667 2.9%
SHOW 1,014 0.2%
AT 9,659 2.2%
ADD ON (AND, OR, AND NOT) 6,246 1.5%
LOGON or LOGOFF 77,811 18.1%
COMMENT 4 0.0%
SAVE 3,023 0.7%
USE 2,558 0.6%
OTHER 18,694 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 23,824 14.7% 5,866 24.6% 11 80.1 402.2
AUTHOR 6,346 3.9% 1,518 23.9% 11 123.0 553.1
CORPORATE AUTH 1,756 1.1% 653 37.2% 15 476.3 4205.3
EXACT CA 36 0.0% 16 44.4% 34 840.6 1836.0
TITLE WORD 36,882 22.7% 11,481 31.1% 4 50.0 772.1
EXACT TITLE 28,251 17.4% 8,226 29.1% 2 23.0 144.6
TITLE -> TW 4,365 2.7% 1,100 25.2% 7 46.0 143.2
TITLE -> XT 5,244 3.2% 2,409 45.9% 1 24.4 515.9
SUBJECT 7,522 4.6% 2,503 33.3% 42 473.9 4760.9
EXACT SUBJECT 384 0.2% 74 19.3% 47 403.2 1073.2
PERIODICAL 24,921 15.3% 4,772 19.1% 4 82.1 919.9
EXACT PE 10,204 6.3% 1,586 15.5% 3 35.3 717.8
RPE 20 0.0% 1 5.0% 3 53.3 206.8
XRP 21 0.0% 0 0.0% 3 5.9 12.9
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 312 0.2% 56 17.9% 33 1166.7 14624.1
DATE 2,422 1.5% 571 23.6% 4 95.4 1008.5
FORM 1,963 1.2% 457 23.3% 15 190.7 1309.6
NUMBER* 81 0.0% 25 30.9% 6 211.3 557.0
MUSIC* 205 0.1% 114 55.6% 14 410.8 831.8
SERIES 3,622 2.2% 1,101 30.4% 2 62.6 315.5
UNIFORM TITLE 25 0.0% 4 16.0% 32 1459.8 1703.3
Other indexes 4,201 2.6% 1,585 37.7% 1 20.3 349.1
* 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 9,216 6.0% 2,507 27.2% 4 72.8 587.0
Single 143,659 94.0% 39,003 27.1% 4 86.3 1490.4
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 48 5.2% 7 14.6% 5 53.0 140.4
CORPORATE AUTH 9 1.0% 2 22.2% 14 29.3 38.9
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 802 86.3% 166 20.7% 26 206.3 2423.4
EXACT SUBJECT 60 6.5% 9 15.0% 19 79.9 157.4
UNIFORM TITLE 1 0.1% 1 100% 0 0.0 0.0
SERIES 9 1.0% 1 11.1% 121 128.8 116.1
By number of indexes:
Multiple 2 0.2% 2 100% 0 0.0 0.0
Single 974 99.8% 193 19.8% 23 178.7 2188.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.9%
BRIEF 67.6%
LONG 9.6%
MARC 4.2%
FIELDS 2.8%
TAG 2.9%
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 7.5%
Ten most frequent errors:
1. NS command - no next screen 32.0%
2. First word of command is invalid 25.4%
3. FIND command with invalid index name 12.3%
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. DISPLAY command - no FIND results 1.7%
9. Valid command at an inappropriate time 1.5%
10. KW search in database w/o KW index 1.5%
11. All others 14.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.9%
2. FIND 13.1%
3. INDEXES 6.5%
4. COMMAND WORDS 5.9%
5. Unrecognized term 5.5%
6. PASSWORDS 4.2%
7. DISPLAY 3.0%
8. NRLF 2.0%
9. DATABASES 2.0%
10. LOCATE (PE DB) 1.5%
11. All others 31.4%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.4%
2. First word of command is invalid 14.9%
3. FIND command with invalid index name 12.7%
4. DISPLAY command - middle of >1 screen 4.1%
5. DISPLAY command-first of >1 screen 3.2%
6. FIND command retrieves >1 book 2.7%
7. NS command - no next screen 2.3%
8. TW search with zero results 2.0%
9. DISPLAY command-complete in one screen 2.0%
10. DISPLAY command - last of >1 screen 1.9%
11. All others 29.8%
Ten most frequent SHOW requests:
1. HISTORY 44.4%
2. SEARCH 10.4%
3. GLOSSARY 9.1%
4. SETTINGS 6.1%
5. UPDATE 2.9%
6. DATABASE NEWS 2.4%
7. MAIL STATUS 1.7%
8. UCSF PASSWORDS 1.2%
9. NEWS 1.2%
10. DATABASES 1.2%
11. All others 19.3%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)