MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 12/01/99 through 12/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,057 10,085 14,142
Davis 11,150 1,713 12,863
Irvine 4,256 0 4,256
Los Angeles 2,175 6,438 8,613
Riverside 2,511 694 3,205
San Diego 2,245 1,188 3,433
San Francisco 1,728 9 1,737
Santa Barbara 2,882 1,785 4,667
Santa Cruz 1,655 1,969 3,624
LBL 0 492 492
LLL 0 520 520
Other - UC 355 902 1,257
CSL 0 877 877
CSU n/a 670 670
Other-Network UC n/a 22,400 22,400
_______ ______ _____
33,014 49,742 82,756
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,501 7,284 52,719
2-4 a.m. 1,151 4,934 37,313
4-6 a.m. 1,046 3,844 31,011
6-8 a.m. 2,080 7,123 57,057
8-10 a.m. 9,171 31,711 227,128
10-12 a.m. 15,529 52,294 387,122
12-2 p.m. 15,195 52,140 394,435
2-4 p.m. 17,480 57,811 439,263
4-6 p.m. 10,646 35,338 269,368
6-8 p.m. 3,962 14,194 113,775
8-10 p.m. 2,758 8,991 93,978
10-12 p.m. 2,237 8,122 69,674
__________ __________ __________ _________________
Total: 82,756 283,786 2,172,843
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,957 28,285 39,242
Davis 37,225 7,234 44,459
Irvine 15,269 0 15,269
Los Angeles 9,338 20,360 29,698
Riverside 9,457 1,910 11,367
San Diego 6,478 2,248 8,726
San Francisco 3,126 1 3,127
Santa Barbara 11,653 4,598 16,251
Santa Cruz 6,157 7,909 14,066
LBL 0 631 631
LLL 0 1,331 1,331
Other - UC 221 4,647 4,868
CSL 0 3,012 3,012
CSU n/a 2,093 2,093
Other-Network UC n/a 89,646 89,646
_______ ______ _____
109,881 173,905 283,786
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 88,932 238,524 327,456
Davis 265,158 37,019 302,177
Irvine 102,171 0 102,171
Los Angeles 64,167 191,846 256,013
Riverside 70,296 35,539 105,835
San Diego 41,603 31,667 73,270
San Francisco 22,127 0 22,127
Santa Barbara 92,623 40,425 133,048
Santa Cruz 27,578 44,789 72,367
LBL 0 6,183 6,183
LLL 0 9,615 9,615
Other - UC 2,356 21,626 23,982
CSL 0 14,532 14,532
CSU n/a 17,678 17,678
Other-Network UC n/a 706,389 706,389
_______ ______ _____
777,011 1,395,832 2,172,843
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 3.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.8
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1291
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 71.7
Retrievals per search - standard deviation 809.9
Percent of searches completed with 0 results 27.8%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 56.2%
Commands entered, by type, excluding errors:
Total Percentage
FIND 275,035 36.7%
DISPLAY (excluding automatic displays) 228,551 30.5%
ACFIND 68 0.0%
BROWSE 1,685 0.2%
SELECT 1,060 0.1%
HELP 9,060 1.2%
EXPLAIN 8,617 1.1%
SET/RESET 17,221 2.3%
SHOW 2,483 0.3%
AT 13,368 1.8%
ADD ON (AND, OR, AND NOT) 8,598 1.1%
LOGON or LOGOFF 135,747 18.1%
COMMENT 17 0.0%
SAVE 5,766 0.8%
USE 6,463 0.9%
OTHER 35,841 4.8%
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 43,039 15.1% 10,359 24.1% 11 93.5 448.7
AUTHOR 15,528 5.4% 3,816 24.6% 14 124.0 496.7
CORPORATE AUTH 2,565 0.9% 1,034 40.3% 23 608.3 3519.0
EXACT CA 95 0.0% 36 37.9% 215 702.4 1068.5
TITLE WORD 68,165 23.9% 21,179 31.1% 5 46.0 359.7
EXACT TITLE 42,293 14.8% 12,151 28.7% 2 24.4 151.9
TITLE -> TW 7,100 2.5% 1,751 24.7% 10 57.1 261.2
TITLE -> XT 8,077 2.8% 3,413 42.3% 1 11.5 142.5
SUBJECT 20,217 7.1% 8,127 40.2% 48 410.2 2136.7
EXACT SUBJECT 1,113 0.4% 317 28.5% 65 475.1 1406.9
PERIODICAL 45,784 16.1% 9,509 20.8% 5 127.0 1463.4
EXACT PE 14,545 5.1% 2,290 15.7% 3 33.4 517.0
RPE 18 0.0% 7 38.9% 9 25.7 49.6
XRP 4 0.0% 1 25.0% 3 3.7 1.2
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 719 0.3% 190 26.4% 58 413.9 1615.7
DATE 4,050 1.4% 1,022 25.2% 3 61.4 319.2
FORM 1,817 0.6% 430 23.7% 10 121.7 579.9
NUMBER* 335 0.1% 105 31.3% 2 228.3 1858.1
MUSIC* 79 0.0% 59 74.7% 18 187.0 529.2
SERIES 5,188 1.8% 1,917 36.9% 4 70.7 302.0
UNIFORM TITLE 45 0.0% 21 46.7% 14 342.0 843.2
Other indexes 4,193 1.5% 1,849 44.1% 1 71.6 1014.1
* 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 14,623 5.4% 4,296 29.4% 3 54.3 352.5
Single 255,116 94.6% 70,794 27.7% 5 102.9 984.5
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 207 13.5% 33 15.9% 5 54.6 127.2
CORPORATE AUTH 16 1.0% 6 37.5% 26 154.9 416.9
EXACT CA 3 0.2% 2 66.7% 98 98.0 0.0
SUBJECT 1,179 77.1% 301 25.5% 51 238.1 915.2
EXACT SUBJECT 100 6.5% 14 14.0% 59 250.7 706.8
UNIFORM TITLE 14 0.9% 10 71.4% 100 183.5 251.2
SERIES 11 0.7% 6 54.5% 8 129.0 256.8
By number of indexes:
Multiple 2 0.1% 0 0.0% 1,121 1120.5 1109.5
Single 1,581 99.9% 388 24.5% 35 201.1 810.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.2%
BRIEF 72.7%
LONG 9.8%
MARC 3.6%
FIELDS 2.1%
TAG 1.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.3%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. First word of command is invalid 28.2%
2. NS command - no next screen 28.1%
3. FIND command with invalid index name 12.8%
4. DISPLAY command contains invalid word 3.4%
5. KW search in database w/o KW index 3.0%
6. Search term missing from search command 2.4%
7. PS command - no previous screen 1.9%
8. DISPLAY command - no FIND results 1.7%
9. Valid command at an inappropriate time 1.6%
10. Command contains escape or arrow key 1.3%
11. All others 15.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.9%
2. FIND 14.1%
3. INDEXES 7.7%
4. COMMAND WORDS 6.5%
5. Unrecognized term 4.9%
6. PASSWORDS 3.3%
7. DISPLAY 2.8%
8. DATABASES 2.4%
9. ADD-ON SEARCH 1.9%
10. SRLF 1.8%
11. All others 27.8%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 21.8%
2. First word of command is invalid 14.3%
3. FIND command with invalid index name 11.5%
4. DISPLAY command - middle of >1 screen 4.4%
5. FIND command retrieves >1 book 3.3%
6. NS command - no next screen 3.1%
7. DISPLAY command-first of >1 screen 3.1%
8. KW search in database w/o KW index 2.5%
9. DISPLAY command - last of >1 screen 2.1%
10. DISPLAY command-complete in one screen 2.1%
11. All others 31.6%
Ten most frequent SHOW requests:
1. HISTORY 31.4%
2. SEARCH 13.6%
3. TIME 9.6%
4. GLOSSARY 8.6%
5. SETTINGS 4.0%
6. SYSTEM NEWS 3.2%
7. MAIL STATUS 2.3%
8. SYSTEMS INFORMATION 2.0%
9. DATABASE NEWS 1.4%
10. MEDLINE NEWS 1.4%
11. All others 22.5%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)