MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 01/27/01 through 02/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 67 838 905
Davis 398 18 416
Irvine 332 0 332
Los Angeles 27 271 298
Riverside 54 95 149
San Diego 67 271 338
San Francisco 179 0 179
Santa Barbara 38 191 229
Santa Cruz 40 133 173
LBL 0 132 132
LLL 0 85 85
Los Alamos n/a 0 0
Other - UC 0 31 31
U.S. Forestry 0
Other-Network UC n/a 614 614
_______ ______ _____
1,202 2,679 3,881
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 71 207 1,467
2-4 a.m. 48 157 2,348
4-6 a.m. 72 234 2,510
6-8 a.m. 145 834 7,763
8-10 a.m. 464 1,505 13,658
10-12 a.m. 718 1,817 19,365
12-2 p.m. 677 1,779 16,082
2-4 p.m. 698 1,811 20,161
4-6 p.m. 471 1,281 17,021
6-8 p.m. 263 613 7,987
8-10 p.m. 160 616 7,280
10-12 p.m. 94 267 2,394
__________ __________ __________ _________________
Total: 3,881 11,121 118,036
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 166 2,181 2,347
Davis 1,077 68 1,145
Irvine 979 0 979
Los Angeles 70 760 830
Riverside 96 332 428
San Diego 146 676 822
San Francisco 425 0 425
Santa Barbara 85 602 687
Santa Cruz 94 543 637
LBL 0 336 336
LLL 0 845 845
Los Alamos n/a 0 0
Other - UC 0 87 87
U.S. Forestry 0
Other-Network UC n/a 1,553 1,553
_______ ______ _____
3,138 7,983 11,121
Number of FIND commands by database
CC database 10,816
CCT database 305
Total number of FIND commands 11,121
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,603 25,502 27,105
Davis 13,334 283 13,617
Irvine 7,082 0 7,082
Los Angeles 215 7,341 7,556
Riverside 966 2,997 3,963
San Diego 1,027 6,480 7,507
San Francisco 3,896 0 3,896
Santa Barbara 335 6,838 7,173
Santa Cruz 1,830 6,399 8,229
LBL 0 6,227 6,227
LLL 0 8,728 8,728
Los Alamos n/a 0 0
Other - UC 0 682 682
U.S. Forestry 0
Other-Network UC n/a 16,271 16,271
_______ ______ _____
30,288 87,748 118,036
Number of Records Displayed by database:
CC database 104,301
CCT database 13,735
Total number of Records Displayed 118,036
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 94.9%
Percent of CCT sessions 5.1%
Percent of searches done in the CC database 97.3%
Percent of searches done in the CCT database 2.7%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 4.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 4.6
2.0 CC Database Statistics
___________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 470:22
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 422.9
Retrievals per search - standard deviation 3803.3
Percent of searches completed with 0 results 24.4%
Percent of searches entered that are long 0.5%
Percent of long searches completed
(includes partial results) 54.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 10,110 37.8%
DISPLAY (excluding automatic displays) 7,804 29.1%
HELP 211 0.8%
EXPLAIN 271 1.0%
SET/RESET 1,448 5.4%
SHOW 51 0.2%
ADD ON (AND, OR, AND NOT) 706 2.6%
LOGON or LOGOFF 4,707 17.6%
COMMENT 0 0.0%
SAVE 257 1.0%
USE 9 0.0%
OTHER 1,207 4.5%
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 AUTHOR 5,057 43.9% 754 14.9% 31 224.7 1246.7
TITLE WORD 3,376 29.3% 1,048 31.0% 15 575.7 3222.0
EXACT TITLE 127 1.1% 70 55.1% 4 61.2 153.5
JOURNAL 482 4.2% 203 42.1% 170 4286.0 13666.9
EXACT JOURNAL 518 4.5% 316 61.0% 47 1674.5 5926.4
SUBJECT CAT 91 0.8% 20 22.0% 10 138.6 579.2
SUBFILE 29 0.3% 1 3.4% 14 1110.0 4086.0
PUBLICATION TYPE 68 0.6% 10 14.7% 17 6697.1 30642.9
LANGUAGE 2 0.0% 0 0.0% 2,101 2100.5 1703.4
DATE 154 1.3% 22 14.3% 22 708.9 1910.9
ADDED 606 5.3% 403 66.5% 22 34.8 38.1
PERIODICAL 356 3.1% 64 18.0% 5 37.1 137.6
EXACT PE 96 0.8% 14 14.6% 2 20.9 133.5
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 551 4.8% 140 25.4% 16 585.3 2896.9
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 1,428 14.2% 627 43.9% 10 194.2 1142.2
Single 8,641 85.8% 1,804 20.9% 29 631.4 4721.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.8%
SHORT 78.0%
LONG 6.3%
FIELDS 1.7%
PERIODICALS 7.8%
COMMENTS 0.0%
Other 1.3%
2.1 CCT Database Statistics
____________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 68:12
Average number of searches completed per session 1.5
Retrievals per search - median 59.0
Retrievals per search - average 661.0
Retrievals per search - standard deviation 2344.8
Percent of searches completed with 0 results 19.0%
Percent of searches entered that are long 0.0%
Percent of long searches completed
(includes partial results) 0.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 295 20.9%
DISPLAY (excluding automatic displays) 568 40.3%
HELP 97 6.9%
EXPLAIN 54 3.8%
SET/RESET 99 7.0%
SHOW 6 0.4%
ADD ON (AND, OR, AND NOT) 10 0.7%
LOGON or LOGOFF 230 16.3%
COMMENT 0 0.0%
SAVE 2 0.1%
USE 0 0.0%
OTHER 47 3.3%
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:
JOURNAL 227 76.2% 47 20.7% 85 353.7 1061.2
EXACT JOURNAL 47 15.8% 8 17.0% 69 220.4 425.7
SUBJECT CAT 14 4.7% 0 0.0% 3,885 8049.2 6904.9
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 3 1.0% 0 0.0% 1,319 1266.7 90.6
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 7 2.3% 0 0.0% 4 14.9 21.6
By number of indexes:
Multiple 3 1.0% 0 0.0% 1,319 1266.7 90.6
Single 292 99.0% 55 18.8% 83 764.8 2617.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.9%
ISSUES 42.2%
SHORT 19.2%
LONG 24.6%
PERIODICALS 1.8%
COMMENTS 0.0%
Other 1.4%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
__________________________________________________
Percent of commands that contained errors 8.4%
Ten most frequent errors:
1. NS command - no next screen 33.2%
2. First word of command is invalid 26.6%
3. FIND command with invalid index name 8.7%
4. Index invalid in current database 3.5%
5. PS command - no previous screen 2.4%
6. Valid command at an inappropriate time 2.2%
7. DISPLAY command - no FIND results 2.1%
8. DISPLAY command contains invalid word 2.1%
9. Search term missing from search command 2.0%
10. Max. # of ports to a Z39 db are in use 2.0%
11. All others 15.1%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 16.0%
2. FIND (CC DB) 14.2%
3. CC INDEXES 10.8%
4. SUBJECT CATEGORY 5.8%
5. LOCATE (ARTICLE DBS) 5.2%
6. CCT DATABASE 4.6%
7. COMMANDS 4.3%
8. Unrecognized term 3.4%
9. CCT INDEXES 2.8%
10. MAIL 2.2%
11. All others 30.8%
Ten most frequent HELP situations:
1. First word of command is invalid 15.8%
2. Help requested from START CC command 13.6%
3. Help requested from SET DB command 8.7%
4. FIND command with invalid index name 7.6%
5. DISPLAY command-first of >1 screen 6.5%
6. F/BR with index invalid in current DB 6.3%
7. FIND command with zero results 3.9%
8. NS of SHOW/EXP command-no next screen 3.9%
9. DISPLAY command - middle of >1 screen 3.8%
10. NS command - no next screen 2.7%
11. All others 27.2%
Ten most frequent SHOW requests:
1. HISTORY 51.9%
2. MAIL STATUS 16.7%
3. SC LIST (CC DBS) 11.1%
4. CC SETTINGS 5.6%
5. Z39.50 NEWS 1.9%
6. UCSF PASSWORDS 1.9%
7. GLOSSARY 1.9%
8. SYSTEM NEWS 1.9%
9. CCT SETTINGS 1.9%
10. CC GLOSSARY 1.9%
11. All others 3.7%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)