MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 06/08/02 through 06/14/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 308 1,040 1,348
Davis 729 108 837
Irvine 190 0 190
Los Angeles 1 242 243
Riverside 213 36 249
San Diego 186 82 268
San Francisco 97 0 97
Santa Barbara 120 46 166
Santa Cruz 80 91 171
LBL 0 50 50
LLL 0 17 17
Other - UC 19 142 161
CSL 0 57 57
CSU n/a 73 73
Other-Non-UC n/a 2,183 2,183
_______ ______ _____
1,943 4,167 6,110
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 140 484 4,798
2-4 a.m. 122 355 3,754
4-6 a.m. 116 350 2,584
6-8 a.m. 256 773 7,827
8-10 a.m. 888 3,365 24,977
10-12 a.m. 1,312 5,395 37,161
12-2 p.m. 1,011 3,929 26,032
2-4 p.m. 1,047 3,851 32,557
4-6 p.m. 608 2,344 18,543
6-8 p.m. 232 609 6,277
8-10 p.m. 184 628 4,499
10-12 p.m. 194 676 5,996
__________ __________ __________ _________________
Total: 6,110 22,759 175,005
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 703 3,447 4,150
Davis 2,622 526 3,148
Irvine 1,000 0 1,000
Los Angeles 10 407 417
Riverside 1,085 71 1,156
San Diego 540 211 751
San Francisco 307 0 307
Santa Barbara 375 86 461
Santa Cruz 908 376 1,284
LBL 0 70 70
LLL 0 31 31
Other - UC 38 693 731
CSL 0 102 102
CSU n/a 295 295
Other-Non-UC n/a 8,856 8,856
_______ ______ _____
7,588 15,171 22,759
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,504 25,792 31,296
Davis 20,944 3,027 23,971
Irvine 8,165 0 8,165
Los Angeles 33 3,879 3,912
Riverside 6,076 610 6,686
San Diego 3,792 2,844 6,636
San Francisco 1,677 0 1,677
Santa Barbara 4,169 927 5,096
Santa Cruz 1,838 3,585 5,423
LBL 0 615 615
LLL 0 316 316
Other - UC 376 3,357 3,733
CSL 0 1,247 1,247
CSU n/a 2,976 2,976
Other-Non-UC n/a 73,256 73,256
_______ ______ _____
52,574 122,431 175,005
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 2.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:30
Average session length (minutes:seconds) 17:11
Longest session recorded (minutes:seconds) 863:53
Average number of searches completed per session 3.7
Retrievals per search - median 2.0
Retrievals per search - average 61.6
Retrievals per search - standard deviation 887.4
Percent of searches completed with 0 results 26.4%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 66.1%
Commands entered, by type, excluding errors:
Total Percentage
FIND 22,092 36.5%
DISPLAY (excluding automatic displays) 20,866 34.5%
ACFIND 3 0.0%
BROWSE 72 0.1%
SELECT 41 0.1%
HELP 338 0.6%
EXPLAIN 320 0.5%
SET/RESET 1,140 1.9%
SHOW 94 0.2%
AT 1,017 1.7%
ADD ON (AND, OR, AND NOT) 664 1.1%
LOGON or LOGOFF 10,792 17.8%
COMMENT 0 0.0%
SAVE 329 0.5%
USE 374 0.6%
OTHER 2,358 3.9%
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 2,992 13.1% 712 23.8% 10 76.7 274.7
AUTHOR 990 4.3% 249 25.1% 11 105.4 324.4
CORPORATE AUTH 157 0.7% 52 33.1% 15 1667.3 9339.3
EXACT CA 2 0.0% 0 0.0% 15 14.5 6.4
TITLE WORD 4,811 21.0% 1,560 32.4% 4 54.8 632.9
EXACT TITLE 3,380 14.8% 887 26.2% 2 21.1 175.6
TITLE -> TW 671 2.9% 188 28.0% 8 55.2 108.5
TITLE -> XT 842 3.7% 371 44.1% 1 10.9 91.8
SUBJECT 989 4.3% 324 32.8% 48 479.5 1798.3
EXACT SUBJECT 49 0.2% 11 22.4% 102 541.2 996.6
PERIODICAL 4,547 19.9% 966 21.2% 4 65.9 860.4
EXACT PE 2,051 9.0% 253 12.3% 2 14.6 91.3
RPE 2 0.0% 1 50.0% 12 12.0 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
LANGUAGE 44 0.2% 10 22.7% 24 148.8 351.3
DATE 226 1.0% 60 26.5% 4 154.7 821.8
FORM 145 0.6% 38 26.2% 13 363.2 2314.2
NUMBER* 4 0.0% 1 25.0% 1 1298.3 2247.0
MUSIC* 1 0.0% 1 100% 0 0.0 0.0
SERIES 476 2.1% 156 32.8% 2 47.2 158.6
UNIFORM TITLE 8 0.0% 2 25.0% 6 70.7 112.1
Other indexes 473 2.1% 223 47.1% 1 26.2 187.3
* 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 933 4.3% 252 27.0% 3 98.9 1006.6
Single 20,917 95.7% 5,542 26.5% 4 81.1 997.7
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 16 26.2% 5 31.3% 7 23.8 36.3
CORPORATE AUTH 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 41 67.2% 8 19.5% 30 348.4 774.0
EXACT SUBJECT 3 4.9% 0 0.0% 8 105.7 174.4
UNIFORM TITLE 1 1.6% 1 100% 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 65 100% 14 21.5% 16 237.3 639.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.7%
BRIEF 66.9%
LONG 8.8%
MARC 4.1%
FIELDS 3.6%
TAG 2.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.5%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.6%
Ten most frequent errors:
1. NS command - no next screen 32.8%
2. First word of command is invalid 27.8%
3. FIND command with invalid index name 12.4%
4. DISPLAY command contains invalid word 4.7%
5. Search term missing from search command 2.6%
6. PS command - no previous screen 1.9%
7. DISPLAY command - no FIND results 1.6%
8. Valid command at an inappropriate time 1.2%
9. KW search in database w/o KW index 1.1%
10. 177 1.0%
11. All others 13.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.9%
2. FIND 17.2%
3. INDEXES 13.1%
4. PASSWORDS 5.0%
5. COMMAND WORDS 4.4%
6. DISPLAY 4.1%
7. Unrecognized term 3.8%
8. CATALOG 3.1%
9. DATABASES 2.2%
10. 1773 1.3%
11. All others 24.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 20.2%
2. First word of command is invalid 17.3%
3. FIND command with invalid index name 13.2%
4. DISPLAY command - middle of >1 screen 4.1%
5. TW search with zero results 4.1%
6. NS command - no next screen 2.9%
7. DISPLAY command-first of >1 screen 2.6%
8. FIND command retrieves >1 book 2.3%
9. SU search with zero results 2.1%
10. F/BR with index invalid in current DB 2.0%
11. All others 29.2%
Ten most frequent SHOW requests:
1. HISTORY 55.4%
2. SETTINGS 6.5%
3. SEARCH 6.5%
4. GLOSSARY 4.3%
5. MAIL SETTINGS 3.3%
6. INSPEC LOADING STATISTICS 2.2%
7. 0210 2.2%
8. DATABASE NEWS 2.2%
9. 2292 2.2%
10. CC NEWS 2.2%
11. All others 13.0%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)