MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 05/11/02 through 05/17/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 373 1,606 1,979
Davis 1,061 101 1,162
Irvine 325 0 325
Los Angeles 10 356 366
Riverside 303 43 346
San Diego 270 122 392
San Francisco 103 0 103
Santa Barbara 235 65 300
Santa Cruz 184 160 344
LBL 0 48 48
LLL 0 58 58
Other - UC 13 168 181
CSL 0 98 98
CSU n/a 106 106
Other-Non-UC n/a 2,988 2,988
_______ ______ _____
2,877 5,919 8,796
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 163 567 3,447
2-4 a.m. 176 560 3,742
4-6 a.m. 142 800 4,042
6-8 a.m. 326 1,434 9,191
8-10 a.m. 1,188 4,735 28,936
10-12 a.m. 1,776 7,142 50,575
12-2 p.m. 1,334 5,977 40,968
2-4 p.m. 1,567 6,761 43,759
4-6 p.m. 1,089 5,201 34,333
6-8 p.m. 429 1,996 14,143
8-10 p.m. 317 1,157 8,401
10-12 p.m. 289 1,453 11,259
__________ __________ __________ _________________
Total: 8,796 37,783 252,796
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 988 5,577 6,565
Davis 3,738 466 4,204
Irvine 1,489 0 1,489
Los Angeles 24 1,100 1,124
Riverside 1,858 181 2,039
San Diego 986 250 1,236
San Francisco 409 0 409
Santa Barbara 1,213 146 1,359
Santa Cruz 2,809 1,708 4,517
LBL 0 59 59
LLL 0 95 95
Other - UC 27 501 528
CSL 0 178 178
CSU n/a 327 327
Other-Non-UC n/a 13,654 13,654
_______ ______ _____
13,541 24,242 37,783
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,306 41,113 49,419
Davis 26,492 2,351 28,843
Irvine 11,101 0 11,101
Los Angeles 70 8,728 8,798
Riverside 9,437 749 10,186
San Diego 4,549 2,908 7,457
San Francisco 2,785 0 2,785
Santa Barbara 9,355 789 10,144
Santa Cruz 7,079 8,614 15,693
LBL 0 348 348
LLL 0 730 730
Other - UC 84 5,131 5,215
CSL 0 1,318 1,318
CSU n/a 3,910 3,910
Other-Non-UC n/a 96,849 96,849
_______ ______ _____
79,258 173,538 252,796
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 2.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 1.2
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:17
Average session length (minutes:seconds) 16:04
Longest session recorded (minutes:seconds) 879:07
Average number of searches completed per session 4.2
Retrievals per search - median 2.0
Retrievals per search - average 47.4
Retrievals per search - standard deviation 811.4
Percent of searches completed with 0 results 27.2%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 67.8%
Commands entered, by type, excluding errors:
Total Percentage
FIND 36,424 38.8%
DISPLAY (excluding automatic displays) 31,115 33.1%
ACFIND 6 0.0%
BROWSE 193 0.2%
SELECT 167 0.2%
HELP 458 0.5%
EXPLAIN 472 0.5%
SET/RESET 1,801 1.9%
SHOW 181 0.2%
AT 1,894 2.0%
ADD ON (AND, OR, AND NOT) 1,335 1.4%
LOGON or LOGOFF 15,421 16.4%
COMMENT 0 0.0%
SAVE 545 0.6%
USE 566 0.6%
OTHER 3,346 3.6%
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 5,393 14.2% 1,313 24.3% 10 74.4 403.2
AUTHOR 1,297 3.4% 345 26.6% 11 104.9 697.3
CORPORATE AUTH 298 0.8% 103 34.6% 17 1252.9 9487.9
EXACT CA 12 0.0% 6 50.0% 52 379.2 823.9
TITLE WORD 8,342 21.9% 2,516 30.2% 4 41.2 353.3
EXACT TITLE 7,921 20.8% 2,348 29.6% 1 13.8 103.8
TITLE -> TW 847 2.2% 204 24.1% 9 50.9 209.3
TITLE -> XT 924 2.4% 401 43.4% 1 17.4 206.0
SUBJECT 1,293 3.4% 449 34.7% 45 356.7 1126.5
EXACT SUBJECT 87 0.2% 25 28.7% 42 304.0 738.0
PERIODICAL 6,493 17.0% 1,420 21.9% 5 62.0 822.2
EXACT PE 2,597 6.8% 407 15.7% 3 16.5 146.0
RPE 1 0.0% 0 0.0% 1 1.0 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 0.1% 3 6.8% 20 199.2 605.1
DATE 620 1.6% 121 19.5% 2 32.5 377.3
FORM 321 0.8% 61 19.0% 19 84.6 258.8
NUMBER* 33 0.1% 16 48.5% 4 74.8 249.5
MUSIC* 4 0.0% 3 75.0% 190 190.0 0.0
SERIES 743 2.0% 251 33.8% 4 68.9 324.1
UNIFORM TITLE 4 0.0% 1 25.0% 11 11.0 1.0
Other indexes 812 2.1% 339 41.7% 1 6.3 36.6
* 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 1,982 5.5% 485 24.5% 3 43.5 340.4
Single 34,024 94.5% 9,341 27.5% 4 65.7 988.8
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 13 7.3% 4 30.8% 22 106.2 163.9
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 150 83.8% 22 14.7% 42 165.2 310.8
EXACT SUBJECT 8 4.5% 1 12.5% 103 152.9 126.7
UNIFORM TITLE 1 0.6% 0 0.0% 413 413.0 0.0
SERIES 7 3.9% 1 14.3% 1 31.2 47.9
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 182 100% 28 15.4% 40 154.7 289.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.9%
BRIEF 68.9%
LONG 9.7%
MARC 3.0%
FIELDS 3.1%
TAG 2.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.3%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.5%
Ten most frequent errors:
1. NS command - no next screen 33.8%
2. First word of command is invalid 25.5%
3. FIND command with invalid index name 11.4%
4. DISPLAY command contains invalid word 5.2%
5. Search term missing from search command 3.0%
6. PS command - no previous screen 1.7%
7. Valid command at an inappropriate time 1.6%
8. DISPLAY command - no FIND results 1.6%
9. Command contains escape or arrow key 1.3%
10. Index invalid in current database 1.0%
11. All others 13.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 35.0%
2. FIND 12.5%
3. Unrecognized term 5.9%
4. COMMAND WORDS 4.2%
5. INDEXES 4.0%
6. PASSWORDS 3.8%
7. NRLF 2.5%
8. DATABASES 2.5%
9. AT 2.3%
10. DISPLAY 2.3%
11. All others 24.8%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 26.5%
2. FIND command with invalid index name 12.4%
3. First word of command is invalid 11.6%
4. DISPLAY command - middle of >1 screen 4.6%
5. FIND command retrieves >1 book 4.1%
6. NS command - no next screen 3.0%
7. DISPLAY command-first of >1 screen 2.2%
8. FIND command retrieves 1 book 2.0%
9. DISPLAY command-complete in one screen 1.9%
10. DISPLAY command - last of >1 screen 1.8%
11. All others 29.9%
Ten most frequent SHOW requests:
1. HISTORY 38.0%
2. MAIL STATUS 20.5%
3. SEARCH 14.0%
4. SETTINGS 5.8%
5. GLOSSARY 5.3%
6. TIME 4.7%
7. DATABASE NEWS 1.8%
8. SYSTEM NEWS 1.2%
9. 5010 1.2%
10. DATABASES 1.2%
11. All others 6.4%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)