MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 10/27/01 through 11/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 736 2,376 3,112
Davis 1,992 220 2,212
Irvine 596 0 596
Los Angeles 9 503 512
Riverside 438 71 509
San Diego 322 127 449
San Francisco 229 0 229
Santa Barbara 238 123 361
Santa Cruz 175 181 356
LBL 0 107 107
LLL 0 95 95
Other - UC 20 256 276
CSL 0 163 163
CSU n/a 150 150
Other-Non-UC n/a 3,557 3,557
_______ ______ _____
4,755 7,929 12,684
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 189 470 4,914
2-4 a.m. 209 481 4,134
4-6 a.m. 178 495 3,648
6-8 a.m. 401 1,094 8,645
8-10 a.m. 1,569 5,083 30,919
10-12 a.m. 2,428 8,573 59,367
12-2 p.m. 2,273 7,488 54,595
2-4 p.m. 2,626 8,404 56,730
4-6 p.m. 1,497 4,754 34,243
6-8 p.m. 605 1,999 14,975
8-10 p.m. 430 1,201 12,317
10-12 p.m. 279 743 9,669
__________ __________ __________ _________________
Total: 12,684 40,785 294,156
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,115 6,470 8,585
Davis 7,177 812 7,989
Irvine 2,050 0 2,050
Los Angeles 1 1,043 1,044
Riverside 1,499 187 1,686
San Diego 881 242 1,123
San Francisco 312 0 312
Santa Barbara 1,263 326 1,589
Santa Cruz 1,886 429 2,315
LBL 0 107 107
LLL 0 253 253
Other - UC 15 652 667
CSL 0 186 186
CSU n/a 694 694
Other-Non-UC n/a 12,185 12,185
_______ ______ _____
17,199 23,586 40,785
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 16,032 47,812 63,844
Davis 36,727 3,508 40,235
Irvine 12,846 0 12,846
Los Angeles 12 12,990 13,002
Riverside 11,945 1,352 13,297
San Diego 5,366 1,930 7,296
San Francisco 2,442 0 2,442
Santa Barbara 9,776 4,011 13,787
Santa Cruz 5,973 3,969 9,942
LBL 0 1,000 1,000
LLL 0 2,163 2,163
Other - UC 49 4,862 4,911
CSL 0 1,362 1,362
CSU n/a 9,001 9,001
Other-Non-UC n/a 99,028 99,028
_______ ______ _____
101,168 192,988 294,156
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 5.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:41
Average session length (minutes:seconds) 14:35
Longest session recorded (minutes:seconds) 1067
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 82.6
Retrievals per search - standard deviation 1846.0
Percent of searches completed with 0 results 26.6%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 65.4%
Commands entered, by type, excluding errors:
Total Percentage
FIND 39,404 35.3%
DISPLAY (excluding automatic displays) 36,600 32.8%
ACFIND 25 0.0%
BROWSE 202 0.2%
SELECT 117 0.1%
HELP 727 0.7%
EXPLAIN 736 0.7%
SET/RESET 3,254 2.9%
SHOW 227 0.2%
AT 2,441 2.2%
ADD ON (AND, OR, AND NOT) 1,348 1.2%
LOGON or LOGOFF 20,344 18.2%
COMMENT 0 0.0%
SAVE 722 0.6%
USE 848 0.8%
OTHER 4,624 4.1%
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 5,729 13.9% 1,425 24.9% 10 77.6 362.9
AUTHOR 1,434 3.5% 385 26.8% 10 148.8 698.9
CORPORATE AUTH 540 1.3% 207 38.3% 20 569.6 1983.8
EXACT CA 53 0.1% 6 11.3% 3 38.7 107.9
TITLE WORD 9,255 22.4% 2,989 32.3% 4 51.7 740.6
EXACT TITLE 6,633 16.1% 1,871 28.2% 2 19.2 126.0
TITLE -> TW 1,005 2.4% 246 24.5% 8 52.3 159.1
TITLE -> XT 1,238 3.0% 513 41.4% 1 4.4 9.1
SUBJECT 1,915 4.6% 645 33.7% 38 364.6 1959.2
EXACT SUBJECT 147 0.4% 31 21.1% 59 399.8 781.4
PERIODICAL 7,395 17.9% 1,451 19.6% 5 123.4 1512.7
EXACT PE 2,907 7.0% 428 14.7% 2 22.3 289.5
RPE 7 0.0% 4 57.1% 2 2.0 1.0
XRP 2 0.0% 1 50.0% 3 3.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 63 0.2% 10 15.9% 109 392.4 789.1
DATE 718 1.7% 151 21.0% 4 104.4 1183.5
FORM 415 1.0% 80 19.3% 18 303.9 2901.1
NUMBER* 15 0.0% 6 40.0% 2 5.8 7.1
MUSIC* 6 0.0% 3 50.0% 289 546.3 618.5
SERIES 923 2.2% 252 27.3% 3 845.9 12068.6
UNIFORM TITLE 10 0.0% 2 20.0% 8 107.1 219.6
Other indexes 900 2.2% 349 38.8% 1 14.0 190.9
* 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 2,302 5.9% 588 25.5% 4 62.8 697.6
Single 36,554 94.1% 9,849 26.9% 4 110.5 2161.9
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 15 8.3% 2 13.3% 11 51.6 98.6
CORPORATE AUTH 2 1.1% 1 50.0% 6 6.0 0.0
EXACT CA 2 1.1% 0 0.0% 42 41.5 12.0
SUBJECT 146 80.7% 33 22.6% 49 156.8 332.0
EXACT SUBJECT 15 8.3% 3 20.0% 23 111.0 280.5
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.6% 0 0.0% 1 1.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 187 100% 40 21.4% 26 135.5 305.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.8%
BRIEF 66.8%
LONG 8.9%
MARC 3.9%
FIELDS 2.9%
TAG 3.8%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.9%
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 32.1%
2. First word of command is invalid 26.6%
3. FIND command with invalid index name 11.7%
4. DISPLAY command contains invalid word 3.9%
5. Search term missing from search command 2.6%
6. PS command - no previous screen 2.3%
7. Valid command at an inappropriate time 1.8%
8. Max. # of ports to a Z39 db are in use 1.7%
9. KW search in database w/o KW index 1.7%
10. DISPLAY command - no FIND results 1.4%
11. All others 14.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.9%
2. FIND 11.8%
3. COMMAND WORDS 7.7%
4. Unrecognized term 6.5%
5. PASSWORDS 6.5%
6. INDEXES 6.4%
7. DATABASES 3.1%
8. DATES 2.4%
9. ADD-ON SEARCH 1.9%
10. DISPLAY 1.9%
11. All others 24.7%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 27.1%
2. First word of command is invalid 13.5%
3. FIND command with invalid index name 13.3%
4. DISPLAY command - middle of >1 screen 4.9%
5. DISPLAY command-first of >1 screen 3.1%
6. FIND command retrieves >1 book 2.6%
7. NS command - no next screen 2.4%
8. DISPLAY command-complete in one screen 2.0%
9. DISPLAY command - last of >1 screen 1.8%
10. SU search with zero results 1.8%
11. All others 27.4%
Ten most frequent SHOW requests:
1. HISTORY 51.1%
2. SEARCH 7.8%
3. GLOSSARY 7.3%
4. SETTINGS 6.4%
5. SYSTEMS INFORMATION 3.2%
6. MEDLINE NEWS 2.7%
7. DATABASE NEWS 2.3%
8. UCSF PASSWORDS 1.8%
9. NEWS 1.8%
10. MAIL STATUS 1.8%
11. All others 13.7%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)