MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 07/21/01 through 07/27/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 589 2,202 2,791
Davis 1,442 200 1,642
Irvine 681 0 681
Los Angeles 8 515 523
Riverside 413 111 524
San Diego 451 179 630
San Francisco 273 0 273
Santa Barbara 226 122 348
Santa Cruz 299 129 428
LBL 0 101 101
LLL 0 73 73
Other - UC 50 174 224
CSL 0 144 144
CSU n/a 200 200
Other-Non-UC n/a 4,173 4,173
_______ ______ _____
4,432 8,323 12,755
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 256 649 4,926
2-4 a.m. 204 739 4,360
4-6 a.m. 235 794 4,408
6-8 a.m. 449 1,464 -2,734
8-10 a.m. 1,655 5,344 80,560
10-12 a.m. 2,400 7,916 182,539
12-2 p.m. 2,131 7,512 102,093
2-4 p.m. 2,616 9,301 70,147
4-6 p.m. 1,546 5,394 64,538
6-8 p.m. 504 1,328 52,127
8-10 p.m. 349 914 8,568
10-12 p.m. 410 764 6,227
__________ __________ __________ _________________
Total: 12,755 42,119 577,759
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,495 7,065 8,560
Davis 6,247 582 6,829
Irvine 2,226 0 2,226
Los Angeles 12 1,270 1,282
Riverside 1,347 266 1,613
San Diego 2,856 361 3,217
San Francisco 366 0 366
Santa Barbara 825 253 1,078
Santa Cruz 1,718 303 2,021
LBL 0 99 99
LLL 0 231 231
Other - UC 54 459 513
CSL 0 219 219
CSU n/a 545 545
Other-Non-UC n/a 13,320 13,320
_______ ______ _____
17,146 24,973 42,119
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,585 52,666 64,251
Davis 37,670 2,512 40,182
Irvine 14,622 0 14,622
Los Angeles 106 9,555 9,661
Riverside 10,032 3,027 13,059
San Diego 13,857 3,894 17,751
San Francisco 3,150 0 3,150
Santa Barbara 6,398 2,715 9,113
Santa Cruz 7,351 3,402 10,753
LBL 0 1,468 1,468
LLL 0 2,150 2,150
Other - UC 1,100 4,672 5,772
CSL 0 1,767 1,767
CSU n/a 5,469 5,469
Other-Non-UC n/a 378,591 378,591
_______ ______ _____
105,871 471,888 577,759
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 2.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.9
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:49
Average session length (minutes:seconds) 14:57
Longest session recorded (minutes:seconds) 973:09
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 56.9
Retrievals per search - standard deviation 736.4
Percent of searches completed with 0 results 25.7%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 63.0%
Commands entered, by type, excluding errors:
Total Percentage
FIND 40,196 35.0%
DISPLAY (excluding automatic displays) 37,425 32.6%
ACFIND 9 0.0%
BROWSE 438 0.4%
SELECT 201 0.2%
HELP 618 0.5%
EXPLAIN 756 0.7%
SET/RESET 3,618 3.2%
SHOW 205 0.2%
AT 2,713 2.4%
ADD ON (AND, OR, AND NOT) 1,904 1.7%
LOGON or LOGOFF 20,059 17.5%
COMMENT 0 0.0%
SAVE 1,159 1.0%
USE 853 0.7%
OTHER 4,587 4.0%
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 6,423 15.3% 1,559 24.3% 9 67.1 312.0
AUTHOR 1,589 3.8% 347 21.8% 14 144.0 664.3
CORPORATE AUTH 491 1.2% 172 35.0% 15 505.6 2729.7
EXACT CA 9 0.0% 6 66.7% 4 10.7 12.4
TITLE WORD 10,214 24.3% 2,990 29.3% 3 37.5 285.3
EXACT TITLE 6,523 15.5% 1,787 27.4% 2 17.7 123.4
TITLE -> TW 903 2.1% 225 24.9% 10 70.7 403.3
TITLE -> XT 1,241 3.0% 547 44.1% 1 7.5 49.6
SUBJECT 1,411 3.4% 491 34.8% 67 506.1 2695.9
EXACT SUBJECT 83 0.2% 17 20.5% 40 243.7 510.0
PERIODICAL 7,335 17.5% 1,388 18.9% 4 92.0 1110.6
EXACT PE 2,698 6.4% 449 16.6% 2 16.9 89.2
RPE 6 0.0% 0 0.0% 12 16.5 17.1
XRP 2 0.0% 0 0.0% 12 12.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 38 0.1% 5 13.2% 51 303.3 1007.3
DATE 546 1.3% 122 22.3% 3 76.2 391.1
FORM 499 1.2% 111 22.2% 10 136.7 594.3
NUMBER* 25 0.1% 15 60.0% 7 77.8 144.2
MUSIC* 22 0.1% 13 59.1% 2 36.7 103.6
SERIES 939 2.2% 264 28.1% 3 93.4 969.9
UNIFORM TITLE 7 0.0% 5 71.4% 11 11.0 9.9
Other indexes 1,017 2.4% 423 41.6% 1 7.1 97.0
* 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 2,298 5.8% 594 25.8% 3 53.6 335.5
Single 37,314 94.2% 9,719 26.0% 4 76.7 829.4
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 76 19.6% 10 13.2% 4 22.1 93.6
CORPORATE AUTH 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CA 1 0.3% 0 0.0% 1 1.0 0.0
SUBJECT 281 72.6% 46 16.4% 97 7382.0 20012.4
EXACT SUBJECT 19 4.9% 2 10.5% 13 226.9 843.4
UNIFORM TITLE 1 0.3% 1 100% 0 0.0 0.0
SERIES 9 2.3% 2 22.2% 36 84.4 142.3
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 395 100% 61 15.4% 34 5212.0 17107.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.3%
BRIEF 66.4%
LONG 11.1%
MARC 3.3%
FIELDS 2.4%
TAG 3.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.8%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.1%
Ten most frequent errors:
1. NS command - no next screen 32.7%
2. First word of command is invalid 23.8%
3. FIND command with invalid index name 10.8%
4. DISPLAY command contains invalid word 4.4%
5. Max. # of ports to a Z39 db are in use 2.4%
6. Search term missing from search command 2.3%
7. PS command - no previous screen 1.9%
8. KW search in database w/o KW index 1.8%
9. Valid command at an inappropriate time 1.7%
10. DISPLAY command - no FIND results 1.5%
11. All others 16.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.7%
2. FIND 13.6%
3. INDEXES 6.9%
4. Unrecognized term 6.0%
5. COMMAND WORDS 5.0%
6. PASSWORDS 4.5%
7. DATABASES 4.2%
8. 1714 2.9%
9. DISPLAY 2.6%
10. NRLF 1.9%
11. All others 30.7%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 26.7%
2. First word of command is invalid 14.5%
3. FIND command with invalid index name 11.4%
4. DISPLAY command - middle of >1 screen 3.0%
5. NS command - no next screen 2.8%
6. FIND command retrieves >1 book 2.6%
7. DISPLAY command-first of >1 screen 2.5%
8. DISPLAY command - last of >1 screen 2.4%
9. TW search with zero results 2.3%
10. F/BR with index invalid in current DB 2.3%
11. All others 29.6%
Ten most frequent SHOW requests:
1. HISTORY 56.9%
2. SEARCH 9.1%
3. GLOSSARY 8.6%
4. DATABASE NEWS 5.1%
5. SETTINGS 3.6%
6. MAIL STATUS 2.5%
7. SYSTEM NEWS 2.0%
8. UCSF PASSWORDS 1.0%
9. 0408 1.0%
10. DISPLAY 1.0%
11. All others 9.1%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)