MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 10/06/01 through 10/12/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 671 2,438 3,109
Davis 1,970 263 2,233
Irvine 674 0 674
Los Angeles 10 482 492
Riverside 392 104 496
San Diego 347 141 488
San Francisco 231 0 231
Santa Barbara 225 146 371
Santa Cruz 215 176 391
LBL 0 100 100
LLL 0 68 68
Other - UC 53 237 290
CSL 0 113 113
CSU n/a 173 173
Other-Non-UC n/a 3,610 3,610
_______ ______ _____
4,788 8,051 12,839
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 240 655 5,818
2-4 a.m. 150 419 3,849
4-6 a.m. 195 449 3,496
6-8 a.m. 362 969 8,140
8-10 a.m. 1,572 5,011 35,659
10-12 a.m. 2,418 9,117 59,493
12-2 p.m. 2,398 8,616 50,235
2-4 p.m. 2,580 9,302 65,067
4-6 p.m. 1,645 5,627 38,444
6-8 p.m. 586 1,792 16,427
8-10 p.m. 387 1,241 16,667
10-12 p.m. 306 915 7,154
__________ __________ __________ _________________
Total: 12,839 44,113 310,449
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,904 6,940 8,844
Davis 8,227 914 9,141
Irvine 2,264 0 2,264
Los Angeles 16 1,108 1,124
Riverside 1,719 239 1,958
San Diego 1,417 249 1,666
San Francisco 401 0 401
Santa Barbara 1,008 318 1,326
Santa Cruz 2,331 400 2,731
LBL 0 141 141
LLL 0 201 201
Other - UC 31 748 779
CSL 0 98 98
CSU n/a 821 821
Other-Non-UC n/a 12,618 12,618
_______ ______ _____
19,318 24,795 44,113
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,064 50,881 65,945
Davis 44,165 4,035 48,200
Irvine 15,488 0 15,488
Los Angeles 139 10,895 11,034
Riverside 12,314 1,492 13,806
San Diego 6,207 1,868 8,075
San Francisco 2,223 0 2,223
Santa Barbara 11,301 2,632 13,933
Santa Cruz 4,935 3,098 8,033
LBL 0 1,017 1,017
LLL 0 1,725 1,725
Other - UC 106 5,986 6,092
CSL 0 674 674
CSU n/a 7,206 7,206
Other-Non-UC n/a 106,998 106,998
_______ ______ _____
111,942 198,507 310,449
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 2.1
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) 10:49
Average session length (minutes:seconds) 14:54
Longest session recorded (minutes:seconds) 850:38
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 64.9
Retrievals per search - standard deviation 981.4
Percent of searches completed with 0 results 27.0%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 62.3%
Commands entered, by type, excluding errors:
Total Percentage
FIND 42,577 36.4%
DISPLAY (excluding automatic displays) 37,284 31.9%
ACFIND 10 0.0%
BROWSE 470 0.4%
SELECT 307 0.3%
HELP 799 0.7%
EXPLAIN 785 0.7%
SET/RESET 3,367 2.9%
SHOW 313 0.3%
AT 2,495 2.1%
ADD ON (AND, OR, AND NOT) 1,503 1.3%
LOGON or LOGOFF 20,775 17.8%
COMMENT 0 0.0%
SAVE 733 0.6%
USE 770 0.7%
OTHER 4,851 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 5,966 13.4% 1,421 23.8% 11 97.2 545.3
AUTHOR 1,614 3.6% 403 25.0% 13 111.8 322.8
CORPORATE AUTH 414 0.9% 132 31.9% 14 1108.2 8308.5
EXACT CA 14 0.0% 4 28.6% 35 298.1 538.6
TITLE WORD 10,503 23.5% 3,370 32.1% 4 39.7 342.3
EXACT TITLE 7,920 17.8% 1,995 25.2% 2 19.0 133.9
TITLE -> TW 994 2.2% 262 26.4% 9 118.2 1674.7
TITLE -> XT 1,418 3.2% 682 48.1% 1 8.6 70.6
SUBJECT 2,091 4.7% 727 34.8% 37 385.8 1450.2
EXACT SUBJECT 167 0.4% 31 18.6% 49 391.2 1000.6
PERIODICAL 7,229 16.2% 1,579 21.8% 5 90.6 983.0
EXACT PE 2,860 6.4% 533 18.6% 3 81.1 1728.1
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
LANGUAGE 74 0.2% 14 18.9% 47 296.9 853.4
DATE 728 1.6% 151 20.7% 4 214.7 2016.5
FORM 610 1.4% 108 17.7% 13 208.2 1284.5
NUMBER* 73 0.2% 12 16.4% 1 86.5 569.1
MUSIC* 16 0.0% 11 68.8% 2 88.4 169.7
SERIES 996 2.2% 295 29.6% 3 68.9 492.0
UNIFORM TITLE 11 0.0% 2 18.2% 34 769.3 1479.8
Other indexes 907 2.0% 416 45.9% 1 5.9 53.9
* 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 2,489 5.9% 647 26.0% 5 103.4 818.1
Single 39,476 94.1% 10,833 27.4% 4 89.7 1188.2
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 42 9.4% 12 28.6% 8 46.6 123.4
CORPORATE AUTH 1 0.2% 0 0.0% 200 200.0 0.0
EXACT CA 1 0.2% 0 0.0% 10 10.0 0.0
SUBJECT 375 84.1% 93 24.8% 52 165.5 532.6
EXACT SUBJECT 26 5.8% 1 3.8% 18 89.6 170.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.2% 0 0.0% 52 52.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 456 100% 106 23.2% 37 146.1 483.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.0%
BRIEF 66.6%
LONG 8.6%
MARC 3.7%
FIELDS 3.0%
TAG 4.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 4.1%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.9%
Ten most frequent errors:
1. NS command - no next screen 29.0%
2. First word of command is invalid 24.3%
3. FIND command with invalid index name 11.5%
4. Max. # of ports to a Z39 db are in use 8.6%
5. DISPLAY command contains invalid word 3.9%
6. Search term missing from search command 2.1%
7. PS command - no previous screen 2.0%
8. Valid command at an inappropriate time 1.6%
9. KW search in database w/o KW index 1.5%
10. Command contains escape or arrow key 1.3%
11. All others 14.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.8%
2. FIND 10.2%
3. COMMAND WORDS 6.6%
4. Unrecognized term 6.4%
5. PASSWORDS 5.9%
6. INDEXES 5.7%
7. DATABASES 2.8%
8. NRLF 2.2%
9. DISPLAY 1.9%
10. 1329 1.7%
11. All others 29.9%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.1%
2. First word of command is invalid 15.5%
3. FIND command with invalid index name 13.6%
4. DISPLAY command - middle of >1 screen 5.2%
5. FIND command retrieves >1 book 2.8%
6. DISPLAY command-first of >1 screen 2.3%
7. DISPLAY command-complete in one screen 2.1%
8. NS command - no next screen 1.7%
9. DISPLAY command - last of >1 screen 1.7%
10. Help requested from SET DB command 1.6%
11. All others 28.3%
Ten most frequent SHOW requests:
1. HISTORY 44.0%
2. SEARCH 9.1%
3. GLOSSARY 8.5%
4. SYSTEMS INFORMATION 7.5%
5. SETTINGS 4.2%
6. NEWS 2.3%
7. DATABASE NEWS 2.0%
8. MEDLINE NEWS 1.6%
9. MAIL SETTINGS 1.3%
10. 3350 1.3%
11. All others 18.2%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)