MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 03/30/02 through 04/05/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 381 1,785 2,166
Davis 1,077 126 1,203
Irvine 348 0 348
Los Angeles 4 271 275
Riverside 367 59 426
San Diego 272 110 382
San Francisco 131 0 131
Santa Barbara 131 69 200
Santa Cruz 179 142 321
LBL 0 57 57
LLL 0 30 30
Other - UC 11 212 223
CSL 0 97 97
CSU n/a 92 92
Other-Non-UC n/a 2,971 2,971
_______ ______ _____
2,901 6,021 8,922
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 208 576 4,671
2-4 a.m. 137 450 2,194
4-6 a.m. 150 303 1,547
6-8 a.m. 345 1,290 8,662
8-10 a.m. 1,269 4,875 33,442
10-12 a.m. 1,642 6,665 44,176
12-2 p.m. 1,417 6,305 54,317
2-4 p.m. 1,627 7,013 48,062
4-6 p.m. 1,119 4,903 32,075
6-8 p.m. 411 1,302 10,040
8-10 p.m. 291 1,081 8,249
10-12 p.m. 306 1,077 9,264
__________ __________ __________ _________________
Total: 8,922 35,840 256,699
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 971 5,784 6,755
Davis 5,104 1,496 6,600
Irvine 1,622 0 1,622
Los Angeles 11 725 736
Riverside 2,495 226 2,721
San Diego 1,079 255 1,334
San Francisco 247 0 247
Santa Barbara 551 150 701
Santa Cruz 1,310 561 1,871
LBL 0 61 61
LLL 0 70 70
Other - UC 19 427 446
CSL 0 151 151
CSU n/a 461 461
Other-Non-UC n/a 12,064 12,064
_______ ______ _____
13,409 22,431 35,840
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,863 43,666 52,529
Davis 33,754 7,082 40,836
Irvine 12,948 0 12,948
Los Angeles 392 5,029 5,421
Riverside 11,912 1,887 13,799
San Diego 3,757 3,820 7,577
San Francisco 1,797 0 1,797
Santa Barbara 6,456 1,353 7,809
Santa Cruz 6,893 2,709 9,602
LBL 0 378 378
LLL 0 654 654
Other - UC 128 6,952 7,080
CSL 0 843 843
CSU n/a 6,118 6,118
Other-Non-UC n/a 89,308 89,308
_______ ______ _____
86,900 169,799 256,699
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 3.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:20
Average session length (minutes:seconds) 16:32
Longest session recorded (minutes:seconds) 822:31
Average number of searches completed per session 4.0
Retrievals per search - median 2.0
Retrievals per search - average 76.8
Retrievals per search - standard deviation 1829.4
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 67.3%
Commands entered, by type, excluding errors:
Total Percentage
FIND 34,485 36.6%
DISPLAY (excluding automatic displays) 32,644 34.7%
ACFIND 3 0.0%
BROWSE 235 0.2%
SELECT 144 0.2%
HELP 502 0.5%
EXPLAIN 498 0.5%
SET/RESET 1,896 2.0%
SHOW 145 0.2%
AT 2,373 2.5%
ADD ON (AND, OR, AND NOT) 1,339 1.4%
LOGON or LOGOFF 15,453 16.4%
COMMENT 0 0.0%
SAVE 430 0.5%
USE 514 0.5%
OTHER 3,492 3.7%
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 5,295 14.7% 1,242 23.5% 11 90.4 641.2
AUTHOR 1,111 3.1% 287 25.8% 13 84.2 350.8
CORPORATE AUTH 319 0.9% 118 37.0% 10 562.2 2247.2
EXACT CA 8 0.0% 2 25.0% 3 4.7 5.6
TITLE WORD 7,009 19.5% 2,251 32.1% 4 41.7 330.5
EXACT TITLE 7,245 20.2% 2,030 28.0% 2 13.3 109.3
TITLE -> TW 840 2.3% 198 23.6% 9 68.5 550.5
TITLE -> XT 988 2.8% 411 41.6% 2 17.0 179.2
SUBJECT 1,506 4.2% 486 32.3% 50 647.0 2646.0
EXACT SUBJECT 78 0.2% 16 20.5% 151 490.1 1118.8
PERIODICAL 6,589 18.3% 1,413 21.4% 4 81.5 1461.5
EXACT PE 2,513 7.0% 410 16.3% 3 26.8 427.6
RPE 1 0.0% 0 0.0% 2 2.0 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 43 0.1% 3 7.0% 73 8916.8 41398.6
DATE 390 1.1% 87 22.3% 3 22.2 50.7
FORM 349 1.0% 56 16.0% 17 876.3 8957.1
NUMBER* 34 0.1% 18 52.9% 4 289.9 621.9
MUSIC* 25 0.1% 16 64.0% 22 136.4 183.7
SERIES 731 2.0% 215 29.4% 8 58.8 177.6
UNIFORM TITLE 15 0.0% 4 26.7% 20 179.3 341.0
Other indexes 816 2.3% 429 52.6% 1 11.9 132.0
* 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 1,700 5.0% 439 25.8% 3 106.6 697.2
Single 32,418 95.0% 8,796 27.1% 4 102.9 2206.6
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 7 3.1% 1 14.3% 38 43.0 39.8
CORPORATE AUTH 5 2.2% 3 60.0% 464 464.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 188 84.3% 39 20.7% 38 223.5 1211.5
EXACT SUBJECT 20 9.0% 2 10.0% 26 113.6 205.1
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 3 1.3% 1 33.3% 27 26.5 33.2
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 225 100% 46 20.4% 35 204.7 1108.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.9%
BRIEF 60.7%
LONG 9.7%
MARC 4.2%
FIELDS 7.9%
TAG 2.8%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.8%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.8%
Ten most frequent errors:
1. NS command - no next screen 35.0%
2. First word of command is invalid 25.2%
3. FIND command with invalid index name 11.7%
4. DISPLAY command contains invalid word 4.9%
5. Search term missing from search command 2.3%
6. DISPLAY command - no FIND results 2.2%
7. PS command - no previous screen 1.9%
8. Valid command at an inappropriate time 1.6%
9. KW search in database w/o KW index 1.2%
10. AT command with invalid library name 1.0%
11. All others 12.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.1%
2. FIND 12.7%
3. PASSWORDS 5.8%
4. COMMAND WORDS 5.4%
5. Unrecognized term 5.0%
6. INDEXES 3.2%
7. DISPLAY 2.8%
8. LOCATE (PE DB) 2.2%
9. CATALOG 1.8%
10. 1773 1.8%
11. All others 31.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.3%
2. First word of command is invalid 14.9%
3. FIND command with invalid index name 11.0%
4. DISPLAY command - middle of >1 screen 3.7%
5. DISPLAY command-first of >1 screen 3.3%
6. NS command - no next screen 2.9%
7. DISPLAY command-complete in one screen 2.9%
8. DISPLAY command - last of >1 screen 2.7%
9. FIND command retrieves >1 book 2.4%
10. F/BR command with invalid search term 2.0%
11. All others 29.9%
Ten most frequent SHOW requests:
1. HISTORY 58.4%
2. SEARCH 10.9%
3. GLOSSARY 7.3%
4. SETTINGS 3.6%
5. PSYCINFO NEWS 2.9%
6. 0168 1.5%
7. SYSTEM NEWS 1.5%
8. DATABASE NEWS 1.5%
9. NEWS 1.5%
10. 0838 1.5%
11. All others 9.5%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)