MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 01/05/02 through 01/11/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 453 1,846 2,299
Davis 1,563 201 1,764
Irvine 466 0 466
Los Angeles 10 429 439
Riverside 406 80 486
San Diego 368 176 544
San Francisco 184 0 184
Santa Barbara 233 133 366
Santa Cruz 180 169 349
LBL 0 116 116
LLL 0 70 70
Other - UC 47 151 198
CSL 0 152 152
CSU n/a 121 121
Other-Non-UC n/a 3,818 3,818
_______ ______ _____
3,910 7,462 11,372
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 249 838 7,651
2-4 a.m. 189 472 4,167
4-6 a.m. 143 436 3,251
6-8 a.m. 360 1,004 7,911
8-10 a.m. 1,467 4,840 43,956
10-12 a.m. 2,188 7,584 57,183
12-2 p.m. 2,071 7,119 49,685
2-4 p.m. 2,449 7,981 59,413
4-6 p.m. 1,243 4,353 34,528
6-8 p.m. 422 1,608 14,167
8-10 p.m. 274 1,090 6,989
10-12 p.m. 317 1,044 8,133
__________ __________ __________ _________________
Total: 11,372 38,369 297,034
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,166 4,915 6,081
Davis 5,925 1,075 7,000
Irvine 1,697 0 1,697
Los Angeles 40 866 906
Riverside 1,504 219 1,723
San Diego 1,351 302 1,653
San Francisco 446 0 446
Santa Barbara 975 370 1,345
Santa Cruz 1,429 685 2,114
LBL 0 146 146
LLL 0 236 236
Other - UC 32 440 472
CSL 0 178 178
CSU n/a 531 531
Other-Non-UC n/a 13,841 13,841
_______ ______ _____
14,565 23,804 38,369
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 12,228 47,123 59,351
Davis 34,159 6,230 40,389
Irvine 14,646 0 14,646
Los Angeles 334 7,092 7,426
Riverside 11,710 1,397 13,107
San Diego 7,706 2,415 10,121
San Francisco 4,475 0 4,475
Santa Barbara 13,933 2,210 16,143
Santa Cruz 5,700 4,301 10,001
LBL 0 989 989
LLL 0 1,771 1,771
Other - UC 159 3,313 3,472
CSL 0 1,907 1,907
CSU n/a 4,413 4,413
Other-Non-UC n/a 108,823 108,823
_______ ______ _____
105,050 191,984 297,034
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 2.2
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) 11:05
Average session length (minutes:seconds) 15:39
Longest session recorded (minutes:seconds) 947:00
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 61.6
Retrievals per search - standard deviation 1021.7
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 64.1%
Commands entered, by type, excluding errors:
Total Percentage
FIND 36,928 34.7%
DISPLAY (excluding automatic displays) 35,733 33.6%
ACFIND 7 0.0%
BROWSE 239 0.2%
SELECT 113 0.1%
HELP 617 0.6%
EXPLAIN 683 0.6%
SET/RESET 2,226 2.1%
SHOW 212 0.2%
AT 2,460 2.3%
ADD ON (AND, OR, AND NOT) 1,428 1.3%
LOGON or LOGOFF 19,645 18.5%
COMMENT 1 0.0%
SAVE 706 0.7%
USE 832 0.8%
OTHER 4,515 4.2%
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 5,892 15.2% 1,419 24.1% 10 77.0 387.8
AUTHOR 1,309 3.4% 295 22.5% 11 132.7 596.1
CORPORATE AUTH 425 1.1% 152 35.8% 25 450.0 2416.7
EXACT CA 10 0.0% 5 50.0% 4 8.2 9.7
TITLE WORD 8,896 23.0% 2,828 31.8% 4 47.3 571.2
EXACT TITLE 5,792 15.0% 1,779 30.7% 2 26.3 145.0
TITLE -> TW 901 2.3% 225 25.0% 6 61.5 230.7
TITLE -> XT 1,017 2.6% 429 42.2% 1 4.6 25.3
SUBJECT 1,322 3.4% 424 32.1% 46 389.1 1935.5
EXACT SUBJECT 80 0.2% 16 20.0% 52 642.6 2764.7
PERIODICAL 7,529 19.5% 1,562 20.7% 5 102.2 1927.4
EXACT PE 2,555 6.6% 370 14.5% 2 25.5 387.5
RPE 4 0.0% 0 0.0% 5 4.0 2.4
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 81 0.2% 11 13.6% 32 202.6 783.4
DATE 439 1.1% 99 22.6% 4 36.3 145.5
FORM 407 1.1% 91 22.4% 9 215.0 1027.3
NUMBER* 34 0.1% 16 47.1% 1 123.2 445.1
MUSIC* 7 0.0% 6 85.7% 3 3.0 0.0
SERIES 1,004 2.6% 360 35.9% 3 206.0 3458.3
UNIFORM TITLE 15 0.0% 3 20.0% 200 1214.6 1653.2
Other indexes 919 2.4% 353 38.4% 1 67.2 726.6
* 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 2,026 5.6% 543 26.8% 3 58.6 401.5
Single 34,448 94.4% 9,319 27.1% 4 87.2 1248.1
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 9 4.1% 5 55.6% 107 117.3 132.8
CORPORATE AUTH 3 1.4% 1 33.3% 32 31.5 41.7
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 195 87.8% 37 19.0% 46 548.3 2934.6
EXACT SUBJECT 14 6.3% 0 0.0% 39 59.1 53.3
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.5% 0 0.0% 139 139.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 231 100% 43 18.6% 39 469.2 2695.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.7%
BRIEF 65.2%
LONG 11.0%
MARC 4.7%
FIELDS 2.6%
TAG 2.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.5%
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 35.2%
2. First word of command is invalid 22.7%
3. FIND command with invalid index name 9.8%
4. DISPLAY command contains invalid word 3.8%
5. KW search in database w/o KW index 2.2%
6. 1281 2.2%
7. Search term missing from search command 2.0%
8. PS command - no previous screen 2.0%
9. DISPLAY command - no FIND results 1.8%
10. Index invalid in current database 1.3%
11. All others 17.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.8%
2. FIND 10.2%
3. Unrecognized term 7.3%
4. 3190 5.4%
5. INDEXES 4.8%
6. COMMAND WORDS 4.4%
7. DATABASES 3.4%
8. DISPLAY 3.2%
9. PASSWORDS 2.8%
10. CATALOG 2.2%
11. All others 35.4%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.6%
2. First word of command is invalid 11.7%
3. FIND command with invalid index name 10.0%
4. SHOW command with invalid modifier 4.2%
5. 1281 3.8%
6. F/BR with index invalid in current DB 2.9%
7. DISPLAY command - middle of >1 screen 2.4%
8. TW search with zero results 2.3%
9. NS command - no next screen 2.2%
10. KW search in database w/o KW index 2.1%
11. All others 34.9%
Ten most frequent SHOW requests:
1. HISTORY 48.1%
2. DATABASE NEWS 5.3%
3. SETTINGS 4.9%
4. GLOSSARY 3.9%
5. SEARCH 3.9%
6. 5101 3.4%
7. TIME 2.9%
8. SYSTEM NEWS 1.9%
9. TERMINAL 1.5%
10. NEWS 1.5%
11. All others 22.8%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)