MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 03/02/02 through 03/08/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 712 2,132 2,844
Davis 1,635 177 1,812
Irvine 400 0 400
Los Angeles 18 376 394
Riverside 412 82 494
San Diego 321 129 450
San Francisco 148 0 148
Santa Barbara 284 118 402
Santa Cruz 181 209 390
LBL 0 65 65
LLL 0 38 38
Other - UC 30 184 214
CSL 0 126 126
CSU n/a 169 169
Other-Non-UC n/a 3,581 3,581
_______ ______ _____
4,141 7,386 11,527
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 190 739 6,351
2-4 a.m. 193 683 9,635
4-6 a.m. 170 708 6,192
6-8 a.m. 382 1,225 9,381
8-10 a.m. 1,562 5,635 40,026
10-12 a.m. 2,228 8,485 60,782
12-2 p.m. 2,148 8,245 59,056
2-4 p.m. 2,185 8,066 61,222
4-6 p.m. 1,292 5,315 42,129
6-8 p.m. 546 1,968 16,590
8-10 p.m. 327 1,121 8,850
10-12 p.m. 304 994 8,090
__________ __________ __________ _________________
Total: 11,527 43,184 328,304
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,310 6,840 9,150
Davis 6,245 988 7,233
Irvine 1,677 0 1,677
Los Angeles 150 880 1,030
Riverside 2,459 306 2,765
San Diego 1,032 311 1,343
San Francisco 478 0 478
Santa Barbara 1,150 192 1,342
Santa Cruz 1,049 531 1,580
LBL 0 67 67
LLL 0 97 97
Other - UC 50 556 606
CSL 0 375 375
CSU n/a 663 663
Other-Non-UC n/a 14,778 14,778
_______ ______ _____
16,600 26,584 43,184
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 17,951 51,536 69,487
Davis 49,885 4,162 54,047
Irvine 10,969 0 10,969
Los Angeles 2,477 6,174 8,651
Riverside 13,404 2,808 16,212
San Diego 4,072 4,113 8,185
San Francisco 3,801 0 3,801
Santa Barbara 11,649 1,524 13,173
Santa Cruz 3,880 5,503 9,383
LBL 0 1,142 1,142
LLL 0 1,104 1,104
Other - UC 357 6,387 6,744
CSL 0 3,314 3,314
CSU n/a 10,378 10,378
Other-Non-UC n/a 111,714 111,714
_______ ______ _____
118,445 209,859 328,304
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 2.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 1.2
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:15
Average session length (minutes:seconds) 15:18
Longest session recorded (minutes:seconds) 521:22
Average number of searches completed per session 3.7
Retrievals per search - median 2.0
Retrievals per search - average 73.3
Retrievals per search - standard deviation 1361.1
Percent of searches completed with 0 results 27.6%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 66.8%
Commands entered, by type, excluding errors:
Total Percentage
FIND 41,494 36.1%
DISPLAY (excluding automatic displays) 38,303 33.3%
ACFIND 9 0.0%
BROWSE 265 0.2%
SELECT 158 0.1%
HELP 685 0.6%
EXPLAIN 674 0.6%
SET/RESET 2,289 2.0%
SHOW 194 0.2%
AT 2,771 2.4%
ADD ON (AND, OR, AND NOT) 1,664 1.4%
LOGON or LOGOFF 20,156 17.5%
COMMENT 2 0.0%
SAVE 1,003 0.9%
USE 715 0.6%
OTHER 4,533 3.9%
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 6,313 14.4% 1,491 23.6% 10 86.3 523.1
AUTHOR 1,534 3.5% 411 26.8% 11 113.9 431.3
CORPORATE AUTH 438 1.0% 151 34.5% 25 658.7 2028.4
EXACT CA 7 0.0% 2 28.6% 12 25.6 27.3
TITLE WORD 9,614 22.0% 3,133 32.6% 4 41.8 319.3
EXACT TITLE 6,653 15.2% 2,125 31.9% 2 19.3 147.1
TITLE -> TW 1,110 2.5% 279 25.1% 10 238.4 4233.7
TITLE -> XT 1,122 2.6% 505 45.0% 2 8.5 54.4
SUBJECT 2,433 5.6% 841 34.6% 51 577.9 5598.6
EXACT SUBJECT 133 0.3% 41 30.8% 55 308.9 824.3
PERIODICAL 7,713 17.6% 1,511 19.6% 5 102.4 1175.4
EXACT PE 2,960 6.8% 427 14.4% 3 21.5 132.8
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 277 0.6% 27 9.7% 7 190.5 657.9
DATE 519 1.2% 122 23.5% 4 126.3 659.8
FORM 730 1.7% 165 22.6% 8 486.8 7259.6
NUMBER* 57 0.1% 19 33.3% 2 27.1 74.8
MUSIC* 5 0.0% 4 80.0% 17 17.0 0.0
SERIES 1,095 2.5% 418 38.2% 3 51.7 191.6
UNIFORM TITLE 9 0.0% 5 55.6% 2 2.8 2.4
Other indexes 1,064 2.4% 452 42.5% 1 48.6 549.5
* 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 2,434 5.9% 655 26.9% 3 210.4 4183.1
Single 38,574 94.1% 10,762 27.9% 4 92.6 1277.1
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 34 14.7% 9 26.5% 5 34.0 57.1
CORPORATE AUTH 3 1.3% 0 0.0% 2 2.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 182 78.4% 33 18.1% 42 825.1 8127.5
EXACT SUBJECT 13 5.6% 1 7.7% 56 58.7 50.6
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 256 100% 46 18.0% 30 594.7 6848.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.7%
BRIEF 64.8%
LONG 9.9%
MARC 5.1%
FIELDS 4.5%
TAG 1.9%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.0%
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 33.4%
2. First word of command is invalid 25.2%
3. FIND command with invalid index name 13.5%
4. DISPLAY command contains invalid word 4.9%
5. Search term missing from search command 2.8%
6. PS command - no previous screen 1.8%
7. Valid command at an inappropriate time 1.6%
8. DISPLAY command - no FIND results 1.6%
9. KW search in database w/o KW index 1.6%
10. Command contains escape or arrow key 1.2%
11. All others 12.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.7%
2. FIND 13.8%
3. COMMAND WORDS 6.7%
4. Unrecognized term 6.2%
5. INDEXES 5.5%
6. LOCATE (PE DB) 3.1%
7. PASSWORDS 2.7%
8. DISPLAY 2.2%
9. MAIL 1.9%
10. ADD-ON SEARCH 1.8%
11. All others 29.4%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 21.9%
2. First word of command is invalid 14.6%
3. FIND command with invalid index name 14.3%
4. TW search with zero results 3.5%
5. DISPLAY command - middle of >1 screen 3.1%
6. FIND command retrieves >1 book 2.9%
7. DISPLAY command-first of >1 screen 2.7%
8. DISPLAY command-complete in one screen 2.1%
9. DISPLAY command - last of >1 screen 2.1%
10. F/BR with index invalid in current DB 1.9%
11. All others 30.8%
Ten most frequent SHOW requests:
1. HISTORY 59.1%
2. GLOSSARY 8.0%
3. SETTINGS 6.8%
4. SEARCH 5.7%
5. PSYCINFO NEWS 4.0%
6. MAIL STATUS 2.8%
7. DATABASE NEWS 1.7%
8. TIME 1.7%
9. PSYCINFO STATISTICS 1.1%
10. SYSTEM NEWS 1.1%
11. All others 8.0%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)