MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 02/23/02 through 03/01/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 694 2,163 2,857
Davis 1,487 168 1,655
Irvine 384 0 384
Los Angeles 5 418 423
Riverside 411 88 499
San Diego 342 112 454
San Francisco 159 0 159
Santa Barbara 328 106 434
Santa Cruz 194 187 381
LBL 0 74 74
LLL 0 43 43
Other - UC 38 262 300
CSL 0 184 184
CSU n/a 156 156
Other-Non-UC n/a 3,669 3,669
_______ ______ _____
4,042 7,630 11,672
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 295 1,072 10,463
2-4 a.m. 209 742 5,805
4-6 a.m. 181 736 6,254
6-8 a.m. 398 1,164 8,919
8-10 a.m. 1,554 5,462 39,512
10-12 a.m. 2,157 7,791 56,332
12-2 p.m. 1,980 7,297 53,396
2-4 p.m. 2,332 8,328 64,566
4-6 p.m. 1,425 5,636 42,892
6-8 p.m. 500 2,004 16,930
8-10 p.m. 350 1,157 11,478
10-12 p.m. 291 1,096 12,128
__________ __________ __________ _________________
Total: 11,672 42,485 328,675
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,912 7,087 8,999
Davis 5,392 1,053 6,445
Irvine 1,809 0 1,809
Los Angeles 22 1,049 1,071
Riverside 2,108 247 2,355
San Diego 1,013 228 1,241
San Francisco 394 0 394
Santa Barbara 1,213 206 1,419
Santa Cruz 973 481 1,454
LBL 0 105 105
LLL 0 129 129
Other - UC 75 707 782
CSL 0 194 194
CSU n/a 636 636
Other-Non-UC n/a 15,452 15,452
_______ ______ _____
14,911 27,574 42,485
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,643 64,658 80,301
Davis 35,826 4,227 40,053
Irvine 11,385 0 11,385
Los Angeles 286 8,876 9,162
Riverside 13,387 2,023 15,410
San Diego 4,826 1,798 6,624
San Francisco 4,525 0 4,525
Santa Barbara 10,601 2,235 12,836
Santa Cruz 4,825 4,864 9,689
LBL 0 1,386 1,386
LLL 0 762 762
Other - UC 587 5,506 6,093
CSL 0 1,436 1,436
CSU n/a 6,478 6,478
Other-Non-UC n/a 122,535 122,535
_______ ______ _____
101,891 226,784 328,675
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 3.4
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) 11:17
Average session length (minutes:seconds) 15:20
Longest session recorded (minutes:seconds) 523:03
Average number of searches completed per session 3.6
Retrievals per search - median 2.0
Retrievals per search - average 62.1
Retrievals per search - standard deviation 839.4
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 63.8%
Commands entered, by type, excluding errors:
Total Percentage
FIND 41,037 35.6%
DISPLAY (excluding automatic displays) 39,278 34.1%
ACFIND 22 0.0%
BROWSE 386 0.3%
SELECT 234 0.2%
HELP 740 0.6%
EXPLAIN 781 0.7%
SET/RESET 2,226 1.9%
SHOW 184 0.2%
AT 2,594 2.3%
ADD ON (AND, OR, AND NOT) 1,411 1.2%
LOGON or LOGOFF 20,496 17.8%
COMMENT 2 0.0%
SAVE 637 0.6%
USE 772 0.7%
OTHER 4,485 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 5,858 13.7% 1,370 23.4% 11 85.0 406.7
AUTHOR 1,564 3.6% 394 25.2% 10 121.3 469.6
CORPORATE AUTH 480 1.1% 173 36.0% 15 315.4 1466.3
EXACT CA 7 0.0% 1 14.3% 20 32.7 42.9
TITLE WORD 10,113 23.6% 3,235 32.0% 4 43.1 616.8
EXACT TITLE 5,986 14.0% 1,818 30.4% 2 18.0 102.1
TITLE -> TW 944 2.2% 249 26.4% 8 60.0 212.7
TITLE -> XT 1,173 2.7% 530 45.2% 1 5.7 20.5
SUBJECT 1,932 4.5% 692 35.8% 45 619.0 3734.1
EXACT SUBJECT 145 0.3% 26 17.9% 42 305.7 1065.2
PERIODICAL 8,403 19.6% 1,689 20.1% 5 85.9 981.1
EXACT PE 3,156 7.4% 447 14.2% 3 19.0 256.7
RPE 5 0.0% 1 20.0% 2 5.0 6.7
XRP 2 0.0% 0 0.0% 18 17.5 12.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 100 0.2% 20 20.0% 29 256.5 490.3
DATE 535 1.2% 130 24.3% 4 85.6 494.1
FORM 536 1.3% 106 19.8% 13 115.9 348.6
NUMBER* 26 0.1% 13 50.0% 3 1297.4 4302.1
MUSIC* 4 0.0% 2 50.0% 153 152.5 202.9
SERIES 1,019 2.4% 300 29.4% 3 76.4 492.0
UNIFORM TITLE 9 0.0% 3 33.3% 39 65.3 79.5
Other indexes 879 2.1% 342 38.9% 1 57.8 638.9
* 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 2,152 5.3% 594 27.6% 4 54.8 303.6
Single 38,345 94.7% 10,306 26.9% 4 88.1 1022.4
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 40 11.4% 6 15.0% 10 32.7 65.9
CORPORATE AUTH 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CA 1 0.3% 0 0.0% 2 2.0 0.0
SUBJECT 252 72.0% 58 23.0% 34 115.1 164.0
EXACT SUBJECT 56 16.0% 7 12.5% 34 247.2 541.7
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.3% 0 0.0% 43 43.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 367 100% 72 19.6% 25 123.9 264.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.1%
BRIEF 66.1%
LONG 10.6%
MARC 3.9%
FIELDS 3.6%
TAG 2.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.4%
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 33.6%
2. First word of command is invalid 25.1%
3. FIND command with invalid index name 12.8%
4. DISPLAY command contains invalid word 4.6%
5. Search term missing from search command 2.7%
6. PS command - no previous screen 2.0%
7. Valid command at an inappropriate time 1.7%
8. DISPLAY command - no FIND results 1.5%
9. Command contains escape or arrow key 1.3%
10. KW search in database w/o KW index 1.2%
11. All others 13.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.3%
2. FIND 11.4%
3. INDEXES 7.2%
4. COMMAND WORDS 4.9%
5. Unrecognized term 4.4%
6. PASSWORDS 4.2%
7. DATES 3.3%
8. DISPLAY 3.3%
9. ADD-ON SEARCH 2.7%
10. NRLF 1.7%
11. All others 29.7%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.4%
2. First word of command is invalid 13.1%
3. FIND command with invalid index name 12.0%
4. DISPLAY command - middle of >1 screen 4.3%
5. DISPLAY command-first of >1 screen 3.9%
6. NS command - no next screen 3.3%
7. DISPLAY command-complete in one screen 2.6%
8. FIND command retrieves >1 book 2.4%
9. DISPLAY command - last of >1 screen 2.2%
10. Help requested from SET DB command 1.7%
11. All others 30.2%
Ten most frequent SHOW requests:
1. HISTORY 66.3%
2. SEARCH 9.0%
3. GLOSSARY 8.4%
4. SETTINGS 8.4%
5. DATABASE NEWS 2.4%
6. IAC NEWS 1.2%
7. LOCATION 0.6%
8. UCSF PASSWORDS 0.6%
9. 0408 0.6%
10. SYSTEM NEWS 0.6%
11. All others 1.8%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)