MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 02/02/02 through 02/08/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 612 2,082 2,694
Davis 1,382 180 1,562
Irvine 325 0 325
Los Angeles 17 346 363
Riverside 391 77 468
San Diego 255 143 398
San Francisco 139 0 139
Santa Barbara 299 76 375
Santa Cruz 170 136 306
LBL 0 90 90
LLL 0 64 64
Other - UC 31 172 203
CSL 0 166 166
CSU n/a 133 133
Other-Non-UC n/a 3,378 3,378
_______ ______ _____
3,621 7,043 10,664
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 269 669 6,697
2-4 a.m. 199 620 6,403
4-6 a.m. 161 529 4,032
6-8 a.m. 384 1,053 10,328
8-10 a.m. 1,533 6,256 44,892
10-12 a.m. 2,010 7,791 55,254
12-2 p.m. 1,730 6,400 49,708
2-4 p.m. 2,064 8,126 60,499
4-6 p.m. 1,287 5,327 36,649
6-8 p.m. 482 1,859 15,396
8-10 p.m. 249 992 9,451
10-12 p.m. 296 1,008 8,404
__________ __________ __________ _________________
Total: 10,664 40,630 307,713
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,917 6,449 8,366
Davis 6,439 933 7,372
Irvine 1,569 0 1,569
Los Angeles 301 827 1,128
Riverside 1,726 244 1,970
San Diego 816 316 1,132
San Francisco 320 0 320
Santa Barbara 1,345 176 1,521
Santa Cruz 1,733 255 1,988
LBL 0 86 86
LLL 0 145 145
Other - UC 49 585 634
CSL 0 151 151
CSU n/a 569 569
Other-Non-UC n/a 13,679 13,679
_______ ______ _____
16,215 24,415 40,630
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 17,325 50,478 67,803
Davis 38,516 6,062 44,578
Irvine 11,639 0 11,639
Los Angeles 611 7,769 8,380
Riverside 14,100 2,780 16,880
San Diego 4,207 3,759 7,966
San Francisco 2,933 0 2,933
Santa Barbara 12,828 1,747 14,575
Santa Cruz 4,955 3,210 8,165
LBL 0 796 796
LLL 0 1,662 1,662
Other - UC 903 6,204 7,107
CSL 0 1,173 1,173
CSU n/a 5,466 5,466
Other-Non-UC n/a 108,590 108,590
_______ ______ _____
108,017 199,696 307,713
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 3.2
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) 11:16
Average session length (minutes:seconds) 15:43
Longest session recorded (minutes:seconds) 1134
Average number of searches completed per session 3.8
Retrievals per search - median 2.0
Retrievals per search - average 67.6
Retrievals per search - standard deviation 1246.4
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 3.5%
Percent of long searches completed
(includes partial results) 67.0%
Commands entered, by type, excluding errors:
Total Percentage
FIND 39,147 35.9%
DISPLAY (excluding automatic displays) 36,854 33.8%
ACFIND 9 0.0%
BROWSE 231 0.2%
SELECT 121 0.1%
HELP 667 0.6%
EXPLAIN 574 0.5%
SET/RESET 2,006 1.8%
SHOW 257 0.2%
AT 2,987 2.7%
ADD ON (AND, OR, AND NOT) 1,472 1.4%
LOGON or LOGOFF 18,532 17.0%
COMMENT 2 0.0%
SAVE 1,056 1.0%
USE 739 0.7%
OTHER 4,323 4.0%
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 5,559 13.6% 1,289 23.2% 10 81.5 322.9
AUTHOR 1,824 4.5% 462 25.3% 13 99.4 487.6
CORPORATE AUTH 603 1.5% 201 33.3% 17 324.5 1600.3
EXACT CA 7 0.0% 1 14.3% 32 88.5 115.3
TITLE WORD 9,764 23.9% 3,151 32.3% 4 41.5 460.2
EXACT TITLE 5,326 13.0% 1,560 29.3% 2 21.7 163.5
TITLE -> TW 1,091 2.7% 270 24.7% 9 63.1 338.3
TITLE -> XT 1,221 3.0% 487 39.9% 1 12.2 80.0
SUBJECT 1,657 4.1% 518 31.3% 39 747.3 6391.8
EXACT SUBJECT 168 0.4% 33 19.6% 46 246.6 530.0
PERIODICAL 7,567 18.5% 1,646 21.8% 4 102.5 1353.4
EXACT PE 2,846 7.0% 408 14.3% 3 21.4 165.2
RPE 3 0.0% 0 0.0% 13 19.3 19.3
XRP 2 0.0% 0 0.0% 5 4.5 0.7
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 75 0.2% 11 14.7% 52 398.0 779.6
DATE 435 1.1% 89 20.5% 4 234.9 2326.1
FORM 451 1.1% 107 23.7% 11 146.0 390.4
NUMBER* 24 0.1% 12 50.0% 4 2011.8 6332.4
MUSIC* 18 0.0% 14 77.8% 3 2.5 1.0
SERIES 1,138 2.8% 366 32.2% 4 50.8 167.8
UNIFORM TITLE 4 0.0% 1 25.0% 1 1.0 0.0
Other indexes 1,120 2.7% 406 36.2% 1 9.8 120.1
* 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 2,086 5.4% 568 27.2% 4 101.5 1062.2
Single 36,615 94.6% 9,874 27.0% 4 93.1 1503.8
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 68 30.2% 15 22.1% 6 46.0 113.0
CORPORATE AUTH 1 0.4% 0 0.0% 3 3.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 123 54.7% 29 23.6% 111 224.5 465.6
EXACT SUBJECT 31 13.8% 3 9.7% 43 100.5 138.7
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 2 0.9% 0 0.0% 3 3.0 2.8
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 226 100% 47 20.8% 30 147.3 356.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.5%
BRIEF 64.4%
LONG 9.9%
MARC 4.5%
FIELDS 3.1%
TAG 3.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.3%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.7%
Ten most frequent errors:
1. NS command - no next screen 32.7%
2. First word of command is invalid 27.3%
3. FIND command with invalid index name 11.3%
4. DISPLAY command contains invalid word 4.6%
5. Search term missing from search command 2.5%
6. PS command - no previous screen 1.9%
7. DISPLAY command - no FIND results 1.9%
8. KW search in database w/o KW index 1.6%
9. Valid command at an inappropriate time 1.4%
10. Command contains escape or arrow key 1.2%
11. All others 13.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.6%
2. FIND 11.8%
3. COMMAND WORDS 7.5%
4. PASSWORDS 6.3%
5. INDEXES 5.7%
6. Unrecognized term 5.2%
7. DATABASES 3.5%
8. CATALOG 2.6%
9. LOCATE (PE DB) 1.9%
10. DISPLAY 1.7%
11. All others 29.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.2%
2. First word of command is invalid 14.5%
3. FIND command with invalid index name 11.6%
4. DISPLAY command - middle of >1 screen 4.0%
5. NS command - no next screen 3.7%
6. DISPLAY command-complete in one screen 3.4%
7. DISPLAY command-first of >1 screen 3.2%
8. TW search with zero results 2.1%
9. FIND command retrieves >1 book 2.0%
10. F/BR with index invalid in current DB 1.5%
11. All others 28.7%
Ten most frequent SHOW requests:
1. HISTORY 51.8%
2. MAIL STATUS 13.5%
3. GLOSSARY 8.4%
4. SEARCH 6.8%
5. TIME 5.6%
6. DATABASE NEWS 2.8%
7. SETTINGS 1.6%
8. TERMINAL 1.2%
9. NEWS 1.2%
10. MAIL SETTINGS 1.2%
11. All others 6.0%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)