MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 02/09/02 through 02/15/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 746 2,198 2,944
Davis 1,592 171 1,763
Irvine 363 0 363
Los Angeles 14 400 414
Riverside 384 70 454
San Diego 335 136 471
San Francisco 156 0 156
Santa Barbara 284 78 362
Santa Cruz 156 163 319
LBL 0 71 71
LLL 0 49 49
Other - UC 22 186 208
CSL 0 141 141
CSU n/a 139 139
Other-Non-UC n/a 3,802 3,802
_______ ______ _____
4,052 7,604 11,656
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 235 949 10,564
2-4 a.m. 212 807 10,406
4-6 a.m. 181 822 6,355
6-8 a.m. 409 1,216 9,756
8-10 a.m. 1,472 5,265 35,301
10-12 a.m. 2,222 8,541 60,535
12-2 p.m. 2,030 7,678 56,290
2-4 p.m. 2,302 8,355 62,955
4-6 p.m. 1,482 5,575 39,881
6-8 p.m. 490 1,757 14,939
8-10 p.m. 282 1,134 9,429
10-12 p.m. 339 1,279 10,593
__________ __________ __________ _________________
Total: 11,656 43,378 327,004
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,964 7,250 9,214
Davis 6,254 848 7,102
Irvine 1,728 0 1,728
Los Angeles 45 831 876
Riverside 1,585 193 1,778
San Diego 1,328 284 1,612
San Francisco 414 0 414
Santa Barbara 1,174 196 1,370
Santa Cruz 1,095 330 1,425
LBL 0 110 110
LLL 0 136 136
Other - UC 43 638 681
CSL 0 254 254
CSU n/a 547 547
Other-Non-UC n/a 16,131 16,131
_______ ______ _____
15,630 27,748 43,378
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 18,776 51,507 70,283
Davis 39,850 5,431 45,281
Irvine 11,970 0 11,970
Los Angeles 352 8,698 9,050
Riverside 9,093 1,196 10,289
San Diego 6,403 1,894 8,297
San Francisco 4,325 0 4,325
Santa Barbara 9,278 1,308 10,586
Santa Cruz 4,692 2,384 7,076
LBL 0 925 925
LLL 0 959 959
Other - UC 1,010 5,392 6,402
CSL 0 2,093 2,093
CSU n/a 6,538 6,538
Other-Non-UC n/a 132,930 132,930
_______ ______ _____
105,749 221,255 327,004
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 3.7
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) 11:13
Average session length (minutes:seconds) 15:48
Longest session recorded (minutes:seconds) 643:35
Average number of searches completed per session 3.7
Retrievals per search - median 2.0
Retrievals per search - average 92.5
Retrievals per search - standard deviation 2980.8
Percent of searches completed with 0 results 27.0%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 65.7%
Commands entered, by type, excluding errors:
Total Percentage
FIND 41,918 35.9%
DISPLAY (excluding automatic displays) 39,854 34.2%
ACFIND 14 0.0%
BROWSE 477 0.4%
SELECT 290 0.2%
HELP 735 0.6%
EXPLAIN 832 0.7%
SET/RESET 2,309 2.0%
SHOW 263 0.2%
AT 2,605 2.2%
ADD ON (AND, OR, AND NOT) 1,429 1.2%
LOGON or LOGOFF 20,197 17.3%
COMMENT 1 0.0%
SAVE 533 0.5%
USE 805 0.7%
OTHER 4,384 3.8%
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 5,896 13.4% 1,349 22.9% 10 86.2 313.9
AUTHOR 1,565 3.6% 409 26.1% 11 99.6 358.8
CORPORATE AUTH 548 1.2% 212 38.7% 16 560.3 3134.7
EXACT CA 10 0.0% 3 30.0% 28 359.4 564.8
TITLE WORD 10,572 24.1% 3,324 31.4% 4 63.7 2174.1
EXACT TITLE 6,928 15.8% 2,014 29.1% 2 17.4 116.7
TITLE -> TW 826 1.9% 197 23.8% 7 118.2 991.6
TITLE -> XT 1,110 2.5% 521 46.9% 1 14.1 106.3
SUBJECT 1,905 4.3% 688 36.1% 47 934.5 13667.9
EXACT SUBJECT 166 0.4% 42 25.3% 75 1432.7 4681.5
PERIODICAL 8,076 18.4% 1,692 20.9% 5 77.8 1170.8
EXACT PE 2,958 6.7% 432 14.6% 2 24.4 370.8
RPE 2 0.0% 0 0.0% 8 8.0 7.1
XRP 3 0.0% 0 0.0% 5 4.0 1.7
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 48 0.1% 6 12.5% 72 11375.5 46888.3
DATE 596 1.4% 143 24.0% 5 57.5 212.5
FORM 451 1.0% 71 15.7% 16 420.1 3146.7
NUMBER* 24 0.1% 12 50.0% 2 70.3 169.5
MUSIC* 10 0.0% 5 50.0% 23 304.8 636.7
SERIES 1,220 2.8% 425 34.8% 4 142.5 1488.3
UNIFORM TITLE 10 0.0% 4 40.0% 35 156.0 309.9
Other indexes 1,020 2.3% 413 40.5% 1 12.1 131.1
* 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 2,385 5.8% 638 26.8% 4 70.3 535.4
Single 39,038 94.2% 10,665 27.3% 4 131.7 3655.0
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 101 22.4% 25 24.8% 4 31.2 101.9
CORPORATE AUTH 5 1.1% 0 0.0% 6 93.4 159.3
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 303 67.2% 68 22.4% 60 153.8 390.3
EXACT SUBJECT 38 8.4% 10 26.3% 138 412.5 637.7
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 4 0.9% 1 25.0% 9 7.0 3.5
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 455 100% 106 23.3% 20 144.9 381.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.5%
BRIEF 66.0%
LONG 10.5%
MARC 4.8%
FIELDS 2.8%
TAG 2.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.3%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.9%
Ten most frequent errors:
1. NS command - no next screen 32.7%
2. First word of command is invalid 26.1%
3. FIND command with invalid index name 12.3%
4. DISPLAY command contains invalid word 4.9%
5. Search term missing from search command 2.4%
6. PS command - no previous screen 1.7%
7. Valid command at an inappropriate time 1.5%
8. Command contains escape or arrow key 1.5%
9. DISPLAY command - no FIND results 1.4%
10. KW search in database w/o KW index 1.3%
11. All others 14.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.4%
2. FIND 11.8%
3. Unrecognized term 6.5%
4. COMMAND WORDS 5.9%
5. INDEXES 5.0%
6. DATABASES 3.2%
7. PASSWORDS 3.1%
8. CATALOG 2.9%
9. NRLF 1.9%
10. LOCATE (PE DB) 1.9%
11. All others 34.3%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.9%
2. First word of command is invalid 14.3%
3. FIND command with invalid index name 9.9%
4. DISPLAY command - middle of >1 screen 4.4%
5. F/BR with index invalid in current DB 2.6%
6. DISPLAY command-first of >1 screen 2.6%
7. DISPLAY command - last of >1 screen 2.1%
8. DISPLAY command-complete in one screen 2.0%
9. NS command - no next screen 2.0%
10. KW search in database w/o KW index 1.9%
11. All others 33.4%
Ten most frequent SHOW requests:
1. HISTORY 50.4%
2. MAIL STATUS 10.5%
3. SEARCH 7.8%
4. GLOSSARY 5.8%
5. SETTINGS 4.3%
6. DATABASE NEWS 2.7%
7. TIME 2.3%
8. 2292 1.9%
9. NEWS 1.6%
10. STATISTICS 1.6%
11. All others 11.2%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)