MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 06/15/02 through 06/21/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 340 1,188 1,528
Davis 693 86 779
Irvine 178 0 178
Los Angeles 1 306 307
Riverside 252 44 296
San Diego 198 78 276
San Francisco 108 0 108
Santa Barbara 143 27 170
Santa Cruz 85 98 183
LBL 0 52 52
LLL 0 20 20
Other - UC 14 152 166
CSL 0 52 52
CSU n/a 101 101
Other-Non-UC n/a 2,185 2,185
_______ ______ _____
2,012 4,389 6,401
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 102 309 2,600
2-4 a.m. 118 341 4,551
4-6 a.m. 132 334 3,010
6-8 a.m. 272 914 6,306
8-10 a.m. 924 3,167 20,417
10-12 a.m. 1,279 5,435 34,209
12-2 p.m. 1,173 5,101 37,504
2-4 p.m. 1,314 5,881 33,896
4-6 p.m. 648 2,454 19,160
6-8 p.m. 195 783 7,845
8-10 p.m. 103 381 3,356
10-12 p.m. 141 559 4,664
__________ __________ __________ _________________
Total: 6,401 25,659 177,518
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 941 3,817 4,758
Davis 2,691 502 3,193
Irvine 1,045 0 1,045
Los Angeles 5 704 709
Riverside 1,110 111 1,221
San Diego 456 160 616
San Francisco 359 0 359
Santa Barbara 590 41 631
Santa Cruz 2,323 360 2,683
LBL 0 63 63
LLL 0 59 59
Other - UC 13 1,073 1,086
CSL 0 106 106
CSU n/a 390 390
Other-Non-UC n/a 8,740 8,740
_______ ______ _____
9,533 16,126 25,659
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 9,706 24,371 34,077
Davis 17,603 2,429 20,032
Irvine 6,198 0 6,198
Los Angeles 34 6,029 6,063
Riverside 6,092 3,347 9,439
San Diego 2,085 1,968 4,053
San Francisco 2,343 0 2,343
Santa Barbara 5,721 397 6,118
Santa Cruz 4,112 2,516 6,628
LBL 0 180 180
LLL 0 366 366
Other - UC 32 4,028 4,060
CSL 0 1,203 1,203
CSU n/a 4,794 4,794
Other-Non-UC n/a 71,964 71,964
_______ ______ _____
53,926 123,592 177,518
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 2.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 2.0
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:22
Average session length (minutes:seconds) 17:46
Longest session recorded (minutes:seconds) 1113
Average number of searches completed per session 4.0
Retrievals per search - median 2.0
Retrievals per search - average 55.5
Retrievals per search - standard deviation 907.5
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 66.2%
Commands entered, by type, excluding errors:
Total Percentage
FIND 24,569 37.6%
DISPLAY (excluding automatic displays) 21,630 33.1%
ACFIND 10 0.0%
BROWSE 155 0.2%
SELECT 66 0.1%
HELP 275 0.4%
EXPLAIN 313 0.5%
SET/RESET 1,180 1.8%
SHOW 119 0.2%
AT 1,368 2.1%
ADD ON (AND, OR, AND NOT) 1,074 1.6%
LOGON or LOGOFF 11,273 17.3%
COMMENT 0 0.0%
SAVE 405 0.6%
USE 416 0.6%
OTHER 2,435 3.7%
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 3,235 12.8% 730 22.6% 11 78.5 268.9
AUTHOR 809 3.2% 186 23.0% 11 135.2 842.9
CORPORATE AUTH 216 0.9% 68 31.5% 17 461.0 3231.8
EXACT CA 9 0.0% 3 33.3% 4 41.0 92.1
TITLE WORD 5,792 22.9% 1,939 33.5% 4 42.4 264.7
EXACT TITLE 5,041 20.0% 1,455 28.9% 2 24.2 198.4
TITLE -> TW 540 2.1% 132 24.4% 6 135.7 1960.0
TITLE -> XT 784 3.1% 321 40.9% 1 5.6 26.8
SUBJECT 790 3.1% 252 31.9% 47 379.6 1155.5
EXACT SUBJECT 75 0.3% 21 28.0% 52 2442.6 15838.2
PERIODICAL 4,896 19.4% 1,076 22.0% 4 65.3 643.1
EXACT PE 1,674 6.6% 253 15.1% 3 15.8 101.2
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 20 0.1% 5 25.0% 11 85.6 189.0
DATE 187 0.7% 35 18.7% 3 79.5 275.0
FORM 151 0.6% 28 18.5% 12 49.6 117.6
NUMBER* 57 0.2% 33 57.9% 2 31.3 62.0
MUSIC* 5 0.0% 4 80.0% 5 5.0 0.0
SERIES 509 2.0% 169 33.2% 2 33.9 95.7
UNIFORM TITLE 2 0.0% 0 0.0% 26 26.0 0.0
Other indexes 468 1.9% 215 45.9% 1 11.2 70.7
* 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 898 3.7% 228 25.4% 3 34.4 148.7
Single 23,417 96.3% 6,448 27.5% 4 73.9 1089.1
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 8 5.3% 1 12.5% 3 203.4 420.4
CORPORATE AUTH 1 0.7% 1 100% 0 0.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 113 75.3% 30 26.5% 30 116.4 168.8
EXACT SUBJECT 28 18.7% 4 14.3% 140 229.0 201.7
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 151 100% 36 23.8% 43 144.2 201.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.2%
BRIEF 68.3%
LONG 9.2%
MARC 4.6%
FIELDS 3.5%
TAG 2.1%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.2%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.0%
Ten most frequent errors:
1. NS command - no next screen 34.3%
2. First word of command is invalid 24.3%
3. FIND command with invalid index name 11.3%
4. DISPLAY command contains invalid word 4.9%
5. Search term missing from search command 2.8%
6. PS command - no previous screen 1.9%
7. 167 1.8%
8. DISPLAY command - no FIND results 1.7%
9. Command contains escape or arrow key 1.5%
10. Valid command at an inappropriate time 1.1%
11. All others 14.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 30.0%
2. FIND 10.9%
3. COMMAND WORDS 8.0%
4. INDEXES 6.4%
5. Unrecognized term 4.8%
6. BROWSE 3.5%
7. DISPLAY 3.2%
8. NRLF 2.2%
9. PASSWORDS 2.2%
10. CATALOG 1.6%
11. All others 27.2%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 26.4%
2. First word of command is invalid 14.1%
3. FIND command with invalid index name 11.4%
4. DISPLAY command-first of >1 screen 4.6%
5. DISPLAY command - middle of >1 screen 4.6%
6. NS command - no next screen 2.9%
7. FIND command retrieves >1 book 2.9%
8. TW search with zero results 2.6%
9. F/BR command with invalid search term 2.0%
10. FIND command retrieves 1 book 2.0%
11. All others 26.5%
Ten most frequent SHOW requests:
1. HISTORY 64.9%
2. SETTINGS 6.1%
3. GLOSSARY 5.3%
4. DATABASE NEWS 4.4%
5. SEARCH 4.4%
6. PE DISPLAY 2.6%
7. NEWS 2.6%
8. MAIL STATUS 2.6%
9. SYSTEMS INFORMATION 1.8%
10. 0246 0.9%
11. All others 4.4%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)