MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 06/01/02 through 06/07/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 362 1,524 1,886
Davis 1,119 133 1,252
Irvine 279 0 279
Los Angeles 1 339 340
Riverside 329 69 398
San Diego 309 140 449
San Francisco 147 0 147
Santa Barbara 234 72 306
Santa Cruz 114 111 225
LBL 0 65 65
LLL 0 21 21
Other - UC 27 155 182
CSL 0 108 108
CSU n/a 94 94
Other-Non-UC n/a 2,941 2,941
_______ ______ _____
2,921 5,772 8,693
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 178 704 4,759
2-4 a.m. 156 524 9,181
4-6 a.m. 102 352 2,377
6-8 a.m. 315 997 6,638
8-10 a.m. 1,120 4,309 30,775
10-12 a.m. 1,627 6,428 46,244
12-2 p.m. 1,514 5,882 42,227
2-4 p.m. 1,804 7,790 49,959
4-6 p.m. 1,032 4,395 26,667
6-8 p.m. 314 1,092 7,755
8-10 p.m. 223 781 6,071
10-12 p.m. 308 1,211 9,230
__________ __________ __________ _________________
Total: 8,693 34,465 241,883
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,003 5,400 6,403
Davis 4,218 862 5,080
Irvine 1,302 0 1,302
Los Angeles 0 1,063 1,063
Riverside 1,998 131 2,129
San Diego 1,057 244 1,301
San Francisco 475 0 475
Santa Barbara 804 128 932
Santa Cruz 682 359 1,041
LBL 0 83 83
LLL 0 31 31
Other - UC 18 1,131 1,149
CSL 0 135 135
CSU n/a 782 782
Other-Non-UC n/a 12,559 12,559
_______ ______ _____
11,557 22,908 34,465
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,389 32,911 41,300
Davis 29,831 3,693 33,524
Irvine 8,624 0 8,624
Los Angeles 0 7,928 7,928
Riverside 10,939 1,385 12,324
San Diego 5,837 1,718 7,555
San Francisco 5,504 0 5,504
Santa Barbara 7,861 1,221 9,082
Santa Cruz 3,877 3,853 7,730
LBL 0 336 336
LLL 0 226 226
Other - UC 64 3,434 3,498
CSL 0 1,063 1,063
CSU n/a 5,100 5,100
Other-Non-UC n/a 98,089 98,089
_______ ______ _____
80,926 160,957 241,883
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 2.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:25
Average session length (minutes:seconds) 16:33
Longest session recorded (minutes:seconds) 954:06
Average number of searches completed per session 3.9
Retrievals per search - median 2.0
Retrievals per search - average 56.6
Retrievals per search - standard deviation 810.1
Percent of searches completed with 0 results 28.1%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 66.7%
Commands entered, by type, excluding errors:
Total Percentage
FIND 33,348 37.8%
DISPLAY (excluding automatic displays) 29,143 33.1%
ACFIND 5 0.0%
BROWSE 84 0.1%
SELECT 48 0.1%
HELP 438 0.5%
EXPLAIN 490 0.6%
SET/RESET 1,720 2.0%
SHOW 168 0.2%
AT 1,740 2.0%
ADD ON (AND, OR, AND NOT) 1,109 1.3%
LOGON or LOGOFF 15,229 17.3%
COMMENT 0 0.0%
SAVE 726 0.8%
USE 575 0.7%
OTHER 3,321 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 4,794 13.8% 1,181 24.6% 10 86.0 586.4
AUTHOR 1,148 3.3% 306 26.7% 12 180.5 1297.6
CORPORATE AUTH 271 0.8% 92 33.9% 21 350.4 984.3
EXACT CA 2 0.0% 1 50.0% 1 1.0 0.0
TITLE WORD 8,740 25.2% 2,881 33.0% 3 33.0 243.4
EXACT TITLE 4,524 13.1% 1,469 32.5% 2 25.9 327.4
TITLE -> TW 858 2.5% 229 26.7% 8 59.0 134.4
TITLE -> XT 1,089 3.1% 477 43.8% 1 10.1 76.9
SUBJECT 1,140 3.3% 382 33.5% 51 631.7 3866.8
EXACT SUBJECT 81 0.2% 14 17.3% 48 420.9 898.1
PERIODICAL 7,083 20.5% 1,552 21.9% 5 76.0 1071.2
EXACT PE 2,732 7.9% 439 16.1% 2 13.0 68.2
RPE 1 0.0% 1 100% 0 0.0 0.0
XRP 1 0.0% 0 0.0% 5 5.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 45 0.1% 11 24.4% 31 164.9 422.1
DATE 375 1.1% 80 21.3% 4 75.4 358.2
FORM 183 0.5% 40 21.9% 10 258.7 1385.2
NUMBER* 32 0.1% 14 43.8% 2 1144.2 4718.1
MUSIC* 4 0.0% 3 75.0% 1 1.0 0.0
SERIES 814 2.4% 257 31.6% 4 96.4 776.4
UNIFORM TITLE 4 0.0% 1 25.0% 1 21.7 35.8
Other indexes 697 2.0% 303 43.5% 1 10.7 95.8
* 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 1,551 4.7% 422 27.2% 2 64.8 566.1
Single 31,416 95.3% 8,857 28.2% 4 79.2 984.7
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 11 14.9% 1 9.1% 24 120.2 206.9
CORPORATE AUTH 1 1.4% 0 0.0% 136 136.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 41 55.4% 7 17.1% 31 103.8 165.2
EXACT SUBJECT 17 23.0% 1 5.9% 35 69.3 74.4
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 4 5.4% 1 25.0% 81 75.0 33.4
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 80 100% 11 13.7% 29 90.4 145.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.5%
BRIEF 66.3%
LONG 10.0%
MARC 4.2%
FIELDS 3.6%
TAG 2.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.7%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.5%
Ten most frequent errors:
1. NS command - no next screen 35.7%
2. First word of command is invalid 25.0%
3. FIND command with invalid index name 12.2%
4. DISPLAY command contains invalid word 4.3%
5. Search term missing from search command 2.4%
6. PS command - no previous screen 1.8%
7. DISPLAY command - no FIND results 1.4%
8. KW search in database w/o KW index 1.3%
9. Command contains escape or arrow key 1.1%
10. Valid command at an inappropriate time 1.1%
11. All others 13.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 25.9%
2. FIND 14.5%
3. INDEXES 6.9%
4. COMMAND WORDS 6.1%
5. Unrecognized term 5.7%
6. PASSWORDS 3.7%
7. DISPLAY 2.7%
8. CATALOG 2.7%
9. NRLF 2.0%
10. LOCATE (PE DB) 1.8%
11. All others 28.0%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 26.8%
2. First word of command is invalid 13.4%
3. FIND command with invalid index name 12.6%
4. DISPLAY command - middle of >1 screen 4.4%
5. FIND command retrieves >1 book 3.6%
6. DISPLAY command-first of >1 screen 3.3%
7. NS command - no next screen 2.7%
8. DISPLAY command-complete in one screen 2.7%
9. F/BR command with invalid search term 1.6%
10. FIND command retrieves 1 book 1.5%
11. All others 27.4%
Ten most frequent SHOW requests:
1. HISTORY 53.1%
2. SEARCH 6.3%
3. SYSTEMS INFORMATION 5.6%
4. LAUC NEWS 4.4%
5. GLOSSARY 3.8%
6. SETTINGS 3.8%
7. NEWS 2.5%
8. 0211 1.9%
9. SYSTEM NEWS 1.9%
10. BIBLIOGRAPHIC SOFTWARE 1.3%
11. All others 15.6%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)