MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 11/03/01 through 11/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 699 2,133 2,832
Davis 1,797 197 1,994
Irvine 505 0 505
Los Angeles 6 510 516
Riverside 354 106 460
San Diego 272 133 405
San Francisco 200 0 200
Santa Barbara 262 104 366
Santa Cruz 226 113 339
LBL 0 94 94
LLL 0 59 59
Other - UC 24 259 283
CSL 0 154 154
CSU n/a 143 143
Other-Non-UC n/a 3,688 3,688
_______ ______ _____
4,345 7,693 12,038
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 242 709 5,403
2-4 a.m. 231 740 6,312
4-6 a.m. 206 807 6,018
6-8 a.m. 459 1,508 12,048
8-10 a.m. 1,568 5,471 41,495
10-12 a.m. 2,367 9,410 66,726
12-2 p.m. 2,052 7,059 49,423
2-4 p.m. 2,214 8,272 57,272
4-6 p.m. 1,445 4,650 34,679
6-8 p.m. 588 1,691 15,165
8-10 p.m. 348 917 8,408
10-12 p.m. 318 970 5,987
__________ __________ __________ _________________
Total: 12,038 42,204 308,936
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,031 6,318 8,349
Davis 6,196 848 7,044
Irvine 2,073 0 2,073
Los Angeles 2 1,400 1,402
Riverside 1,319 239 1,558
San Diego 816 210 1,026
San Francisco 369 0 369
Santa Barbara 1,614 231 1,845
Santa Cruz 2,690 269 2,959
LBL 0 94 94
LLL 0 119 119
Other - UC 12 643 655
CSL 0 150 150
CSU n/a 590 590
Other-Non-UC n/a 13,971 13,971
_______ ______ _____
17,122 25,082 42,204
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 17,256 53,068 70,324
Davis 36,580 4,249 40,829
Irvine 12,725 0 12,725
Los Angeles 65 10,436 10,501
Riverside 11,614 1,214 12,828
San Diego 4,535 1,452 5,987
San Francisco 2,631 0 2,631
Santa Barbara 13,796 2,546 16,342
Santa Cruz 5,698 4,634 10,332
LBL 0 899 899
LLL 0 1,424 1,424
Other - UC 115 6,854 6,969
CSL 0 750 750
CSU n/a 9,642 9,642
Other-Non-UC n/a 106,753 106,753
_______ ______ _____
105,015 203,921 308,936
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 3.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:44
Average session length (minutes:seconds) 14:21
Longest session recorded (minutes:seconds) 757:43
Average number of searches completed per session 3.5
Retrievals per search - median 2.0
Retrievals per search - average 66.2
Retrievals per search - standard deviation 1053.7
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 65.6%
Commands entered, by type, excluding errors:
Total Percentage
FIND 40,502 35.7%
DISPLAY (excluding automatic displays) 37,544 33.1%
ACFIND 2 0.0%
BROWSE 331 0.3%
SELECT 215 0.2%
HELP 851 0.7%
EXPLAIN 746 0.7%
SET/RESET 2,874 2.5%
SHOW 268 0.2%
AT 2,564 2.3%
ADD ON (AND, OR, AND NOT) 1,676 1.5%
LOGON or LOGOFF 19,752 17.4%
COMMENT 0 0.0%
SAVE 948 0.8%
USE 762 0.7%
OTHER 4,445 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 6,182 14.5% 1,372 22.2% 10 82.5 371.0
AUTHOR 1,437 3.4% 360 25.1% 11 86.6 247.0
CORPORATE AUTH 467 1.1% 173 37.0% 15 1424.2 10593.4
EXACT CA 18 0.0% 6 33.3% 59 719.6 2241.5
TITLE WORD 8,826 20.7% 2,852 32.3% 4 43.6 359.9
EXACT TITLE 7,596 17.8% 2,017 26.6% 2 23.3 153.5
TITLE -> TW 951 2.2% 218 22.9% 11 61.4 154.4
TITLE -> XT 1,214 2.9% 559 46.0% 1 19.3 185.3
SUBJECT 2,446 5.7% 859 35.1% 45 396.7 1440.0
EXACT SUBJECT 190 0.4% 61 32.1% 149 900.6 1709.8
PERIODICAL 7,167 16.8% 1,518 21.2% 4 77.0 1039.6
EXACT PE 3,058 7.2% 486 15.9% 2 25.1 293.9
RPE 2 0.0% 2 100% 0 0.0 0.0
XRP 4 0.0% 3 75.0% 9 9.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 109 0.3% 14 12.8% 51 481.6 2233.1
DATE 689 1.6% 147 21.3% 4 53.8 198.6
FORM 385 0.9% 66 17.1% 21 230.5 870.2
NUMBER* 51 0.1% 31 60.8% 2 5.0 8.8
MUSIC* 2 0.0% 1 50.0% 71 71.0 0.0
SERIES 931 2.2% 311 33.4% 3 54.7 173.7
UNIFORM TITLE 11 0.0% 3 27.3% 1,892 1742.9 1753.9
Other indexes 823 1.9% 336 40.8% 1 14.7 83.0
* 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 2,361 5.9% 548 23.2% 4 64.9 405.2
Single 37,557 94.1% 10,258 27.3% 4 93.4 1292.6
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 18 5.9% 1 5.6% 5 31.5 50.6
CORPORATE AUTH 1 0.3% 0 0.0% 64 64.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 268 87.3% 68 25.4% 62 194.5 1100.4
EXACT SUBJECT 16 5.2% 0 0.0% 58 144.3 385.7
UNIFORM TITLE 1 0.3% 0 0.0% 49 49.0 0.0
SERIES 3 1.0% 0 0.0% 9 49.7 77.5
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 315 100% 71 22.5% 52 173.7 1001.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.4%
BRIEF 67.4%
LONG 9.5%
MARC 4.1%
FIELDS 2.8%
TAG 2.9%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.9%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.4%
Ten most frequent errors:
1. NS command - no next screen 32.7%
2. First word of command is invalid 27.6%
3. FIND command with invalid index name 12.2%
4. DISPLAY command contains invalid word 3.7%
5. Search term missing from search command 2.6%
6. PS command - no previous screen 2.0%
7. Valid command at an inappropriate time 1.7%
8. KW search in database w/o KW index 1.6%
9. DISPLAY command - no FIND results 1.3%
10. Command contains escape or arrow key 1.2%
11. All others 13.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 29.9%
2. FIND 13.4%
3. COMMAND WORDS 6.3%
4. Unrecognized term 5.5%
5. INDEXES 5.1%
6. PASSWORDS 4.8%
7. DISPLAY 2.8%
8. CATALOG 2.5%
9. DATABASES 2.0%
10. ADD-ON SEARCH 1.7%
11. All others 25.9%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.1%
2. First word of command is invalid 14.6%
3. FIND command with invalid index name 13.5%
4. DISPLAY command - middle of >1 screen 4.7%
5. DISPLAY command-first of >1 screen 3.6%
6. NS command - no next screen 3.0%
7. DISPLAY command-complete in one screen 2.7%
8. Help requested from SET DB command 2.5%
9. FIND command retrieves >1 book 2.2%
10. DISPLAY command - last of >1 screen 2.2%
11. All others 28.0%
Ten most frequent SHOW requests:
1. HISTORY 44.8%
2. SEARCH 13.2%
3. GLOSSARY 7.2%
4. SETTINGS 6.0%
5. DATABASE NEWS 3.6%
6. NEWS 2.8%
7. MEDLINE NEWS 2.4%
8. SYSTEMS INFORMATION 2.4%
9. MAIL STATUS 2.0%
10. IAC NEWS 1.6%
11. All others 14.0%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)