MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 04/01/00 through 04/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,577 14,061 21,638
Davis 11,317 1,602 12,919
Irvine 4,885 0 4,885
Los Angeles 1,468 4,276 5,744
Riverside 3,643 676 4,319
San Diego 2,250 1,253 3,503
San Francisco 1,712 0 1,712
Santa Barbara 3,116 1,814 4,930
Santa Cruz 2,788 1,303 4,091
LBL 0 505 505
LLL 0 422 422
Other - UC 319 1,535 1,854
CSL 0 814 814
CSU n/a 930 930
Other-Non UC n/a 21,483 21,483
_______ ______ _____
39,075 50,674 89,749
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,499 5,847 47,098
2-4 a.m. 1,052 5,301 30,837
4-6 a.m. 909 3,882 29,618
6-8 a.m. 2,166 6,801 56,115
8-10 a.m. 9,808 34,334 253,137
10-12 a.m. 16,382 56,670 427,684
12-2 p.m. 16,320 56,279 429,879
2-4 p.m. 18,567 61,852 450,278
4-6 p.m. 12,565 41,491 325,198
6-8 p.m. 4,965 19,353 159,185
8-10 p.m. 3,189 9,791 80,187
10-12 p.m. 2,327 7,744 57,329
__________ __________ __________ _________________
Total: 89,749 309,345 2,346,545
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 21,567 43,679 65,246
Davis 43,646 6,599 50,245
Irvine 15,869 0 15,869
Los Angeles 4,300 11,550 15,850
Riverside 12,277 1,690 13,967
San Diego 6,206 2,390 8,596
San Francisco 2,998 0 2,998
Santa Barbara 10,958 4,226 15,184
Santa Cruz 12,382 3,984 16,366
LBL 0 666 666
LLL 0 1,102 1,102
Other - UC 299 6,082 6,381
CSL 0 2,493 2,493
CSU n/a 4,615 4,615
Other-Non UC n/a 89,767 89,767
_______ ______ _____
130,502 178,843 309,345
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 170,146 365,867 536,013
Davis 273,206 34,361 307,567
Irvine 108,006 0 108,006
Los Angeles 31,765 96,472 128,237
Riverside 115,798 19,060 134,858
San Diego 38,208 24,749 62,957
San Francisco 22,382 0 22,382
Santa Barbara 89,664 43,896 133,560
Santa Cruz 62,792 30,188 92,980
LBL 0 6,059 6,059
LLL 0 7,980 7,980
Other - UC 2,839 40,425 43,264
CSL 0 12,590 12,590
CSU n/a 36,962 36,962
Other-Non UC n/a 713,130 713,130
_______ ______ _____
914,806 1,431,739 2,346,545
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 2.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.9
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1037
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 72.1
Retrievals per search - standard deviation 902.3
Percent of searches completed with 0 results 27.4%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 59.1%
Commands entered, by type, excluding errors:
Total Percentage
FIND 299,094 35.7%
DISPLAY (excluding automatic displays) 265,003 31.6%
ACFIND 56 0.0%
BROWSE 2,438 0.3%
SELECT 1,710 0.2%
HELP 9,730 1.2%
EXPLAIN 8,874 1.1%
SET/RESET 18,644 2.2%
SHOW 2,465 0.3%
AT 19,004 2.3%
ADD ON (AND, OR, AND NOT) 10,104 1.2%
LOGON or LOGOFF 148,264 17.7%
COMMENT 11 0.0%
SAVE 6,670 0.8%
USE 6,591 0.8%
OTHER 38,801 4.6%
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 45,884 14.7% 11,007 24.0% 11 93.8 441.6
AUTHOR 15,223 4.9% 3,554 23.3% 14 121.9 764.4
CORPORATE AUTH 2,760 0.9% 1,079 39.1% 23 752.5 4529.3
EXACT CA 108 0.0% 51 47.2% 23 440.6 974.1
TITLE WORD 73,277 23.5% 22,305 30.4% 5 46.2 338.5
EXACT TITLE 40,024 12.8% 11,942 29.8% 2 24.7 159.7
TITLE -> TW 7,311 2.3% 1,761 24.1% 10 71.1 408.8
TITLE -> XT 8,785 2.8% 4,055 46.2% 1 9.7 87.5
SUBJECT 22,898 7.3% 8,852 38.7% 44 418.0 2627.1
EXACT SUBJECT 1,225 0.4% 382 31.2% 63 497.1 2114.2
PERIODICAL 57,549 18.4% 11,750 20.4% 5 98.7 1138.0
EXACT PE 17,651 5.7% 2,978 16.9% 3 27.7 364.3
RPE 35 0.0% 12 34.3% 8 28.1 41.9
XRP 3 0.0% 0 0.0% 2 3.0 2.6
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 658 0.2% 131 19.9% 43 597.3 4141.5
DATE 3,743 1.2% 965 25.8% 4 94.3 1034.0
FORM 3,631 1.2% 840 23.1% 16 225.0 2389.3
NUMBER* 822 0.3% 189 23.0% 6 83.3 682.5
MUSIC* 46 0.0% 29 63.0% 17 324.6 1244.9
SERIES 5,456 1.7% 1,795 32.9% 5 74.5 332.7
UNIFORM TITLE 94 0.0% 36 38.3% 8 254.1 782.6
Other indexes 5,195 1.7% 2,230 42.9% 1 30.0 452.0
* 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 17,292 5.9% 4,700 27.2% 4 75.7 655.1
Single 276,483 94.1% 76,299 27.6% 5 101.7 1092.3
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 250 11.0% 76 30.4% 4 32.4 76.9
CORPORATE AUTH 16 0.7% 8 50.0% 9 126.8 237.9
EXACT CA 8 0.4% 1 12.5% 8 10.7 8.1
SUBJECT 1,823 80.5% 449 24.6% 61 270.1 1943.5
EXACT SUBJECT 160 7.1% 22 13.7% 43 143.2 259.5
UNIFORM TITLE 1 0.0% 1 100% 0 0.0 0.0
SERIES 7 0.3% 1 14.3% 35 37.5 40.1
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 2,312 100% 564 24.4% 44 228.8 1726.8
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.3%
BRIEF 71.3%
LONG 9.7%
MARC 3.8%
FIELDS 2.4%
TAG 1.7%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.7%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.9%
Ten most frequent errors:
1. First word of command is invalid 28.4%
2. NS command - no next screen 27.6%
3. FIND command with invalid index name 12.6%
4. DISPLAY command contains invalid word 3.9%
5. KW search in database w/o KW index 2.9%
6. Search term missing from search command 2.6%
7. PS command - no previous screen 2.0%
8. Valid command at an inappropriate time 1.7%
9. DISPLAY command - no FIND results 1.6%
10. Index invalid in current database 1.3%
11. All others 15.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 25.0%
2. FIND 15.0%
3. INDEXES 7.8%
4. COMMAND WORDS 6.4%
5. Unrecognized term 5.1%
6. PASSWORDS 3.3%
7. DATABASES 2.8%
8. DISPLAY 2.5%
9. ADD-ON SEARCH 1.7%
10. CATALOG 1.7%
11. All others 28.8%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 20.2%
2. First word of command is invalid 15.7%
3. FIND command with invalid index name 12.4%
4. DISPLAY command - middle of >1 screen 4.3%
5. NS command - no next screen 3.0%
6. DISPLAY command-first of >1 screen 2.9%
7. FIND command retrieves >1 book 2.9%
8. DISPLAY command-complete in one screen 2.4%
9. KW search in database w/o KW index 2.4%
10. Help requested from SET DB command 2.3%
11. All others 31.4%
Ten most frequent SHOW requests:
1. HISTORY 33.0%
2. SEARCH 15.7%
3. GLOSSARY 9.7%
4. TIME 9.1%
5. MAIL STATUS 4.9%
6. SYSTEM NEWS 3.4%
7. SETTINGS 3.3%
8. LAUC NEWS 2.3%
9. DATABASE NEWS 1.9%
10. SYSTEMS INFORMATION 1.4%
11. All others 15.4%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)