MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 01/01/00 through 01/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,310 12,536 17,846
Davis 13,177 2,017 15,194
Irvine 5,596 0 5,596
Los Angeles 2,200 6,232 8,432
Riverside 3,641 923 4,564
San Diego 2,619 1,372 3,991
San Francisco 2,014 0 2,014
Santa Barbara 3,372 2,246 5,618
Santa Cruz 2,824 3,047 5,871
LBL 0 531 531
LLL 0 631 631
Other - UC 378 1,048 1,426
CSL 0 803 803
CSU n/a 780 780
Other-Network UC n/a 24,988 24,988
_______ ______ _____
41,131 57,154 98,285
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,491 7,780 51,625
2-4 a.m. 1,328 5,912 50,786
4-6 a.m. 1,209 4,430 39,089
6-8 a.m. 2,440 9,160 72,145
8-10 a.m. 10,859 40,621 291,563
10-12 a.m. 17,971 64,984 478,044
12-2 p.m. 18,525 65,673 505,921
2-4 p.m. 21,002 73,081 534,993
4-6 p.m. 13,407 46,231 355,470
6-8 p.m. 4,699 17,837 132,333
8-10 p.m. 3,063 14,243 88,349
10-12 p.m. 2,291 11,813 64,234
__________ __________ __________ _________________
Total: 98,285 361,765 2,664,552
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,446 40,065 55,511
Davis 48,524 8,448 56,972
Irvine 17,158 0 17,158
Los Angeles 8,786 17,744 26,530
Riverside 12,656 2,064 14,720
San Diego 8,010 2,486 10,496
San Francisco 3,607 0 3,607
Santa Barbara 14,421 5,525 19,946
Santa Cruz 11,979 15,914 27,893
LBL 0 1,057 1,057
LLL 0 1,642 1,642
Other - UC 257 17,765 18,022
CSL 0 1,898 1,898
CSU n/a 3,492 3,492
Other-Network UC n/a 102,821 102,821
_______ ______ _____
140,844 220,921 361,765
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 127,519 363,309 490,828
Davis 322,552 47,667 370,219
Irvine 152,318 0 152,318
Los Angeles 59,889 184,139 244,028
Riverside 88,347 18,594 106,941
San Diego 48,924 24,426 73,350
San Francisco 27,005 0 27,005
Santa Barbara 122,640 55,485 178,125
Santa Cruz 46,554 76,857 123,411
LBL 0 10,518 10,518
LLL 0 11,481 11,481
Other - UC 978 35,409 36,387
CSL 0 10,176 10,176
CSU n/a 26,989 26,989
Other-Network UC n/a 802,776 802,776
_______ ______ _____
996,726 1,667,826 2,664,552
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 4.9
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) 908:29
Average number of searches completed per session 3.6
Retrievals per search - median 2.0
Retrievals per search - average 82.8
Retrievals per search - standard deviation 2039.8
Percent of searches completed with 0 results 25.6%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 56.3%
Commands entered, by type, excluding errors:
Total Percentage
FIND 346,638 37.2%
DISPLAY (excluding automatic displays) 285,207 30.6%
ACFIND 91 0.0%
BROWSE 2,052 0.2%
SELECT 1,430 0.2%
HELP 10,822 1.2%
EXPLAIN 10,204 1.1%
SET/RESET 20,301 2.2%
SHOW 2,962 0.3%
AT 18,395 2.0%
ADD ON (AND, OR, AND NOT) 14,965 1.6%
LOGON or LOGOFF 162,189 17.4%
COMMENT 9 0.0%
SAVE 6,591 0.7%
USE 7,463 0.8%
OTHER 43,213 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 53,340 14.8% 11,914 22.3% 12 97.0 446.7
AUTHOR 18,499 5.1% 4,319 23.3% 13 117.2 587.5
CORPORATE AUTH 2,873 0.8% 1,091 38.0% 23 515.9 3140.9
EXACT CA 91 0.0% 43 47.3% 250 817.3 1089.2
TITLE WORD 90,027 25.0% 25,875 28.7% 4 43.6 298.2
EXACT TITLE 59,460 16.5% 14,575 24.5% 2 24.1 208.1
TITLE -> TW 8,369 2.3% 1,997 23.9% 9 88.2 1350.2
TITLE -> XT 10,572 2.9% 4,548 43.0% 1 10.0 94.3
SUBJECT 22,036 6.1% 8,557 38.8% 48 575.9 5207.5
EXACT SUBJECT 1,177 0.3% 348 29.6% 51 494.0 1574.6
PERIODICAL 53,329 14.8% 10,662 20.0% 5 129.4 1613.3
EXACT PE 19,491 5.4% 3,213 16.5% 3 28.5 368.6
RPE 28 0.0% 10 35.7% 16 85.8 210.1
XRP 4 0.0% 1 25.0% 13 475.7 803.1
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 647 0.2% 108 16.7% 39 307.8 1603.6
DATE 6,196 1.7% 1,302 21.0% 3 68.4 1010.2
FORM 3,485 1.0% 774 22.2% 12 315.5 3544.3
NUMBER* 364 0.1% 106 29.1% 2 37.1 180.7
MUSIC* 119 0.0% 65 54.6% 10 70.2 133.2
SERIES 5,983 1.7% 2,043 34.1% 5 72.6 412.6
UNIFORM TITLE 87 0.0% 36 41.4% 37 371.2 905.9
Other indexes 4,315 1.2% 1,802 41.8% 1 36.0 523.2
* 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 19,496 5.7% 5,019 25.7% 3 72.9 1007.0
Single 320,414 94.3% 83,124 25.9% 5 104.7 1517.5
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 375 19.9% 62 16.5% 5 57.3 434.5
CORPORATE AUTH 12 0.6% 7 58.3% 55 74.4 87.6
EXACT CA 6 0.3% 3 50.0% 1 1.3 0.6
SUBJECT 1,374 72.9% 317 23.1% 56 197.0 698.6
EXACT SUBJECT 104 5.5% 15 14.4% 32 221.6 468.6
UNIFORM TITLE 2 0.1% 1 50.0% 8 8.0 0.0
SERIES 12 0.6% 4 33.3% 6 27.1 61.6
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,953 100% 424 21.7% 31 162.8 626.8
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.7%
BRIEF 72.4%
LONG 10.0%
MARC 3.2%
FIELDS 2.0%
TAG 1.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.4%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.5%
Ten most frequent errors:
1. First word of command is invalid 28.1%
2. NS command - no next screen 28.1%
3. FIND command with invalid index name 13.0%
4. DISPLAY command contains invalid word 3.4%
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 1.6%
9. DISPLAY command - no FIND results 1.5%
10. Index invalid in current database 1.3%
11. All others 15.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.3%
2. FIND 14.4%
3. INDEXES 6.7%
4. COMMAND WORDS 6.3%
5. Unrecognized term 4.8%
6. PASSWORDS 3.2%
7. DISPLAY 2.7%
8. DATABASES 2.5%
9. LOCATE (PE DB) 2.0%
10. CATALOG 2.0%
11. All others 28.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 21.5%
2. First word of command is invalid 14.2%
3. FIND command with invalid index name 11.8%
4. DISPLAY command - middle of >1 screen 4.3%
5. FIND command retrieves >1 book 3.2%
6. NS command - no next screen 3.1%
7. DISPLAY command-first of >1 screen 2.9%
8. KW search in database w/o KW index 2.4%
9. DISPLAY command - last of >1 screen 2.3%
10. DISPLAY command-complete in one screen 2.1%
11. All others 32.2%
Ten most frequent SHOW requests:
1. HISTORY 32.5%
2. SEARCH 11.6%
3. SYSTEM NEWS 8.7%
4. GLOSSARY 7.8%
5. MAIL STATUS 4.8%
6. TIME 4.0%
7. SETTINGS 3.8%
8. SYSTEM3 NEWS 1.7%
9. SYSTEMS INFORMATION 1.7%
10. DATABASE NEWS 1.6%
11. All others 22.0%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)