MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 09/01/99 through 09/30/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,967 16,792 25,759
Davis 12,868 1,869 14,737
Irvine 5,630 0 5,630
Los Angeles 1,515 4,059 5,574
Riverside 3,182 1,397 4,579
San Diego 2,826 1,622 4,448
San Francisco 2,852 45 2,897
Santa Barbara 3,607 2,383 5,990
Santa Cruz 2,232 3,143 5,375
LBL 0 607 607
LLL 0 602 602
Other - UC 450 1,458 1,908
CSL 0 890 890
CSU n/a 1,439 1,439
Other-Network UC n/a 27,581 27,581
_______ ______ _____
44,129 63,887 108,016
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,751 8,421 53,333
2-4 a.m. 1,237 7,502 48,023
4-6 a.m. 1,162 5,039 37,843
6-8 a.m. 2,789 10,151 75,235
8-10 a.m. 12,316 39,574 289,169
10-12 a.m. 20,018 66,432 502,195
12-2 p.m. 20,152 64,063 500,275
2-4 p.m. 23,412 74,026 559,920
4-6 p.m. 14,696 45,097 333,659
6-8 p.m. 4,863 13,888 100,719
8-10 p.m. 3,054 8,463 72,607
10-12 p.m. 2,566 9,949 76,229
__________ __________ __________ _________________
Total: 108,016 352,605 2,649,207
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 27,796 49,954 77,750
Davis 42,125 7,922 50,047
Irvine 15,896 0 15,896
Los Angeles 2,759 8,606 11,365
Riverside 10,052 2,454 12,506
San Diego 7,350 3,116 10,466
San Francisco 4,671 68 4,739
Santa Barbara 14,492 6,028 20,520
Santa Cruz 5,132 14,137 19,269
LBL 0 937 937
LLL 0 1,327 1,327
Other - UC 625 4,375 5,000
CSL 0 2,874 2,874
CSU n/a 5,393 5,393
Other-Network UC n/a 114,516 114,516
_______ ______ _____
130,898 221,707 352,605
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 223,583 443,770 667,353
Davis 274,130 35,621 309,751
Irvine 113,287 0 113,287
Los Angeles 20,879 83,077 103,956
Riverside 79,461 23,388 102,849
San Diego 45,600 27,772 73,372
San Francisco 35,687 379 36,066
Santa Barbara 111,972 49,780 161,752
Santa Cruz 37,262 70,474 107,736
LBL 0 10,534 10,534
LLL 0 13,017 13,017
Other - UC 2,500 34,931 37,431
CSL 0 13,414 13,414
CSU n/a 51,565 51,565
Other-Network UC n/a 847,124 847,124
_______ ______ _____
944,361 1,704,846 2,649,207
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 6.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.6
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1061
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 73.7
Retrievals per search - standard deviation 1044.1
Percent of searches completed with 0 results 29.3%
Percent of searches entered that are long 4.3%
Percent of long searches completed
(includes partial results) 55.5%
Commands entered, by type, excluding errors:
Total Percentage
FIND 341,350 35.7%
DISPLAY (excluding automatic displays) 287,566 30.1%
ACFIND 54 0.0%
BROWSE 2,330 0.2%
SELECT 1,535 0.2%
HELP 12,591 1.3%
EXPLAIN 12,046 1.3%
SET/RESET 20,781 2.2%
SHOW 3,257 0.3%
AT 16,800 1.8%
ADD ON (AND, OR, AND NOT) 11,119 1.2%
LOGON or LOGOFF 178,137 18.6%
COMMENT 30 0.0%
SAVE 9,053 0.9%
USE 9,796 1.0%
OTHER 50,484 5.3%
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 54,281 15.3% 13,379 24.6% 12 104.4 532.3
AUTHOR 17,596 5.0% 4,273 24.3% 13 112.7 466.2
CORPORATE AUTH 3,602 1.0% 1,463 40.6% 20 689.1 5140.5
EXACT CA 160 0.0% 68 42.5% 32 624.9 1841.0
TITLE WORD 90,144 25.4% 28,188 31.3% 4 51.3 778.7
EXACT TITLE 44,093 12.4% 15,056 34.1% 2 25.6 204.8
TITLE -> TW 10,561 3.0% 2,781 26.3% 11 95.4 1772.5
TITLE -> XT 10,066 2.8% 4,872 48.4% 2 15.6 160.9
SUBJECT 25,931 7.3% 10,131 39.1% 42 363.2 2012.8
EXACT SUBJECT 1,113 0.3% 375 33.7% 74 433.7 1721.1
PERIODICAL 57,686 16.2% 13,276 23.0% 5 111.9 1248.7
EXACT PE 16,700 4.7% 2,677 16.0% 3 26.9 277.0
RPE 37 0.0% 14 37.8% 4 85.4 247.6
XRP 22 0.0% 4 18.2% 4 5.4 5.1
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 838 0.2% 159 19.0% 38 624.5 5856.1
DATE 5,349 1.5% 1,298 24.3% 3 120.0 1570.3
FORM 3,437 1.0% 921 26.8% 13 354.1 3998.7
NUMBER* 466 0.1% 152 32.6% 1 75.9 922.4
MUSIC* 272 0.1% 127 46.7% 25 103.4 220.7
SERIES 6,728 1.9% 2,594 38.6% 4 108.4 1741.9
UNIFORM TITLE 121 0.0% 42 34.7% 37 704.7 1193.4
Other indexes 5,848 1.6% 2,703 46.2% 1 22.0 296.0
* 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 19,563 5.8% 5,956 30.4% 3 72.0 563.7
Single 314,894 94.1% 92,394 29.3% 5 107.2 1257.4
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 124 5.7% 31 25.0% 9 122.2 776.6
CORPORATE AUTH 27 1.2% 4 14.8% 18 94.4 208.0
EXACT CA 3 0.1% 1 33.3% 57 57.0 0.0
SUBJECT 1,874 86.5% 415 22.1% 33 181.0 1180.9
EXACT SUBJECT 118 5.4% 17 14.4% 45 136.0 233.8
UNIFORM TITLE 2 0.1% 1 50.0% 14 14.0 0.0
SERIES 18 0.8% 5 27.8% 36 76.6 90.5
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 2,207 100% 489 22.2% 31 170.9 1105.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.6%
BRIEF 70.7%
LONG 10.3%
MARC 4.2%
FIELDS 2.6%
TAG 1.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.3%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 9.2%
Ten most frequent errors:
1. First word of command is invalid 29.1%
2. NS command - no next screen 27.5%
3. FIND command with invalid index name 12.8%
4. DISPLAY command contains invalid word 3.3%
5. KW search in database w/o KW index 2.8%
6. Search term missing from search command 2.4%
7. PS command - no previous screen 1.8%
8. Valid command at an inappropriate time 1.7%
9. DISPLAY command - no FIND results 1.4%
10. Index invalid in current database 1.3%
11. All others 15.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.4%
2. FIND 14.0%
3. INDEXES 7.3%
4. COMMAND WORDS 6.0%
5. Unrecognized term 5.2%
6. PASSWORDS 3.8%
7. DATABASES 2.9%
8. DISPLAY 2.6%
9. LOCATE (PE DB) 1.9%
10. CATALOG 1.9%
11. All others 30.0%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 21.8%
2. First word of command is invalid 14.8%
3. FIND command with invalid index name 11.6%
4. DISPLAY command - middle of >1 screen 4.2%
5. NS command - no next screen 2.9%
6. DISPLAY command-first of >1 screen 2.6%
7. FIND command retrieves >1 book 2.5%
8. DISPLAY command-complete in one screen 2.2%
9. F/BR with index invalid in current DB 2.2%
10. KW search in database w/o KW index 2.2%
11. All others 33.0%
Ten most frequent SHOW requests:
1. HISTORY 29.3%
2. SEARCH 13.5%
3. TIME 10.3%
4. GLOSSARY 8.2%
5. SETTINGS 4.5%
6. MAIL STATUS 3.6%
7. SYSTEM3 NEWS 3.1%
8. NEWS 2.6%
9. SYSTEM NEWS 2.1%
10. SYSTEM4 NEWS 1.5%
11. All others 21.4%