MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 05/01/00 through 05/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,671 9,061 12,732
Davis 10,058 1,504 11,562
Irvine 4,521 0 4,521
Los Angeles 1,074 3,860 4,934
Riverside 3,302 602 3,904
San Diego 2,055 1,062 3,117
San Francisco 1,528 0 1,528
Santa Barbara 2,739 1,646 4,385
Santa Cruz 2,984 1,361 4,345
LBL 0 418 418
LLL 0 363 363
Other - UC 148 816 964
CSL 0 594 594
CSU n/a 566 566
Other-Non UC n/a 19,128 19,128
_______ ______ _____
32,080 40,981 73,061
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,304 5,372 37,017
2-4 a.m. 918 3,996 31,601
4-6 a.m. 869 3,700 27,776
6-8 a.m. 1,950 7,176 54,259
8-10 a.m. 7,978 28,879 218,845
10-12 a.m. 13,171 43,826 330,834
12-2 p.m. 12,969 41,940 314,932
2-4 p.m. 15,018 49,635 359,898
4-6 p.m. 9,873 32,255 249,127
6-8 p.m. 4,117 16,994 135,951
8-10 p.m. 2,898 8,612 64,929
10-12 p.m. 1,996 6,000 50,397
__________ __________ __________ _________________
Total: 73,061 248,385 1,875,566
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 9,944 27,427 37,371
Davis 33,229 5,633 38,862
Irvine 13,582 0 13,582
Los Angeles 3,131 11,121 14,252
Riverside 12,184 1,355 13,539
San Diego 5,527 1,842 7,369
San Francisco 2,929 0 2,929
Santa Barbara 9,381 3,852 13,233
Santa Cruz 10,907 4,924 15,831
LBL 0 731 731
LLL 0 1,019 1,019
Other - UC 170 4,377 4,547
CSL 0 1,320 1,320
CSU n/a 2,145 2,145
Other-Non UC n/a 81,655 81,655
_______ ______ _____
100,984 147,401 248,385
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 77,810 215,914 293,724
Davis 249,312 28,484 277,796
Irvine 96,174 0 96,174
Los Angeles 20,801 99,747 120,548
Riverside 82,945 17,740 100,685
San Diego 40,190 24,255 64,445
San Francisco 20,215 0 20,215
Santa Barbara 77,161 40,134 117,295
Santa Cruz 53,128 26,707 79,835
LBL 0 6,062 6,062
LLL 0 7,295 7,295
Other - UC 1,668 20,433 22,101
CSL 0 10,159 10,159
CSU n/a 19,276 19,276
Other-Non UC n/a 639,956 639,956
_______ ______ _____
719,404 1,156,162 1,875,566
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 5.3
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) 1108
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 75.7
Retrievals per search - standard deviation 1406.6
Percent of searches completed with 0 results 27.3%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 57.4%
Commands entered, by type, excluding errors:
Total Percentage
FIND 239,511 36.1%
DISPLAY (excluding automatic displays) 207,805 31.3%
ACFIND 85 0.0%
BROWSE 1,266 0.2%
SELECT 1,092 0.2%
HELP 6,802 1.0%
EXPLAIN 6,473 1.0%
SET/RESET 15,382 2.3%
SHOW 1,380 0.2%
AT 13,246 2.0%
ADD ON (AND, OR, AND NOT) 8,697 1.3%
LOGON or LOGOFF 120,311 18.1%
COMMENT 7 0.0%
SAVE 4,691 0.7%
USE 5,386 0.8%
OTHER 30,990 4.7%
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 36,724 14.7% 8,545 23.3% 11 114.6 2636.0
AUTHOR 12,747 5.1% 3,144 24.7% 14 117.4 397.2
CORPORATE AUTH 2,219 0.9% 823 37.1% 22 507.0 3367.6
EXACT CA 66 0.0% 21 31.8% 44 611.6 1282.7
TITLE WORD 60,576 24.3% 18,644 30.8% 4 45.6 327.3
EXACT TITLE 36,218 14.5% 10,207 28.2% 2 24.8 246.9
TITLE -> TW 5,338 2.1% 1,426 26.7% 9 67.0 498.8
TITLE -> XT 6,458 2.6% 2,968 46.0% 1 13.9 132.3
SUBJECT 17,652 7.1% 7,079 40.1% 51 489.4 3270.5
EXACT SUBJECT 1,034 0.4% 336 32.5% 65 587.2 2572.9
PERIODICAL 42,490 17.0% 8,744 20.6% 5 96.7 1131.9
EXACT PE 12,859 5.2% 1,960 15.2% 3 24.8 271.0
RPE 15 0.0% 1 6.7% 7 22.4 29.0
XRP 4 0.0% 1 25.0% 7 6.0 4.6
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 454 0.2% 99 21.8% 69 405.8 1697.7
DATE 3,768 1.5% 868 23.0% 4 109.2 1452.7
FORM 2,153 0.9% 524 24.3% 19 365.3 6187.8
NUMBER* 354 0.1% 108 30.5% 2 53.5 301.3
MUSIC* 50 0.0% 32 64.0% 9 149.7 491.3
SERIES 4,453 1.8% 1,492 33.5% 4 77.1 539.7
UNIFORM TITLE 90 0.0% 32 35.6% 66 155.5 426.1
Other indexes 3,526 1.4% 1,588 45.0% 1 41.8 725.8
* 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 13,427 5.7% 3,775 28.1% 4 68.0 719.1
Single 221,712 94.3% 60,931 27.5% 5 106.6 1665.5
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 175 14.9% 27 15.4% 6 58.2 143.5
CORPORATE AUTH 8 0.7% 2 25.0% 6 30.5 42.2
EXACT CA 1 0.1% 0 0.0% 17 17.0 0.0
SUBJECT 834 71.2% 183 21.9% 54 421.6 4060.4
EXACT SUBJECT 137 11.7% 23 16.8% 23 81.1 143.5
UNIFORM TITLE 2 0.2% 1 50.0% 1 1.0 0.0
SERIES 14 1.2% 4 28.6% 5 48.5 71.5
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,211 100% 246 20.3% 29 304.7 3339.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.8%
BRIEF 70.4%
LONG 10.0%
MARC 3.3%
FIELDS 2.6%
TAG 1.9%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.0%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.4%
Ten most frequent errors:
1. NS command - no next screen 29.3%
2. First word of command is invalid 26.8%
3. FIND command with invalid index name 12.7%
4. DISPLAY command contains invalid word 3.8%
5. KW search in database w/o KW index 3.2%
6. Search term missing from search command 2.6%
7. PS command - no previous screen 2.0%
8. DISPLAY command - no FIND results 1.8%
9. Valid command at an inappropriate time 1.6%
10. Index invalid in current database 1.3%
11. All others 14.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 30.4%
2. FIND 13.2%
3. INDEXES 6.8%
4. COMMAND WORDS 5.8%
5. Unrecognized term 5.5%
6. PASSWORDS 3.4%
7. DATABASES 2.3%
8. DISPLAY 2.1%
9. CATALOG 1.9%
10. LOCATE (PE DB) 1.7%
11. All others 26.8%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.6%
2. First word of command is invalid 14.4%
3. FIND command with invalid index name 12.3%
4. DISPLAY command - middle of >1 screen 4.1%
5. FIND command retrieves >1 book 3.3%
6. DISPLAY command-first of >1 screen 3.0%
7. NS command - no next screen 2.8%
8. KW search in database w/o KW index 2.7%
9. DISPLAY command-complete in one screen 2.4%
10. F/BR with index invalid in current DB 2.2%
11. All others 30.2%
Ten most frequent SHOW requests:
1. HISTORY 41.4%
2. SEARCH 13.4%
3. GLOSSARY 12.3%
4. MAIL STATUS 4.4%
5. SETTINGS 4.2%
6. DATABASE NEWS 2.4%
7. SYSTEM NEWS 2.1%
8. DATABASES 1.5%
9. SYSTEMS INFORMATION 1.3%
10. MAIL SETTINGS 1.1%
11. All others 15.8%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)