MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 03/01/00 through 03/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,299 14,253 21,552
Davis 13,061 2,028 15,089
Irvine 5,452 0 5,452
Los Angeles 1,795 5,461 7,256
Riverside 4,608 833 5,441
San Diego 2,584 1,360 3,944
San Francisco 1,966 0 1,966
Santa Barbara 3,414 2,060 5,474
Santa Cruz 3,427 1,538 4,965
LBL 0 618 618
LLL 0 485 485
Other - UC 332 1,316 1,648
CSL 0 840 840
CSU n/a 1,237 1,237
Other-Non UC n/a 26,561 26,561
_______ ______ _____
43,938 58,590 102,528
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,695 7,697 51,814
2-4 a.m. 1,372 5,982 49,965
4-6 a.m. 1,288 4,455 39,814
6-8 a.m. 2,912 10,059 77,572
8-10 a.m. 11,479 41,726 318,617
10-12 a.m. 18,682 67,151 461,063
12-2 p.m. 18,298 64,740 491,573
2-4 p.m. 21,272 76,280 565,811
4-6 p.m. 14,118 48,766 372,393
6-8 p.m. 5,161 21,611 168,786
8-10 p.m. 3,569 13,541 95,920
10-12 p.m. 2,682 11,404 78,567
__________ __________ __________ _________________
Total: 102,528 373,412 2,771,895
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 20,142 43,633 63,775
Davis 44,591 8,967 53,558
Irvine 16,582 0 16,582
Los Angeles 5,765 15,456 21,221
Riverside 14,796 2,402 17,198
San Diego 7,307 2,682 9,989
San Francisco 4,100 0 4,100
Santa Barbara 19,106 5,542 24,648
Santa Cruz 19,732 5,410 25,142
LBL 0 1,198 1,198
LLL 0 1,090 1,090
Other - UC 231 12,678 12,909
CSL 0 1,896 1,896
CSU n/a 5,237 5,237
Other-Non UC n/a 114,869 114,869
_______ ______ _____
152,352 221,060 373,412
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 162,622 369,455 532,077
Davis 314,569 46,647 361,216
Irvine 120,551 0 120,551
Los Angeles 38,744 143,091 181,835
Riverside 75,846 28,507 104,353
San Diego 49,390 26,509 75,899
San Francisco 27,936 0 27,936
Santa Barbara 131,788 50,711 182,499
Santa Cruz 77,878 34,982 112,860
LBL 0 14,467 14,467
LLL 0 7,074 7,074
Other - UC 1,843 43,992 45,835
CSL 0 9,031 9,031
CSU n/a 45,742 45,742
Other-Non UC n/a 950,520 950,520
_______ ______ _____
1,001,167 1,770,728 2,771,895
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 3.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.7
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 866:06
Average number of searches completed per session 3.6
Retrievals per search - median 2.0
Retrievals per search - average 78.7
Retrievals per search - standard deviation 1203.3
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 56.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 357,895 36.7%
DISPLAY (excluding automatic displays) 304,831 31.3%
ACFIND 104 0.0%
BROWSE 2,740 0.3%
SELECT 1,855 0.2%
HELP 11,129 1.1%
EXPLAIN 10,443 1.1%
SET/RESET 20,926 2.1%
SHOW 2,843 0.3%
AT 19,920 2.0%
ADD ON (AND, OR, AND NOT) 15,288 1.6%
LOGON or LOGOFF 169,247 17.3%
COMMENT 12 0.0%
SAVE 6,791 0.7%
USE 7,375 0.8%
OTHER 44,015 4.5%
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 52,242 14.1% 12,496 23.9% 12 96.5 420.0
AUTHOR 17,196 4.6% 4,315 25.1% 14 117.5 436.9
CORPORATE AUTH 3,418 0.9% 1,360 39.8% 24 607.6 3147.1
EXACT CA 115 0.0% 51 44.3% 69 626.2 1243.2
TITLE WORD 90,471 24.4% 26,931 29.8% 4 47.2 419.8
EXACT TITLE 53,084 14.3% 14,357 27.0% 2 27.9 233.1
TITLE -> TW 10,046 2.7% 2,527 25.2% 9 59.5 301.0
TITLE -> XT 12,515 3.4% 5,050 40.4% 1 8.7 70.8
SUBJECT 26,459 7.1% 10,405 39.3% 49 458.3 2990.1
EXACT SUBJECT 1,327 0.4% 434 32.7% 58 544.9 3654.3
PERIODICAL 63,349 17.1% 13,386 21.1% 5 130.9 1841.4
EXACT PE 19,510 5.3% 3,139 16.1% 3 33.1 413.7
RPE 27 0.0% 10 37.0% 7 47.9 115.6
XRP 4 0.0% 1 25.0% 19 27.3 31.3
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 726 0.2% 153 21.1% 43 1186.5 11876.4
DATE 5,136 1.4% 1,205 23.5% 3 107.0 1495.5
FORM 3,591 1.0% 867 24.1% 12 211.2 2516.6
NUMBER* 542 0.1% 157 29.0% 2 850.9 8183.1
MUSIC* 68 0.0% 49 72.1% 3 10.7 17.2
SERIES 6,313 1.7% 2,118 33.5% 4 92.6 689.5
UNIFORM TITLE 86 0.0% 36 41.9% 27 861.3 1339.8
Other indexes 4,326 1.2% 2,001 46.3% 1 45.7 738.1
* 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 18,236 5.2% 5,235 28.7% 4 71.7 484.8
Single 332,868 94.8% 90,282 27.1% 5 110.4 1443.4
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 341 13.2% 64 18.8% 3 51.7 367.6
CORPORATE AUTH 25 1.0% 5 20.0% 10 57.7 124.3
EXACT CA 4 0.2% 1 25.0% 8 57.0 90.1
SUBJECT 1,903 73.7% 366 19.2% 31 170.3 827.1
EXACT SUBJECT 276 10.7% 55 19.9% 31 209.4 1390.0
UNIFORM TITLE 6 0.2% 4 66.7% 2 1.5 0.7
SERIES 27 1.0% 2 7.4% 4 20.2 40.2
By number of indexes:
Multiple 2 0.1% 0 0.0% 11,063 11062.5 13440.0
Single 2,617 99.9% 499 19.1% 21 132.4 567.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.0%
BRIEF 71.6%
LONG 9.7%
MARC 4.3%
FIELDS 2.5%
TAG 1.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.5%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. First word of command is invalid 28.1%
2. NS command - no next screen 27.4%
3. FIND command with invalid index name 12.6%
4. DISPLAY command contains invalid word 3.5%
5. KW search in database w/o KW index 3.0%
6. Search term missing from search command 2.8%
7. PS command - no previous screen 2.0%
8. DISPLAY command - no FIND results 1.7%
9. Valid command at an inappropriate time 1.6%
10. Index invalid in current database 1.3%
11. All others 16.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.5%
2. FIND 13.8%
3. INDEXES 6.8%
4. COMMAND WORDS 6.2%
5. Unrecognized term 5.4%
6. PASSWORDS 3.6%
7. DISPLAY 2.5%
8. DATABASES 2.4%
9. LOCATE (PE DB) 2.1%
10. CATALOG 1.7%
11. All others 28.9%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 21.4%
2. First word of command is invalid 14.9%
3. FIND command with invalid index name 11.8%
4. DISPLAY command - middle of >1 screen 4.2%
5. NS command - no next screen 3.0%
6. FIND command retrieves >1 book 2.9%
7. DISPLAY command-first of >1 screen 2.7%
8. KW search in database w/o KW index 2.5%
9. F/BR with index invalid in current DB 2.2%
10. DISPLAY command-complete in one screen 2.2%
11. All others 32.1%
Ten most frequent SHOW requests:
1. HISTORY 32.6%
2. SEARCH 15.9%
3. GLOSSARY 8.6%
4. SYSTEM NEWS 6.4%
5. TIME 5.5%
6. SYSTEMS INFORMATION 5.2%
7. SETTINGS 4.1%
8. MAIL STATUS 2.2%
9. DATABASE NEWS 1.5%
10. LIBRARY NEWS 1.3%
11. All others 16.6%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)