MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 04/01/02 through 04/30/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,935 9,065 12,000
Davis 5,789 645 6,434
Irvine 1,763 0 1,763
Los Angeles 32 1,640 1,672
Riverside 1,808 328 2,136
San Diego 1,504 516 2,020
San Francisco 599 0 599
Santa Barbara 983 333 1,316
Santa Cruz 774 716 1,490
LBL 0 263 263
LLL 0 209 209
Other - UC 85 1,189 1,274
CSL 0 538 538
CSU n/a 523 523
Other-Non UC n/a 14,527 14,527
_______ ______ _____
16,272 30,492 46,764
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,022 3,011 23,536
2-4 a.m. 813 2,543 23,599
4-6 a.m. 701 2,000 16,844
6-8 a.m. 1,564 5,203 36,932
8-10 a.m. 5,838 23,154 163,755
10-12 a.m. 8,751 35,721 250,322
12-2 p.m. 8,262 34,600 248,886
2-4 p.m. 9,300 36,514 262,286
4-6 p.m. 5,775 23,851 171,101
6-8 p.m. 2,045 7,965 61,106
8-10 p.m. 1,378 5,296 38,771
10-12 p.m. 1,315 5,559 52,204
__________ __________ __________ _________________
Total: 46,764 185,417 1,349,342
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,485 29,650 37,135
Davis 25,067 4,971 30,038
Irvine 8,731 0 8,731
Los Angeles 102 3,844 3,946
Riverside 12,042 1,080 13,122
San Diego 4,610 1,446 6,056
San Francisco 1,773 0 1,773
Santa Barbara 4,658 644 5,302
Santa Cruz 7,090 4,324 11,414
LBL 0 245 245
LLL 0 416 416
Other - UC 86 2,869 2,955
CSL 0 730 730
CSU n/a 2,606 2,606
Other-Non UC n/a 60,948 60,948
_______ ______ _____
71,644 113,773 185,417
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 64,903 219,197 284,100
Davis 166,301 25,497 191,798
Irvine 59,367 0 59,367
Los Angeles 1,136 30,242 31,378
Riverside 59,831 9,040 68,871
San Diego 22,734 11,809 34,543
San Francisco 17,000 0 17,000
Santa Barbara 46,335 5,617 51,952
Santa Cruz 25,382 18,697 44,079
LBL 0 1,811 1,811
LLL 0 7,898 7,898
Other - UC 445 32,219 32,664
CSL 0 5,234 5,234
CSU n/a 27,140 27,140
Other-Non UC n/a 491,507 491,507
_______ ______ _____
463,434 885,908 1,349,342
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 2.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.8
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1210
Average number of searches completed per session 3.9
Retrievals per search - median 2.0
Retrievals per search - average 65.3
Retrievals per search - standard deviation 1253.7
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 66.7%
Commands entered, by type, excluding errors:
Total Percentage
FIND 178,072 36.8%
DISPLAY (excluding automatic displays) 163,303 33.7%
ACFIND 20 0.0%
BROWSE 1,065 0.2%
SELECT 766 0.2%
HELP 3,058 0.6%
EXPLAIN 2,789 0.6%
SET/RESET 9,450 2.0%
SHOW 904 0.2%
AT 12,196 2.5%
ADD ON (AND, OR, AND NOT) 7,267 1.5%
LOGON or LOGOFF 81,568 16.8%
COMMENT 2 0.0%
SAVE 2,887 0.6%
USE 2,704 0.6%
OTHER 18,204 3.8%
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 25,983 14.0% 6,028 23.2% 10 81.5 549.2
AUTHOR 6,154 3.3% 1,534 24.9% 11 104.1 605.4
CORPORATE AUTH 1,730 0.9% 630 36.4% 17 822.9 6532.8
EXACT CA 102 0.1% 15 14.7% 3 147.6 963.6
TITLE WORD 37,829 20.3% 12,245 32.4% 4 63.3 1344.2
EXACT TITLE 35,381 19.0% 9,371 26.5% 2 17.6 172.0
TITLE -> TW 4,465 2.4% 1,097 24.6% 8 63.3 456.7
TITLE -> XT 5,002 2.7% 2,274 45.5% 2 14.0 122.9
SUBJECT 8,109 4.4% 2,693 33.2% 47 546.1 3370.1
EXACT SUBJECT 503 0.3% 96 19.1% 97 508.5 1169.7
PERIODICAL 34,404 18.5% 7,799 22.7% 5 78.1 1027.6
EXACT PE 12,934 7.0% 2,081 16.1% 3 22.7 290.1
RPE 7 0.0% 2 28.6% 2 5.8 7.3
XRP 6 0.0% 1 16.7% 6 7.2 4.1
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 250 0.1% 38 15.2% 56 2001.1 18180.1
DATE 2,137 1.1% 503 23.5% 3 61.8 303.7
FORM 2,209 1.2% 562 25.4% 12 269.3 4029.2
NUMBER* 120 0.1% 56 46.7% 2 797.9 3909.6
MUSIC* 60 0.0% 39 65.0% 22 89.2 143.2
SERIES 4,030 2.2% 1,227 30.4% 5 78.2 498.5
UNIFORM TITLE 91 0.0% 40 44.0% 20 302.5 686.9
Other indexes 4,374 2.4% 1,832 41.9% 1 14.3 167.5
* 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 9,270 5.3% 2,558 27.6% 3 99.4 1548.2
Single 166,767 94.7% 44,915 26.9% 4 88.3 1467.9
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 38 3.9% 6 15.8% 9 158.4 609.3
CORPORATE AUTH 8 0.8% 5 62.5% 464 488.7 42.7
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 779 80.3% 160 20.5% 57 199.5 486.8
EXACT SUBJECT 139 14.3% 10 7.2% 31 120.3 168.5
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 6 0.6% 3 50.0% 39 30.7 24.6
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,011 100% 189 18.7% 43 177.9 446.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.5%
BRIEF 65.5%
LONG 8.7%
MARC 4.3%
FIELDS 4.6%
TAG 2.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.7%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.9%
Ten most frequent errors:
1. NS command - no next screen 34.0%
2. First word of command is invalid 25.9%
3. FIND command with invalid index name 12.6%
4. DISPLAY command contains invalid word 4.6%
5. Search term missing from search command 2.5%
6. PS command - no previous screen 2.1%
7. Valid command at an inappropriate time 1.6%
8. DISPLAY command - no FIND results 1.6%
9. KW search in database w/o KW index 1.1%
10. Command contains escape or arrow key 1.0%
11. All others 13.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 29.7%
2. FIND 11.8%
3. INDEXES 5.9%
4. COMMAND WORDS 5.8%
5. Unrecognized term 5.2%
6. PASSWORDS 4.4%
7. CATALOG 2.2%
8. DATABASES 2.1%
9. DISPLAY 2.0%
10. LOCATE (PE DB) 2.0%
11. All others 28.9%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.5%
2. First word of command is invalid 15.0%
3. FIND command with invalid index name 13.8%
4. DISPLAY command - middle of >1 screen 4.0%
5. DISPLAY command-first of >1 screen 2.9%
6. NS command - no next screen 2.4%
7. FIND command retrieves >1 book 2.1%
8. DISPLAY command-complete in one screen 2.1%
9. TW search with zero results 2.0%
10. F/BR with index invalid in current DB 1.9%
11. All others 30.2%
Ten most frequent SHOW requests:
1. HISTORY 49.4%
2. SEARCH 12.6%
3. GLOSSARY 9.6%
4. SETTINGS 7.9%
5. DATABASE NEWS 2.1%
6. NEWS 1.7%
7. PSYCINFO NEWS 1.4%
8. MAIL STATUS 1.4%
9. STATISTICS 0.9%
10. SYSTEMS INFORMATION 0.8%
11. All others 12.3%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)