MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 01/01/02 through 01/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,161 8,227 10,388
Davis 6,586 767 7,353
Irvine 1,724 0 1,724
Los Angeles 45 1,841 1,886
Riverside 1,561 362 1,923
San Diego 1,493 688 2,181
San Francisco 698 0 698
Santa Barbara 1,068 496 1,564
Santa Cruz 720 738 1,458
LBL 0 397 397
LLL 0 270 270
Other - UC 228 724 952
CSL 0 615 615
CSU n/a 446 446
Other-Non UC n/a 16,988 16,988
_______ ______ _____
16,284 32,559 48,843
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,050 3,006 28,586
2-4 a.m. 777 2,045 21,799
4-6 a.m. 736 2,021 17,144
6-8 a.m. 1,676 4,245 37,924
8-10 a.m. 6,271 20,492 174,555
10-12 a.m. 9,506 34,368 258,363
12-2 p.m. 8,512 29,911 216,478
2-4 p.m. 9,791 33,149 248,339
4-6 p.m. 5,951 21,422 168,095
6-8 p.m. 2,043 7,564 61,197
8-10 p.m. 1,260 4,422 39,728
10-12 p.m. 1,270 3,751 30,702
__________ __________ __________ _________________
Total: 48,843 166,396 1,302,910
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,399 24,452 29,851
Davis 24,949 4,398 29,347
Irvine 9,159 0 9,159
Los Angeles 283 3,775 4,058
Riverside 6,297 1,033 7,330
San Diego 4,298 1,384 5,682
San Francisco 1,752 0 1,752
Santa Barbara 4,887 1,304 6,191
Santa Cruz 5,459 2,444 7,903
LBL 0 503 503
LLL 0 773 773
Other - UC 113 2,344 2,457
CSL 0 699 699
CSU n/a 1,698 1,698
Other-Non UC n/a 58,993 58,993
_______ ______ _____
62,596 103,800 166,396
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 45,688 213,366 259,054
Davis 156,747 27,290 184,037
Irvine 59,674 0 59,674
Los Angeles 3,130 31,463 34,593
Riverside 51,109 11,426 62,535
San Diego 27,365 10,158 37,523
San Francisco 14,619 0 14,619
Santa Barbara 47,230 12,355 59,585
Santa Cruz 21,197 18,598 39,795
LBL 0 4,284 4,284
LLL 0 8,282 8,282
Other - UC 946 19,340 20,286
CSL 0 6,145 6,145
CSU n/a 16,826 16,826
Other-Non UC n/a 495,672 495,672
_______ ______ _____
427,705 875,205 1,302,910
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 2.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 1.1
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1060
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 64.9
Retrievals per search - standard deviation 1398.9
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 3.5%
Percent of long searches completed
(includes partial results) 64.0%
Commands entered, by type, excluding errors:
Total Percentage
FIND 160,601 35.0%
DISPLAY (excluding automatic displays) 154,190 33.6%
ACFIND 14 0.0%
BROWSE 935 0.2%
SELECT 543 0.1%
HELP 2,749 0.6%
EXPLAIN 2,969 0.6%
SET/RESET 9,301 2.0%
SHOW 913 0.2%
AT 11,015 2.4%
ADD ON (AND, OR, AND NOT) 5,761 1.3%
LOGON or LOGOFF 84,387 18.4%
COMMENT 5 0.0%
SAVE 2,937 0.6%
USE 3,422 0.7%
OTHER 19,402 4.2%
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 25,049 14.9% 5,883 23.5% 10 79.3 357.7
AUTHOR 6,084 3.6% 1,444 23.7% 11 112.4 478.1
CORPORATE AUTH 1,915 1.1% 700 36.6% 18 610.8 5609.2
EXACT CA 29 0.0% 15 51.7% 7 270.9 663.2
TITLE WORD 38,643 23.0% 12,475 32.3% 4 49.6 1150.4
EXACT TITLE 24,463 14.6% 7,339 30.0% 2 25.8 160.5
TITLE -> TW 3,954 2.4% 998 25.2% 8 65.3 443.5
TITLE -> XT 4,396 2.6% 1,948 44.3% 1 10.6 106.0
SUBJECT 6,426 3.8% 2,055 32.0% 44 539.6 6326.6
EXACT SUBJECT 398 0.2% 82 20.6% 38 495.8 1883.1
PERIODICAL 31,845 19.0% 6,476 20.3% 5 86.2 1294.5
EXACT PE 12,091 7.2% 1,708 14.1% 3 46.2 1161.4
RPE 13 0.0% 2 15.4% 3 5.8 6.1
XRP 13 0.0% 2 15.4% 3 2.8 1.4
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 248 0.1% 30 12.1% 55 308.3 839.2
DATE 1,922 1.1% 406 21.1% 5 77.0 791.0
FORM 1,871 1.1% 387 20.7% 12 256.0 3137.9
NUMBER* 118 0.1% 58 49.2% 4 1354.4 4868.4
MUSIC* 35 0.0% 21 60.0% 49 622.1 1225.6
SERIES 4,232 2.5% 1,350 31.9% 4 156.2 3391.3
UNIFORM TITLE 45 0.0% 13 28.9% 35 608.7 1246.2
Other indexes 4,067 2.4% 1,775 43.6% 1 22.5 375.0
* 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 8,735 5.5% 2,260 25.9% 4 104.4 2536.9
Single 149,809 94.5% 40,523 27.0% 4 88.7 1596.9
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 64 7.5% 12 18.8% 6 73.0 181.5
CORPORATE AUTH 13 1.5% 3 23.1% 38 106.4 144.3
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 720 84.7% 155 21.5% 48 257.4 1580.6
EXACT SUBJECT 48 5.6% 6 12.5% 31 74.1 101.9
UNIFORM TITLE 1 0.1% 0 0.0% 33 33.0 0.0
SERIES 4 0.5% 0 0.0% 59 65.5 61.8
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 894 100% 179 20.0% 31 216.2 1408.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.4%
BRIEF 65.1%
LONG 10.3%
MARC 4.7%
FIELDS 3.0%
TAG 2.7%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.8%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.7%
Ten most frequent errors:
1. NS command - no next screen 33.5%
2. First word of command is invalid 24.4%
3. FIND command with invalid index name 11.0%
4. DISPLAY command contains invalid word 4.0%
5. Search term missing from search command 2.4%
6. PS command - no previous screen 1.9%
7. KW search in database w/o KW index 1.9%
8. 1281 1.8%
9. DISPLAY command - no FIND results 1.8%
10. Valid command at an inappropriate time 1.5%
11. All others 15.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.3%
2. FIND 11.0%
3. Unrecognized term 6.3%
4. INDEXES 5.7%
5. COMMAND WORDS 5.6%
6. PASSWORDS 3.7%
7. 3190 3.7%
8. DATABASES 3.0%
9. DISPLAY 2.4%
10. G961 2.0%
11. All others 33.4%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 26.1%
2. First word of command is invalid 12.4%
3. FIND command with invalid index name 10.5%
4. DISPLAY command - middle of >1 screen 3.2%
5. DISPLAY command-first of >1 screen 3.0%
6. 1281 2.8%
7. DISPLAY command-complete in one screen 2.2%
8. F/BR with index invalid in current DB 2.1%
9. KW search in database w/o KW index 2.1%
10. NS command - no next screen 2.0%
11. All others 33.6%
Ten most frequent SHOW requests:
1. HISTORY 52.8%
2. DATABASE NEWS 6.4%
3. SEARCH 5.7%
4. GLOSSARY 5.6%
5. SETTINGS 4.3%
6. TIME 1.7%
7. PE LOADING STATISTICS 1.7%
8. 5101 1.4%
9. MAIL STATUS 1.4%
10. SYSTEM NEWS 1.3%
11. All others 17.8%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)