MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 06/01/02 through 06/30/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,516 5,826 7,342
Davis 3,733 501 4,234
Irvine 995 0 995
Los Angeles 14 1,309 1,323
Riverside 1,222 215 1,437
San Diego 1,052 400 1,452
San Francisco 503 0 503
Santa Barbara 758 204 962
Santa Cruz 436 436 872
LBL 0 264 264
LLL 0 90 90
Other - UC 94 675 769
CSL 0 299 299
CSU n/a 408 408
Other-Non UC n/a 10,565 10,565
_______ ______ _____
10,323 21,192 31,515
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 578 2,018 18,280
2-4 a.m. 547 1,690 22,077
4-6 a.m. 466 1,328 10,652
6-8 a.m. 1,125 3,434 27,325
8-10 a.m. 4,188 15,570 106,777
10-12 a.m. 6,009 24,327 164,482
12-2 p.m. 5,586 23,001 164,441
2-4 p.m. 6,476 27,077 177,917
4-6 p.m. 3,800 15,144 107,739
6-8 p.m. 1,120 4,612 33,160
8-10 p.m. 738 2,612 21,248
10-12 p.m. 882 3,418 29,246
__________ __________ __________ _________________
Total: 31,515 124,231 883,344
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,000 20,262 24,262
Davis 13,916 2,747 16,663
Irvine 4,955 0 4,955
Los Angeles 26 3,138 3,164
Riverside 6,324 445 6,769
San Diego 3,078 851 3,929
San Francisco 1,647 0 1,647
Santa Barbara 2,980 376 3,356
Santa Cruz 7,291 1,383 8,674
LBL 0 329 329
LLL 0 207 207
Other - UC 123 3,667 3,790
CSL 0 500 500
CSU n/a 1,947 1,947
Other-Non UC n/a 44,039 44,039
_______ ______ _____
44,340 79,891 124,231
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 32,798 138,480 171,278
Davis 97,384 13,317 110,701
Irvine 36,160 0 36,160
Los Angeles 201 26,640 26,841
Riverside 33,964 6,259 40,223
San Diego 17,628 9,571 27,199
San Francisco 13,526 0 13,526
Santa Barbara 28,897 4,536 33,433
Santa Cruz 15,348 12,101 27,449
LBL 0 1,984 1,984
LLL 0 1,603 1,603
Other - UC 798 16,193 16,991
CSL 0 4,959 4,959
CSU n/a 18,143 18,143
Other-Non UC n/a 352,854 352,854
_______ ______ _____
276,704 606,640 883,344
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 1.4
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1113
Average number of searches completed per session 3.9
Retrievals per search - median 2.0
Retrievals per search - average 58.5
Retrievals per search - standard deviation 842.6
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 65.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 119,432 37.3%
DISPLAY (excluding automatic displays) 107,260 33.5%
ACFIND 37 0.0%
BROWSE 496 0.2%
SELECT 251 0.1%
HELP 1,529 0.5%
EXPLAIN 1,636 0.5%
SET/RESET 6,038 1.9%
SHOW 592 0.2%
AT 6,417 2.0%
ADD ON (AND, OR, AND NOT) 4,742 1.5%
LOGON or LOGOFF 55,555 17.3%
COMMENT 1 0.0%
SAVE 2,259 0.7%
USE 2,038 0.6%
OTHER 12,175 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 15,876 12.9% 3,715 23.4% 11 83.7 488.2
AUTHOR 4,124 3.3% 1,018 24.7% 11 125.3 803.1
CORPORATE AUTH 1,045 0.8% 344 32.9% 20 541.3 3986.0
EXACT CA 17 0.0% 6 35.3% 4 36.9 73.6
TITLE WORD 27,696 22.5% 9,040 32.6% 4 48.3 609.6
EXACT TITLE 20,499 16.6% 5,513 26.9% 2 22.2 214.5
TITLE -> TW 2,969 2.4% 769 25.9% 7 70.7 857.4
TITLE -> XT 4,057 3.3% 1,775 43.8% 1 8.3 62.4
SUBJECT 4,346 3.5% 1,439 33.1% 48 527.4 2891.0
EXACT SUBJECT 296 0.2% 66 22.3% 74 979.2 7714.6
PERIODICAL 25,388 20.6% 5,454 21.5% 4 68.0 868.7
EXACT PE 9,512 7.7% 1,367 14.4% 2 15.5 172.8
RPE 3 0.0% 2 66.7% 12 12.0 0.0
XRP 1 0.0% 0 0.0% 5 5.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 224 0.2% 45 20.1% 35 1688.3 5674.4
DATE 1,236 1.0% 256 20.7% 4 84.1 439.6
FORM 615 0.5% 133 21.6% 12 184.3 1330.5
NUMBER* 171 0.1% 80 46.8% 3 596.2 3397.2
MUSIC* 20 0.0% 10 50.0% 9 20.8 24.4
SERIES 2,741 2.2% 888 32.4% 3 64.0 449.8
UNIFORM TITLE 17 0.0% 5 29.4% 6 45.2 81.8
Other indexes 2,359 1.9% 1,019 43.2% 1 16.0 130.9
* 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 4,811 4.1% 1,233 25.6% 3 80.1 1060.4
Single 113,303 95.9% 30,385 26.8% 4 78.6 983.3
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 43 9.3% 9 20.9% 8 91.9 223.0
CORPORATE AUTH 2 0.4% 1 50.0% 136 136.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 357 77.4% 77 21.6% 34 151.3 347.1
EXACT SUBJECT 50 10.8% 5 10.0% 93 163.9 175.1
UNIFORM TITLE 1 0.2% 1 100% 0 0.0 0.0
SERIES 8 1.7% 1 12.5% 39 60.4 65.9
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 472 100% 95 20.1% 30 141.9 313.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.7%
BRIEF 67.8%
LONG 9.1%
MARC 4.3%
FIELDS 3.4%
TAG 2.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.4%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.3%
Ten most frequent errors:
1. NS command - no next screen 34.7%
2. First word of command is invalid 25.4%
3. FIND command with invalid index name 11.7%
4. DISPLAY command contains invalid word 4.7%
5. Search term missing from search command 2.6%
6. PS command - no previous screen 1.9%
7. DISPLAY command - no FIND results 1.6%
8. Valid command at an inappropriate time 1.3%
9. KW search in database w/o KW index 1.2%
10. Command contains escape or arrow key 1.1%
11. All others 13.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.0%
2. FIND 14.1%
3. INDEXES 8.1%
4. COMMAND WORDS 6.0%
5. Unrecognized term 5.1%
6. PASSWORDS 3.2%
7. DISPLAY 3.0%
8. CATALOG 2.3%
9. NRLF 2.0%
10. LOCATE (PE DB) 1.7%
11. All others 28.5%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.8%
2. First word of command is invalid 14.3%
3. FIND command with invalid index name 12.5%
4. DISPLAY command - middle of >1 screen 4.0%
5. DISPLAY command-first of >1 screen 3.1%
6. NS command - no next screen 2.6%
7. FIND command retrieves >1 book 2.5%
8. DISPLAY command-complete in one screen 2.2%
9. TW search with zero results 2.1%
10. DISPLAY command - last of >1 screen 1.8%
11. All others 30.1%
Ten most frequent SHOW requests:
1. HISTORY 52.8%
2. GLOSSARY 5.2%
3. SEARCH 5.2%
4. SETTINGS 4.7%
5. DATABASE NEWS 3.7%
6. MAIL STATUS 2.6%
7. SYSTEMS INFORMATION 2.3%
8. NEWS 2.1%
9. LAUC NEWS 1.2%
10. DATABASES 1.2%
11. All others 18.9%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)