MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 03/01/02 through 03/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,575 8,738 11,313
Davis 5,796 695 6,491
Irvine 1,426 0 1,426
Los Angeles 41 1,701 1,742
Riverside 1,620 324 1,944
San Diego 1,304 607 1,911
San Francisco 634 0 634
Santa Barbara 1,048 454 1,502
Santa Cruz 788 766 1,554
LBL 0 284 284
LLL 0 186 186
Other - UC 100 849 949
CSL 0 601 601
CSU n/a 583 583
Other-Non UC n/a 15,059 15,059
_______ ______ _____
15,332 30,847 46,179
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 949 3,382 35,080
2-4 a.m. 804 2,926 33,633
4-6 a.m. 772 2,542 20,755
6-8 a.m. 1,661 5,091 38,067
8-10 a.m. 5,941 22,339 165,475
10-12 a.m. 8,520 32,646 234,509
12-2 p.m. 8,178 30,782 247,312
2-4 p.m. 9,042 34,897 259,567
4-6 p.m. 5,688 23,605 188,942
6-8 p.m. 2,114 8,018 64,562
8-10 p.m. 1,294 4,763 37,435
10-12 p.m. 1,216 3,895 38,055
__________ __________ __________ _________________
Total: 46,179 174,886 1,363,392
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,234 28,178 35,412
Davis 23,374 4,001 27,375
Irvine 6,460 0 6,460
Los Angeles 208 4,242 4,450
Riverside 9,940 994 10,934
San Diego 4,951 1,320 6,271
San Francisco 1,697 0 1,697
Santa Barbara 4,374 870 5,244
Santa Cruz 5,225 2,807 8,032
LBL 0 286 286
LLL 0 511 511
Other - UC 106 2,438 2,544
CSL 0 1,016 1,016
CSU n/a 2,544 2,544
Other-Non UC n/a 62,110 62,110
_______ ______ _____
63,569 111,317 174,886
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 60,237 229,257 289,494
Davis 161,509 20,050 181,559
Irvine 47,523 0 47,523
Los Angeles 2,847 35,499 38,346
Riverside 51,456 10,038 61,494
San Diego 34,774 16,164 50,938
San Francisco 14,386 0 14,386
Santa Barbara 42,579 6,836 49,415
Santa Cruz 30,058 22,984 53,042
LBL 0 2,988 2,988
LLL 0 3,504 3,504
Other - UC 907 30,911 31,818
CSL 0 7,430 7,430
CSU n/a 28,331 28,331
Other-Non UC n/a 503,124 503,124
_______ ______ _____
446,276 917,116 1,363,392
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 4.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 1.6
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1210
Average number of searches completed per session 3.7
Retrievals per search - median 2.0
Retrievals per search - average 69.2
Retrievals per search - standard deviation 1545.6
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 66.4%
Commands entered, by type, excluding errors:
Total Percentage
FIND 168,629 36.1%
DISPLAY (excluding automatic displays) 157,664 33.8%
ACFIND 34 0.0%
BROWSE 1,070 0.2%
SELECT 747 0.2%
HELP 2,711 0.6%
EXPLAIN 2,773 0.6%
SET/RESET 9,087 1.9%
SHOW 860 0.2%
AT 11,605 2.5%
ADD ON (AND, OR, AND NOT) 6,156 1.3%
LOGON or LOGOFF 80,641 17.3%
COMMENT 4 0.0%
SAVE 3,418 0.7%
USE 2,890 0.6%
OTHER 18,425 3.9%
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 25,418 14.4% 5,756 22.6% 10 90.3 812.6
AUTHOR 6,089 3.4% 1,517 24.9% 11 104.5 502.0
CORPORATE AUTH 1,730 1.0% 591 34.2% 20 399.1 1469.3
EXACT CA 74 0.0% 26 35.1% 4 221.3 1246.6
TITLE WORD 37,416 21.1% 11,608 31.0% 4 48.7 899.9
EXACT TITLE 28,247 16.0% 8,519 30.2% 2 18.0 148.0
TITLE -> TW 4,119 2.3% 1,014 24.6% 8 126.0 2335.2
TITLE -> XT 4,527 2.6% 2,030 44.8% 2 9.7 88.4
SUBJECT 7,792 4.4% 2,630 33.8% 48 588.0 5016.8
EXACT SUBJECT 503 0.3% 120 23.9% 56 428.4 1437.5
PERIODICAL 34,577 19.5% 6,931 20.0% 5 81.6 1150.2
EXACT PE 12,752 7.2% 1,868 14.6% 2 27.1 398.2
RPE 7 0.0% 1 14.3% 8 7.7 5.1
XRP 2 0.0% 0 0.0% 7 7.0 4.2
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 648 0.4% 86 13.3% 17 1467.5 17918.0
DATE 2,046 1.2% 430 21.0% 4 76.4 438.0
FORM 2,476 1.4% 538 21.7% 10 317.7 4368.4
NUMBER* 115 0.1% 45 39.1% 2 86.2 376.7
MUSIC* 77 0.0% 23 29.9% 52 373.6 515.3
SERIES 4,147 2.3% 1,379 33.3% 3 82.9 740.2
UNIFORM TITLE 28 0.0% 9 32.1% 25 773.1 1452.9
Other indexes 4,299 2.4% 2,010 46.8% 1 32.2 425.2
* 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 9,522 5.7% 2,436 25.6% 3 117.9 2278.7
Single 157,206 94.3% 42,104 26.8% 4 92.6 1798.8
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 80 8.4% 19 23.7% 5 47.7 110.2
CORPORATE AUTH 6 0.6% 1 16.7% 2 121.8 260.7
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 808 84.9% 163 20.2% 40 354.4 3989.3
EXACT SUBJECT 51 5.4% 7 13.7% 59 342.9 1033.9
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 7 0.7% 2 28.6% 8 33.0 52.2
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,033 100% 205 19.8% 31 300.4 3530.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.6%
BRIEF 66.2%
LONG 9.4%
MARC 4.7%
FIELDS 4.1%
TAG 2.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.1%
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 33.6%
2. First word of command is invalid 25.0%
3. FIND command with invalid index name 12.8%
4. DISPLAY command contains invalid word 4.5%
5. Search term missing from search command 2.6%
6. PS command - no previous screen 2.1%
7. DISPLAY command - no FIND results 1.6%
8. Valid command at an inappropriate time 1.5%
9. KW search in database w/o KW index 1.3%
10. Command contains escape or arrow key 1.1%
11. All others 13.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.0%
2. FIND 13.3%
3. Unrecognized term 6.5%
4. INDEXES 5.7%
5. COMMAND WORDS 5.6%
6. PASSWORDS 3.8%
7. DISPLAY 2.6%
8. DATABASES 2.0%
9. ADD-ON SEARCH 1.9%
10. LOCATE (PE DB) 1.9%
11. All others 29.8%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.7%
2. First word of command is invalid 13.6%
3. FIND command with invalid index name 12.4%
4. DISPLAY command - middle of >1 screen 3.7%
5. DISPLAY command-first of >1 screen 3.3%
6. NS command - no next screen 3.1%
7. FIND command retrieves >1 book 2.8%
8. TW search with zero results 2.2%
9. DISPLAY command-complete in one screen 2.0%
10. DISPLAY command - last of >1 screen 2.0%
11. All others 32.3%
Ten most frequent SHOW requests:
1. HISTORY 55.6%
2. SEARCH 8.8%
3. GLOSSARY 6.7%
4. SETTINGS 5.7%
5. PSYCINFO NEWS 3.6%
6. TIME 1.9%
7. DATABASE NEWS 1.6%
8. MAIL STATUS 1.6%
9. TERMINAL 1.5%
10. LAUC NEWS 1.4%
11. All others 11.6%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)