MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 01/01/01 through 01/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,542 11,012 14,554
Davis 9,257 1,426 10,683
Irvine 3,630 0 3,630
Los Angeles 551 2,567 3,118
Riverside 2,847 569 3,416
San Diego 2,163 954 3,117
San Francisco 1,542 0 1,542
Santa Barbara 2,002 1,319 3,321
Santa Cruz 1,595 979 2,574
LBL 0 396 396
LLL 0 320 320
Other - UC 223 969 1,192
CSL 0 618 618
CSU n/a 597 597
Other-Non UC n/a 18,931 18,931
_______ ______ _____
27,352 40,657 68,009
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,008 3,364 26,249
2-4 a.m. 714 2,943 26,051
4-6 a.m. 699 2,686 21,569
6-8 a.m. 1,747 5,972 47,489
8-10 a.m. 8,122 26,175 205,435
10-12 a.m. 12,948 43,645 324,347
12-2 p.m. 12,656 41,626 315,964
2-4 p.m. 14,312 47,620 356,619
4-6 p.m. 9,336 31,016 255,400
6-8 p.m. 3,054 10,899 78,237
8-10 p.m. 1,890 6,270 51,286
10-12 p.m. 1,523 5,549 44,342
__________ __________ __________ _________________
Total: 68,009 227,765 1,752,988
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 9,955 31,841 41,796
Davis 34,433 5,727 40,160
Irvine 12,966 0 12,966
Los Angeles 1,457 6,364 7,821
Riverside 9,585 1,905 11,490
San Diego 6,621 1,726 8,347
San Francisco 2,758 0 2,758
Santa Barbara 6,528 3,062 9,590
Santa Cruz 7,690 3,401 11,091
LBL 0 529 529
LLL 0 1,104 1,104
Other - UC 202 6,230 6,432
CSL 0 1,139 1,139
CSU n/a 2,683 2,683
Other-Non UC n/a 69,859 69,859
_______ ______ _____
92,195 135,570 227,765
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 83,462 268,600 352,062
Davis 232,330 31,607 263,937
Irvine 88,884 0 88,884
Los Angeles 11,591 56,565 68,156
Riverside 64,484 16,036 80,520
San Diego 36,636 14,432 51,068
San Francisco 17,817 0 17,817
Santa Barbara 50,116 25,899 76,015
Santa Cruz 43,058 20,091 63,149
LBL 0 4,949 4,949
LLL 0 16,632 16,632
Other - UC 1,929 30,927 32,856
CSL 0 7,728 7,728
CSU n/a 33,139 33,139
Other-Non UC n/a 596,076 596,076
_______ ______ _____
630,307 1,122,681 1,752,988
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 2.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.6
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1225
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 65.9
Retrievals per search - standard deviation 1018.6
Percent of searches completed with 0 results 26.1%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 63.0%
Commands entered, by type, excluding errors:
Total Percentage
FIND 219,226 35.1%
DISPLAY (excluding automatic displays) 206,077 33.0%
ACFIND 47 0.0%
BROWSE 1,301 0.2%
SELECT 1,100 0.2%
HELP 4,908 0.8%
EXPLAIN 5,078 0.8%
SET/RESET 16,795 2.7%
SHOW 1,702 0.3%
AT 13,308 2.1%
ADD ON (AND, OR, AND NOT) 8,344 1.3%
LOGON or LOGOFF 109,548 17.5%
COMMENT 39 0.0%
SAVE 5,458 0.9%
USE 5,045 0.8%
OTHER 27,162 4.3%
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 35,591 15.4% 8,502 23.9% 11 86.2 447.9
AUTHOR 9,864 4.3% 2,316 23.5% 13 110.4 451.8
CORPORATE AUTH 2,383 1.0% 852 35.8% 19 548.8 3867.2
EXACT CA 69 0.0% 25 36.2% 58 710.0 1772.3
TITLE WORD 56,433 24.4% 17,308 30.7% 4 49.1 624.7
EXACT TITLE 33,064 14.3% 8,852 26.8% 2 22.0 233.9
TITLE -> TW 5,107 2.2% 1,283 25.1% 9 79.6 1084.4
TITLE -> XT 5,997 2.6% 2,765 46.1% 1 10.5 81.8
SUBJECT 11,531 5.0% 4,195 36.4% 45 417.6 2227.2
EXACT SUBJECT 959 0.4% 162 16.9% 96 664.6 1799.3
PERIODICAL 40,406 17.5% 8,144 20.2% 4 76.5 922.0
EXACT PE 13,606 5.9% 1,962 14.4% 3 24.8 425.4
RPE 4 0.0% 2 50.0% 3 2.5 2.1
XRP 6 0.0% 0 0.0% 4 11.5 14.4
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 437 0.2% 58 13.3% 34 316.8 2813.2
DATE 3,677 1.6% 847 23.0% 3 45.4 240.7
FORM 3,000 1.3% 680 22.7% 12 512.4 6757.4
NUMBER* 199 0.1% 81 40.7% 1 29.1 101.3
MUSIC* 111 0.0% 69 62.2% 10 334.4 797.0
SERIES 5,534 2.4% 1,789 32.3% 4 71.7 753.8
UNIFORM TITLE 87 0.0% 26 29.9% 32 282.4 813.9
Other indexes 3,058 1.3% 1,205 39.4% 1 20.1 260.7
* 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 14,336 6.6% 3,937 27.5% 4 53.0 491.1
Single 201,416 93.4% 53,027 26.3% 5 93.1 1239.6
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 124 10.6% 26 21.0% 3 43.2 129.9
CORPORATE AUTH 12 1.0% 4 33.3% 54 103.5 121.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 912 77.9% 193 21.2% 37 139.6 417.9
EXACT SUBJECT 91 7.8% 6 6.6% 49 109.3 174.7
UNIFORM TITLE 3 0.3% 3 100% 0 0.0 0.0
SERIES 28 2.4% 3 10.7% 16 48.8 58.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,220 100% 248 20.3% 32 123.1 372.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.7%
BRIEF 67.7%
LONG 10.7%
MARC 3.0%
FIELDS 3.0%
TAG 2.4%
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 7.5%
Ten most frequent errors:
1. NS command - no next screen 30.1%
2. First word of command is invalid 25.9%
3. FIND command with invalid index name 12.2%
4. DISPLAY command contains invalid word 4.5%
5. Search term missing from search command 2.5%
6. KW search in database w/o KW index 2.0%
7. Max. # of ports to a Z39 db are in use 1.9%
8. PS command - no previous screen 1.9%
9. DISPLAY command - no FIND results 1.8%
10. Valid command at an inappropriate time 1.6%
11. All others 15.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.1%
2. FIND 14.2%
3. INDEXES 6.5%
4. COMMAND WORDS 6.0%
5. Unrecognized term 5.4%
6. PASSWORDS 3.1%
7. DISPLAY 2.7%
8. DATABASES 2.1%
9. LOCATE (PE DB) 1.9%
10. CATALOG 1.9%
11. All others 30.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.3%
2. First word of command is invalid 14.3%
3. FIND command with invalid index name 13.3%
4. DISPLAY command - middle of >1 screen 4.0%
5. NS command - no next screen 3.0%
6. DISPLAY command-first of >1 screen 2.7%
7. DISPLAY command-complete in one screen 2.6%
8. F/BR with index invalid in current DB 2.2%
9. FIND command retrieves >1 book 2.2%
10. DISPLAY command - last of >1 screen 2.0%
11. All others 31.4%
Ten most frequent SHOW requests:
1. HISTORY 33.9%
2. TIME 22.1%
3. SEARCH 10.8%
4. GLOSSARY 7.5%
5. SETTINGS 3.6%
6. MAIL STATUS 2.4%
7. SYSTEM NEWS 1.8%
8. DATABASE NEWS 1.8%
9. SYSTEMS INFORMATION 1.4%
10. NEWS 0.9%
11. All others 13.9%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)