MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 09/01/00 through 09/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,909 11,991 16,900
Davis 7,892 1,401 9,293
Irvine 3,380 0 3,380
Los Angeles 786 2,782 3,568
Riverside 2,474 447 2,921
San Diego 1,696 1,187 2,883
San Francisco 1,626 0 1,626
Santa Barbara 1,917 1,329 3,246
Santa Cruz 1,686 1,091 2,777
LBL 0 585 585
LLL 0 321 321
Other - UC 159 1,041 1,200
CSL 0 686 686
CSU n/a 791 791
Other-Non UC n/a 18,860 18,860
_______ ______ _____
26,525 42,512 69,037
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,099 3,583 29,842
2-4 a.m. 709 2,205 21,339
4-6 a.m. 802 2,813 20,938
6-8 a.m. 1,818 5,100 44,141
8-10 a.m. 8,359 26,054 200,355
10-12 a.m. 13,101 42,907 327,276
12-2 p.m. 12,821 42,728 319,976
2-4 p.m. 14,600 47,722 364,902
4-6 p.m. 9,302 31,083 238,065
6-8 p.m. 3,053 9,364 70,817
8-10 p.m. 1,918 5,480 48,879
10-12 p.m. 1,455 4,232 39,863
__________ __________ __________ _________________
Total: 69,037 223,271 1,726,393
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 14,052 34,993 49,045
Davis 32,368 5,729 38,097
Irvine 9,150 0 9,150
Los Angeles 1,924 7,508 9,432
Riverside 8,761 887 9,648
San Diego 4,976 2,465 7,441
San Francisco 3,427 0 3,427
Santa Barbara 6,361 3,466 9,827
Santa Cruz 8,764 2,713 11,477
LBL 0 848 848
LLL 0 994 994
Other - UC 213 3,222 3,435
CSL 0 948 948
CSU n/a 3,159 3,159
Other-Non UC n/a 66,343 66,343
_______ ______ _____
89,996 133,275 223,271
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 113,153 295,065 408,218
Davis 192,203 30,808 223,011
Irvine 81,199 0 81,199
Los Angeles 14,243 64,367 78,610
Riverside 61,682 7,640 69,322
San Diego 29,919 21,585 51,504
San Francisco 23,732 0 23,732
Santa Barbara 51,734 35,574 87,308
Santa Cruz 44,079 24,614 68,693
LBL 0 9,633 9,633
LLL 0 6,875 6,875
Other - UC 1,729 21,100 22,829
CSL 0 6,402 6,402
CSU n/a 33,313 33,313
Other-Non UC n/a 555,744 555,744
_______ ______ _____
613,673 1,112,720 1,726,393
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 4.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 2.4
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1216
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 73.5
Retrievals per search - standard deviation 1786.4
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 4.0%
Percent of long searches completed
(includes partial results) 59.6%
Commands entered, by type, excluding errors:
Total Percentage
FIND 215,797 35.1%
DISPLAY (excluding automatic displays) 194,827 31.7%
ACFIND 68 0.0%
BROWSE 1,402 0.2%
SELECT 906 0.1%
HELP 5,776 0.9%
EXPLAIN 6,045 1.0%
SET/RESET 14,638 2.4%
SHOW 1,592 0.3%
AT 13,120 2.1%
ADD ON (AND, OR, AND NOT) 7,293 1.2%
LOGON or LOGOFF 114,062 18.5%
COMMENT 65 0.0%
SAVE 4,959 0.8%
USE 5,163 0.8%
OTHER 29,799 4.8%
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 34,522 15.3% 8,215 23.8% 11 91.4 515.8
AUTHOR 10,769 4.8% 2,613 24.3% 13 106.6 390.0
CORPORATE AUTH 2,488 1.1% 859 34.5% 23 488.4 2861.8
EXACT CA 70 0.0% 24 34.3% 92 577.2 1287.4
TITLE WORD 56,736 25.1% 17,726 31.2% 4 49.2 644.9
EXACT TITLE 29,836 13.2% 8,562 28.7% 2 27.0 262.1
TITLE -> TW 5,738 2.5% 1,439 25.1% 9 74.5 555.6
TITLE -> XT 6,487 2.9% 2,972 45.8% 1 12.7 103.5
SUBJECT 12,860 5.7% 4,512 35.1% 41 483.6 8295.5
EXACT SUBJECT 722 0.3% 162 22.4% 56 745.5 3741.6
PERIODICAL 37,450 16.6% 7,642 20.4% 5 99.0 1211.5
EXACT PE 12,665 5.6% 1,930 15.2% 3 24.6 334.1
RPE 14 0.0% 3 21.4% 7 158.3 337.1
XRP 12 0.0% 1 8.3% 2 3.8 2.8
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 735 0.3% 151 20.5% 33 725.1 4382.8
DATE 2,987 1.3% 726 24.3% 6 91.8 678.2
FORM 2,870 1.3% 538 18.7% 14 227.6 2176.9
NUMBER* 324 0.1% 128 39.5% 2 12.1 63.8
MUSIC* 69 0.0% 29 42.0% 54 342.4 570.7
SERIES 4,911 2.2% 1,576 32.1% 4 66.5 268.9
UNIFORM TITLE 42 0.0% 13 30.9% 20 223.4 616.7
Other indexes 3,572 1.6% 1,591 44.5% 1 105.0 1073.4
* 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 12,566 5.9% 3,321 26.4% 5 74.9 533.0
Single 199,639 94.1% 54,559 27.3% 5 101.7 2181.7
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 132 9.9% 24 18.2% 7 43.0 98.5
CORPORATE AUTH 21 1.6% 4 19.0% 10 49.9 111.0
EXACT CA 1 0.1% 1 100% 0 0.0 0.0
SUBJECT 1,071 80.7% 200 18.7% 48 218.7 951.4
EXACT SUBJECT 86 6.5% 13 15.1% 43 241.6 1029.9
UNIFORM TITLE 2 0.2% 1 50.0% 35 35.0 0.0
SERIES 14 1.1% 5 35.7% 9 33.2 51.1
By number of indexes:
Multiple 1 0.1% 0 0.0% 8,787 8787.0 0.0
Single 1,346 99.9% 254 18.9% 36 180.2 813.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.1%
BRIEF 68.1%
LONG 9.8%
MARC 3.5%
FIELDS 3.1%
TAG 2.7%
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 8.4%
Ten most frequent errors:
1. NS command - no next screen 28.0%
2. First word of command is invalid 26.2%
3. FIND command with invalid index name 12.4%
4. Max. # of ports to a Z39 db are in use 4.1%
5. DISPLAY command contains invalid word 3.9%
6. Search term missing from search command 2.4%
7. KW search in database w/o KW index 2.1%
8. PS command - no previous screen 1.9%
9. Valid command at an inappropriate time 1.6%
10. DISPLAY command - no FIND results 1.6%
11. All others 15.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.9%
2. FIND 13.6%
3. INDEXES 6.2%
4. COMMAND WORDS 5.6%
5. Unrecognized term 5.2%
6. PASSWORDS 4.0%
7. DATABASES 3.7%
8. DISPLAY 2.4%
9. ADD-ON SEARCH 1.9%
10. CATALOG 1.7%
11. All others 30.9%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.9%
2. First word of command is invalid 15.4%
3. FIND command with invalid index name 12.2%
4. DISPLAY command - middle of >1 screen 4.2%
5. FIND command retrieves >1 book 2.8%
6. NS command - no next screen 2.6%
7. DISPLAY command-first of >1 screen 2.6%
8. DISPLAY command-complete in one screen 2.3%
9. DISPLAY command - last of >1 screen 2.2%
10. TW search with zero results 2.0%
11. All others 30.7%
Ten most frequent SHOW requests:
1. HISTORY 39.0%
2. TIME 12.1%
3. SEARCH 10.4%
4. GLOSSARY 9.5%
5. SETTINGS 4.5%
6. MAIL STATUS 2.6%
7. DATABASE NEWS 2.0%
8. UPDATE 1.7%
9. Z39.50 NEWS 1.4%
10. SYSTEM NEWS 1.2%
11. All others 15.6%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)