MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 06/01/00 through 06/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,897 10,632 14,529
Davis 9,124 1,658 10,782
Irvine 3,743 0 3,743
Los Angeles 1,323 3,546 4,869
Riverside 3,133 678 3,811
San Diego 2,196 1,026 3,222
San Francisco 1,628 0 1,628
Santa Barbara 2,290 1,664 3,954
Santa Cruz 1,821 938 2,759
LBL 0 573 573
LLL 0 434 434
Other - UC 192 765 957
CSL 0 772 772
CSU n/a 605 605
Other-Non UC n/a 21,205 21,205
_______ ______ _____
29,347 44,496 73,843
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,382 4,516 44,799
2-4 a.m. 1,039 4,279 37,328
4-6 a.m. 953 3,640 28,972
6-8 a.m. 2,135 6,051 49,579
8-10 a.m. 8,842 29,766 216,383
10-12 a.m. 14,310 48,861 351,837
12-2 p.m. 13,061 42,811 348,262
2-4 p.m. 15,437 50,196 388,509
4-6 p.m. 9,825 32,804 257,507
6-8 p.m. 3,113 10,915 85,631
8-10 p.m. 2,041 6,092 61,331
10-12 p.m. 1,705 4,945 45,451
__________ __________ __________ _________________
Total: 73,843 244,876 1,915,589
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,826 32,949 44,775
Davis 30,593 6,272 36,865
Irvine 12,583 0 12,583
Los Angeles 3,472 9,271 12,743
Riverside 10,987 1,216 12,203
San Diego 6,061 2,484 8,545
San Francisco 2,955 0 2,955
Santa Barbara 7,922 4,122 12,044
Santa Cruz 6,820 3,003 9,823
LBL 0 1,284 1,284
LLL 0 1,291 1,291
Other - UC 146 2,227 2,373
CSL 0 2,492 2,492
CSU n/a 2,558 2,558
Other-Non UC n/a 82,342 82,342
_______ ______ _____
93,365 151,511 244,876
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 103,387 272,048 375,435
Davis 207,594 30,804 238,398
Irvine 92,618 0 92,618
Los Angeles 23,846 76,364 100,210
Riverside 75,850 11,436 87,286
San Diego 34,320 20,274 54,594
San Francisco 25,291 0 25,291
Santa Barbara 79,658 36,317 115,975
Santa Cruz 55,312 22,230 77,542
LBL 0 15,779 15,779
LLL 0 9,863 9,863
Other - UC 1,486 19,383 20,869
CSL 0 14,188 14,188
CSU n/a 22,796 22,796
Other-Non UC n/a 664,745 664,745
_______ ______ _____
699,362 1,216,227 1,915,589
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 3.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.0
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 947:58
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 73.4
Retrievals per search - standard deviation 1172.5
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 59.1%
Commands entered, by type, excluding errors:
Total Percentage
FIND 237,114 35.6%
DISPLAY (excluding automatic displays) 213,999 32.1%
ACFIND 42 0.0%
BROWSE 1,396 0.2%
SELECT 898 0.1%
HELP 5,593 0.8%
EXPLAIN 6,027 0.9%
SET/RESET 16,415 2.5%
SHOW 1,492 0.2%
AT 12,832 1.9%
ADD ON (AND, OR, AND NOT) 7,627 1.1%
LOGON or LOGOFF 120,811 18.1%
COMMENT 5 0.0%
SAVE 5,661 0.8%
USE 5,593 0.8%
OTHER 30,705 4.6%
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 35,023 14.2% 8,365 23.9% 11 90.2 497.3
AUTHOR 12,794 5.2% 3,179 24.8% 13 116.3 565.7
CORPORATE AUTH 2,629 1.1% 918 34.9% 25 678.0 4565.7
EXACT CA 124 0.1% 42 33.9% 107 504.9 1033.0
TITLE WORD 59,899 24.3% 18,690 31.2% 4 47.9 833.7
EXACT TITLE 34,122 13.8% 9,997 29.3% 2 24.0 266.7
TITLE -> TW 6,422 2.6% 1,695 26.4% 8 51.8 184.9
TITLE -> XT 6,832 2.8% 3,167 46.4% 1 9.9 83.8
SUBJECT 13,518 5.5% 5,038 37.3% 47 484.1 3560.9
EXACT SUBJECT 747 0.3% 210 28.1% 79 548.1 1940.3
PERIODICAL 45,829 18.6% 9,305 20.3% 5 113.3 1733.8
EXACT PE 13,555 5.5% 2,001 14.8% 3 23.0 223.2
RPE 17 0.0% 7 41.2% 10 8.1 4.6
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 602 0.2% 130 21.6% 40 641.5 4203.1
DATE 3,633 1.5% 850 23.4% 3 81.8 1478.6
FORM 2,540 1.0% 608 23.9% 13 230.1 2813.7
NUMBER* 251 0.1% 68 27.1% 2 179.1 819.8
MUSIC* 55 0.0% 37 67.3% 9 152.1 319.5
SERIES 4,793 1.9% 1,556 32.5% 3 67.5 321.1
UNIFORM TITLE 59 0.0% 21 35.6% 49 763.5 1322.7
Other indexes 3,309 1.3% 1,316 39.8% 1 88.5 1126.4
* 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 12,888 5.5% 3,592 27.9% 4 66.7 730.3
Single 220,223 94.5% 59,861 27.2% 5 103.0 1415.2
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 175 13.4% 31 17.7% 3 20.7 54.0
CORPORATE AUTH 52 4.0% 6 11.5% 13 14.1 24.4
EXACT CA 2 0.2% 0 0.0% 49 48.5 67.2
SUBJECT 999 76.6% 236 23.6% 49 260.1 2244.6
EXACT SUBJECT 70 5.4% 8 11.4% 85 199.0 399.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 7 0.5% 3 42.9% 92 88.8 73.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,345 100% 289 21.5% 29 204.9 1912.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.8%
BRIEF 68.7%
LONG 10.4%
MARC 3.4%
FIELDS 2.7%
TAG 2.5%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.5%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.0%
Ten most frequent errors:
1. NS command - no next screen 30.4%
2. First word of command is invalid 27.1%
3. FIND command with invalid index name 12.1%
4. DISPLAY command contains invalid word 4.1%
5. KW search in database w/o KW index 2.6%
6. Search term missing from search command 2.5%
7. PS command - no previous screen 2.1%
8. Valid command at an inappropriate time 1.6%
9. DISPLAY command - no FIND results 1.5%
10. Index invalid in current database 1.3%
11. All others 14.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.7%
2. FIND 13.5%
3. INDEXES 6.9%
4. COMMAND WORDS 6.0%
5. Unrecognized term 5.5%
6. PASSWORDS 3.6%
7. DATABASES 3.0%
8. DISPLAY 2.3%
9. LOCATE (PE DB) 2.0%
10. CATALOG 1.6%
11. All others 28.8%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.2%
2. First word of command is invalid 13.6%
3. FIND command with invalid index name 12.1%
4. DISPLAY command - middle of >1 screen 3.6%
5. FIND command retrieves >1 book 2.9%
6. DISPLAY command-first of >1 screen 2.8%
7. NS command - no next screen 2.7%
8. DISPLAY command-complete in one screen 2.4%
9. KW search in database w/o KW index 2.3%
10. F/BR with index invalid in current DB 2.3%
11. All others 32.0%
Ten most frequent SHOW requests:
1. HISTORY 44.9%
2. GLOSSARY 11.3%
3. SEARCH 9.8%
4. SETTINGS 3.7%
5. MAIL STATUS 3.2%
6. LAUC NEWS 2.9%
7. DATABASE NEWS 2.0%
8. SYSTEM NEWS 1.7%
9. DATABASES 1.5%
10. NEWS 1.3%
11. All others 17.7%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)