MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 12/01/01 through 12/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,813 6,604 8,417
Davis 4,854 681 5,535
Irvine 1,252 0 1,252
Los Angeles 25 1,399 1,424
Riverside 1,116 292 1,408
San Diego 1,202 534 1,736
San Francisco 611 0 611
Santa Barbara 600 387 987
Santa Cruz 465 486 951
LBL 0 229 229
LLL 0 224 224
Other - UC 146 590 736
CSL 0 480 480
CSU n/a 358 358
Other-Non UC n/a 11,822 11,822
_______ ______ _____
12,084 24,086 36,170
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 675 2,014 20,676
2-4 a.m. 594 1,819 16,183
4-6 a.m. 537 1,700 13,911
6-8 a.m. 1,300 2,938 21,368
8-10 a.m. 4,664 16,375 114,517
10-12 a.m. 6,984 25,014 176,393
12-2 p.m. 6,285 22,495 160,660
2-4 p.m. 7,116 25,104 181,747
4-6 p.m. 4,284 15,368 119,876
6-8 p.m. 1,659 5,431 43,715
8-10 p.m. 1,144 3,724 29,625
10-12 p.m. 928 2,519 33,193
__________ __________ __________ _________________
Total: 36,170 124,501 931,864
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,631 22,428 27,059
Davis 18,360 3,079 21,439
Irvine 6,537 0 6,537
Los Angeles 56 3,376 3,432
Riverside 4,311 854 5,165
San Diego 3,755 1,143 4,898
San Francisco 1,006 0 1,006
Santa Barbara 2,472 804 3,276
Santa Cruz 2,678 1,247 3,925
LBL 0 199 199
LLL 0 565 565
Other - UC 119 1,754 1,873
CSL 0 557 557
CSU n/a 1,185 1,185
Other-Non UC n/a 43,385 43,385
_______ ______ _____
43,925 80,576 124,501
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 40,338 157,366 197,704
Davis 120,450 14,261 134,711
Irvine 42,185 0 42,185
Los Angeles 278 28,312 28,590
Riverside 32,148 7,004 39,152
San Diego 19,311 9,465 28,776
San Francisco 8,500 0 8,500
Santa Barbara 24,148 7,269 31,417
Santa Cruz 13,124 10,608 23,732
LBL 0 2,115 2,115
LLL 0 5,681 5,681
Other - UC 926 14,102 15,028
CSL 0 5,340 5,340
CSU n/a 12,796 12,796
Other-Non UC n/a 356,137 356,137
_______ ______ _____
301,408 630,456 931,864
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 2.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1202
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 65.4
Retrievals per search - standard deviation 1503.9
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 65.2%
Commands entered, by type, excluding errors:
Total Percentage
FIND 120,013 35.9%
DISPLAY (excluding automatic displays) 109,088 32.7%
ACFIND 15 0.0%
BROWSE 572 0.2%
SELECT 406 0.1%
HELP 1,782 0.5%
EXPLAIN 2,114 0.6%
SET/RESET 7,880 2.4%
SHOW 718 0.2%
AT 7,812 2.3%
ADD ON (AND, OR, AND NOT) 4,447 1.3%
LOGON or LOGOFF 60,668 18.2%
COMMENT 3 0.0%
SAVE 1,681 0.5%
USE 2,580 0.8%
OTHER 14,100 4.2%
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 18,485 14.8% 4,222 22.8% 10 74.9 395.9
AUTHOR 4,872 3.9% 1,214 24.9% 14 171.6 1475.2
CORPORATE AUTH 1,564 1.2% 558 35.7% 22 618.6 2724.6
EXACT CA 34 0.0% 4 11.8% 11 172.5 557.2
TITLE WORD 28,184 22.5% 9,072 32.2% 4 47.4 439.8
EXACT TITLE 18,954 15.1% 5,226 27.6% 2 21.1 142.5
TITLE -> TW 3,458 2.8% 801 23.2% 8 59.8 469.6
TITLE -> XT 4,401 3.5% 1,902 43.2% 2 11.1 128.0
SUBJECT 5,648 4.5% 1,951 34.5% 45 563.4 7838.2
EXACT SUBJECT 291 0.2% 75 25.8% 89 789.0 3448.1
PERIODICAL 22,504 18.0% 4,548 20.2% 5 67.8 713.5
EXACT PE 7,969 6.4% 1,178 14.8% 3 30.9 492.9
RPE 7 0.0% 1 14.3% 5 4.5 1.9
XRP 2 0.0% 0 0.0% 27 26.5 12.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 184 0.1% 28 15.2% 33 526.7 2492.3
DATE 1,827 1.5% 430 23.5% 4 91.2 1155.2
FORM 1,305 1.0% 304 23.3% 12 309.1 3026.4
NUMBER* 82 0.1% 41 50.0% 2 180.6 615.4
MUSIC* 28 0.0% 20 71.4% 13 23.1 23.7
SERIES 2,637 2.1% 844 32.0% 3 62.3 698.2
UNIFORM TITLE 28 0.0% 8 28.6% 6 184.9 397.7
Other indexes 2,854 2.3% 1,312 46.0% 1 11.7 209.3
* 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 6,566 5.5% 1,695 25.8% 4 67.3 866.0
Single 111,875 94.5% 30,283 27.1% 4 90.4 1818.4
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 33 6.6% 4 12.1% 25 47.2 55.2
CORPORATE AUTH 5 1.0% 1 20.0% 82 95.3 76.1
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 386 77.7% 80 20.7% 56 181.6 665.1
EXACT SUBJECT 67 13.5% 4 6.0% 57 163.0 202.4
UNIFORM TITLE 2 0.4% 0 0.0% 2 2.0 0.0
SERIES 4 0.8% 3 75.0% 1 1.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 535 100% 96 17.9% 47 161.5 574.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.7%
BRIEF 67.3%
LONG 10.1%
MARC 4.1%
FIELDS 2.9%
TAG 1.9%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.0%
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 30.5%
2. First word of command is invalid 23.0%
3. FIND command with invalid index name 10.9%
4. Max. # of ports to a Z39 db are in use 8.7%
5. DISPLAY command contains invalid word 4.0%
6. Search term missing from search command 2.0%
7. PS command - no previous screen 1.7%
8. KW search in database w/o KW index 1.6%
9. DISPLAY command - no FIND results 1.6%
10. Valid command at an inappropriate time 1.3%
11. All others 14.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.2%
2. FIND 13.5%
3. INDEXES 6.4%
4. Unrecognized term 5.6%
5. COMMAND WORDS 5.6%
6. PASSWORDS 4.5%
7. DISPLAY 2.2%
8. DATABASES 2.1%
9. 3190 1.8%
10. G961 1.8%
11. All others 36.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.1%
2. First word of command is invalid 14.4%
3. FIND command with invalid index name 10.8%
4. DISPLAY command - middle of >1 screen 3.2%
5. FIND command retrieves >1 book 3.1%
6. DISPLAY command-first of >1 screen 3.0%
7. DISPLAY command - last of >1 screen 2.5%
8. DISPLAY command-complete in one screen 2.4%
9. NS command - no next screen 2.3%
10. FIND command retrieves 1 book 2.1%
11. All others 31.2%
Ten most frequent SHOW requests:
1. HISTORY 42.2%
2. GLOSSARY 7.5%
3. SEARCH 5.6%
4. SETTINGS 5.5%
5. MAIL STATUS 4.3%
6. DATABASE NEWS 3.6%
7. NEWS 2.9%
8. SYSTEM NEWS 1.4%
9. CC LOADING STATISTICS 1.3%
10. MEDLINE NEWS 1.1%
11. All others 24.7%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)