First, let's take a look at the two commonly used camera models in the game: the Euler's camera model and the uvn camera model.
1. Euler's camera model
Euler angles is a method used to describe the direction of a rigid body in a three-dimensional Euclidean space) describes the direction of an object.
Notes:
1) undo
Assume that the angle transformation sequence applied to an object is Pyr. To restore the original direction of the object, the transfor
$ rollname B where a. usn = B. usn;3. I/O ratio of the monitored tablespace:Select df. tablespace_name name, df. file_name "file", f. phyrds pyr, f. phyblkrd pbr, f. phywrts pyw,F. phyblkwrt pbwFrom v $ filestat f, dba_data_files dfWhere f. file # = df. file_id4. I/O ratio of the empty file system:Select substr (a. file #, 1, 2) "#", substr (a. name, 1, 30) "name", a. status, a. bytes,B. phyrds, B. phywrtsFrom v $ datafile a, v $ filestat BWhere a. f
(Bytes/sgasize * 100, 2) "Free Space percentage (% )"From (select sum (bytes) sgasize from SYS. V _ $ sgastat) s,SYS. V _ $ sgastat FWhere F. Name = 'free memory'
-- Monitor the I/O ratio of tablespaceSelect DF. tablespace_name name,DF. file_name "file ",F. phyrds Pyr,F. phyblkrd PBR,F. phywrts pyw,F. phyblkwrt PBWFrom v $ filestat F, dba_data_files DFWhere F. File # = DF. file_idOrder by DF. tablespace_name;-- Monitor the I/O ratio of the file syste
illustrate the problem:Pyr . Resize (noctaves* (Noctavelayers + 3));The Pyr in the above code represents an image of the entire scale space, noctaves is the number of groups, and Noctavelayers is the s that we define.2.3 Why is it the 3rd one?I believe you're looking at a lot of the SIFT algorithm description, which reads, takes the last image of the bottom 3rd image interlaced as the next set of first images.The answer is to ensure the continuity of
,
max_extents,
v.curext curextent
from Dba_rollback_segs R, V$rollstat v
Where= V.usn (+)
Order by Segment_name; 4. View the rollback segment name and size Select file_name from Dba_data_files 5. Query tablespace or data file Auto-expansion Select df.tablespace_name name,
DF. file_name " file ",
f.phyrds pyr,
f.phyblkrd PBR,
f.phywrts pyw,
f.phyblkwrt PBW
' | | To_char (i));
End
Sql>wrap Iname=a.sql;
Pl/sql wrapper:release 8.1.7.0.0-production on Tue Nov 27 22:26:48 2001
Copyright (c) Oracle Corporation 1993, 2000. All Rights Reserved.
Processing Aa.sql to AA.PLB
Run AA.PLB
Sql> @AA. PLB;
145. How to monitor the waiting of cases?
Select Event,sum (Decode (wait_time,0,0,1)) "Prev",
SUM (decode (wait_time,0,1,0)) "Curr", COUNT (*) "Tot"
From v$session_wait
Group BY event order by 4;
146. How do I roll back the contention for the segment?
Select na
compilation is used to prevent duplicate definitions when containing multiple headersDefined only when not defined#ifndef NULL#define NULL ((void *) 0)#endif(2) The most commonly used to prevent the inclusion of multiple headers, a header file contains two times, resulting in a duplicate definition#ifndef _filename_h#define _filename_h#endif/* _filename_h * *2. #ifdef#else/****** Optional ******/#endif(1) Determining whether a part of a program participates in compiling or not#ifdef __LIBRARY__
(gets,0,0,misses/gets*100) Ratio1,Decode (immediate_gets+immediate_misses,0,0,Immediate_misses/(immediate_gets+immediate_misses) *100) Ratio2From V$latch WHERE name in (' Redo allocation ', ' redo copy ');Monitor the use of Log_bufferSelect Name,value from V$sysstat where name in (' Redo entries ', ' Redo buffer allocation retries ')Monitor the database buffer hit ratio in the SGASelect A.value + b.value "logical_reads", C.value "Phys_reads",Round ((a.value+b.value)-c.value)/(A.value+b.value))
1. Wait for the monitoring case:Select Event,sum (Decode (wait_time,0,0,1)) prev, sum (decode (wait_time,0,1,0)) curr,count (*)From v$session_waitGroup BY event order by 4; 2. Race conditions for rollback segments :Select Name,waits,gets,waits/gets ratio from V$rollstat a,v$rollname b where a.usn=b.usn; 3. Monitor the I/O ratio of the table space:Select Df.tablespace_name name,df.file_name "file", F.phyrds pyr,f.phyblkrd pbr,f.phywrts pyw,F.
1. Wait for the monitor case Select Event,sum (Decode (wait_time,0,0,1)) "Prev", Sum (Decode (wait_time,0,1,0)) "Curr", COUNT (*) "Tot" From V$session_wait Group BY event order by 4;Note: ORDER by 4 refers to sort by 4th column2. Race Conditions for rollback segments Select name, waits, get, waits/gets "Ratio" from v$rollstat A, v$rollname b where A.usn = b.usn;3. Monitoring table space I/O ratio select df.tablespace_name name,df.file_name "file", F.phyrds
$rollstat C, V$rollname D
WHERE C.usn = D.usn;
--How to monitor I/O ratios in the table space?
SELECT b.tablespace_name Name,
B.file_name "File",
A.phyrds Pyr,
A.PHYBLKRD PBR,
A.phywrts Pyw,
A.phyblkwrt PBW
From V$filestat A, Dba_data_files B
WHERE a.file# = b.file_id
Order BY B.tablespace_name;
--How to monitor the I/O ratio of the file system?
Select substr (c.file#, 1, 2) "#",
SUBSTR (C.name, 1,) "Name",
C.status,
C.bytes,
D.phyrds
ratio from V $ rollstat A, V $ rollname B where a. USN = B. USN;3. I/O ratio of the monitored tablespace:Select DF. tablespace_name name, DF. file_name "file", F. phyrds Pyr, F. phyblkrd PBR, F. phywrts pyw,F. phyblkwrt PBWFrom v $ filestat F, dba_data_files DFWhere F. File # = DF. file_id4. I/O ratio of the empty file system:Select substr (A. File #, 1, 2) "#", substr (A. Name, 1, 30) "name", A. Status, A. bytes,B. phyrds, B. phywrtsFrom v $ datafil
be inconsistent;
L Sum (physical blocks read) is similar to physical reads in V$sysstat;
L Sum (physical blocks written) is similar to physical writes in V$sysstat;
The data read (read better by the cache) is handled by the service process. Write from buffer cache can only be performed by DBWR, which is processed by the service process.
V$filestat the connection column inColumn View Joined column (s)----------- ------------------------- -------------------------file# Dba_data_f
1. Waiting for monitoring cases:Select event, sum (decode (wait_time, 1) Prev, sum (decode (wait_time, 0) curr, count (*)From v $ session_waitGroup by event order by 4;2. rollback segment contention:Select name, waits, gets, Waits/gets ratio from V $ rollstat A, V $ rollname B where a. USN = B. USN;3. I/O ratio of the monitored tablespace:Select DF. tablespace_name name, DF. file_name "file", F. phyrds Pyr, F. phyblkrd PBR, F. phywrts pyw,F. phyblkwrt
. PLB
Run AA. PLB
SQL> @ AA. PLB;
145. How to monitor the waiting of cases?
Select event, sum (decode (wait_time, 0, 0, 1) "Prev ",
Sum (decode (wait_time, 0, 0) "curr", count (*) "tot"
From v $ session_wait
Group by event order by 4;
146. How do I roll back the contention of segments?
Select name, waits, gets, Waits/gets "ratio"
From v $ rollstat C, V $ rollname d
Where C. USN = D. USN;
147. How to monitor the I/O ratio of a tablespace?
Select B. tablespace_name name, B. file_name "file", A. ph
blocks written) is similar to physical writes in V $ sysstat;
L Data Reading (better than direct read by cache) is processed by the service process. Writing from the buffer cache can only be performed by dbwr, and direct writing is handled by the service process.
V $ filestatConnection column in
Column view joined column (s)
-------------------------------------------------------------
File # dba_data_files file_id
File # V $ datafile file #
Example:
1. Obtain the physical reads and writes of d
1. Waiting for monitoring cases
Select event, sum (decode (wait_time, 0, 0, 1) "Prev ",Sum (decode (wait_time, 0, 0) "curr", count (*) "tot"From v $ session_waitGroup by event order by 4;
2. rollback segment contention
Select name, waits, gets, Waits/gets "ratio"From v $ rollstat A, V $ rollname BWhere a. USN = B. USN;
3. Monitor the I/O ratio of tablespaces
Select DF. tablespace_name name, DF. file_name "file", F. phyrds Pyr,F. phyblkrd PBR
compilation is used.That is, it is defined only when no definition is available.# Ifndef null# Define null (void *) 0)# Endif(2) The most common practice is to prevent a header file from being contained twice when multiple head files are contained, resulting in repeated definitions.# Ifndef _ filename_h# DEFINE _ filename_h# Endif/* _ filename_h */2. # ifdef# Else/****** optional ******/# Endif(1) determine whether a part of the program is compiled or not.# Ifdef _ Library __# Endif/***** _ Lib
, substr (A. Program, 60/100) prog, A. Terminal, osuser, value/valueFrom v $ session A, V $ process B, V $ sesstat CWhere C. Statistic # = 12 and C. Sid = A. Sid and A. paddr = B. ADDR order by value DESC;
Monitor the I/O ratio of a tablespace
Select DF. tablespace_name name, DF. file_name "file", F. phyrds Pyr,F. phyblkrd PBR, F. phywrts pyw, F. phyblkwrt PBWFrom v $ filestat F, dba_data_files DFWhere F. File # = DF. file_idOrder by DF. tablespace_na
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.