birt ean 13

birt ean 13

birt ean 13

birt ean 13

birt ean 13

birt ean 13,
birt ean 13,

birt ean 13,

birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,

birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,

birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,
birt ean 13,

We ll worry about the CPU component in a little while, but slotting in the 30 milliseconds and 5 milliseconds that we set for the mreadtim and sreadtim, the formula gives us an I/O cost of (10,000 / 12 ) * ( 30 / 5 ) = 5,000. And, of course, we have to remember that _tablescan_cost_plus_one is set to true, and we get to our target 5,001. So we can see that when system statistics are active, the I/O cost of a tablescan uses the actual value of MBRC instead of an adjusted db_file_multiblock_read_count, and then caters to the difference in speed between a single-block read and a multiblock read by multiplying up by (recorded multiblock read time / recorded single-block read time). If you have not collected system statistics in 10g, you will find that the optimizer makes use of three other statistics from the aux_stats$ table: PNAME PVAL1 --------------- ---------CPUSPEEDNW 913.641 IOSEEKTIM 10 IOTFRSPEED 4096

One of the amazing things about the BlackBerry is just how powerful it can be as a media center. Using a Bluetooth stereo in your car, you can stream your music via Bluetooth right through your car stereo. To stream stereo music via Bluetooth, just pair your BlackBerry with a Bluetooth music source, as described on Page 451. Also, ensure that the Bluetooth device supports the Bluetooth Stereo Audio format (sometimes called A2DP). You should also ensure that your BlackBerry is connected to a stereo music player or use the BlackBerry Remote Stereo Gateway utility mentioned on page 459. If you meet these criteria, you can simply follow the steps for playing your music described earlier in this chapter.

Listing 12-2. Consuming a Wrapped Global Function in C# // consume_cpp.cs // Compile with csc /r:global_function.dll consume_cpp.cs. using G; class C { public static void Main() { // FGlobal(); // Error: global functions not available in C#. R.FMember(); // OK } }; The output of Listing 12-2 is as follows: C++/CLI Static Member Function. Global C++/CLI Function. Listing 12-3 shows a C++/CLI interface that is then implemented in a VB class in Listing 12-4. Listing 12-3. Creating an Interface in C++ // interface_example.cpp // Compile with cl /clr:pure /LD interface_example.cpp. public interface class ITest { void F(); void G(); }; Listing 12-4. Using an Interface in Visual Basic ' implement_example.vb ' Compile with vbc /r:interface_example.dll implement_example.vb. Public Class VBClass Implements ITest Public Sub F Implements ITest.F Console.WriteLine("F in VB") End Sub

-- speed in millions of operations per second -- disk seek time in milliseconds -- disk transfer time in bytes per millisecond

Internet radio is a great way to listen to music on the go. There are several applications that allow you to set up and listen to streaming Internet radio, including several great free applications for the BlackBerry. All these applications work well. The two most popular are Pandora and Slacker Radio, both of which you can find on the BlackBerry App World site. Just set up your account, specify the type of music you like and you should be Streaming Internet Radio in minutes.

If the optimizer uses these noworkload statistics, it takes the preceding values, the db_block_size, and the db_file_multiblock_read_count, and synthesizes some values for the sreadtim, mreadtim, and MBRC. MBRC is set to the actual value of db_file_multiblock_read_count. sreadtim is set to ioseektim + db_block_size/iotrfrspeed. mreadtim is set to ioseektim + db_file_multiblock_read_count * db_block_size/ iotftspeed. In other words, a read request takes one seek and then however many milliseconds of transfer to shift the volume of data off disk. Using the preceding example with an 8KB block size and a multiblock read of 8, the optimizer would set the sreadtim to 10 + 8192/4096 = 12 ms, and mreadtim to 10 + 8 * 8192/4096 = 26 ms. Once these values have been synthesized (the values are not stored back into the aux_stats$ table), the rest of the calculation proceeds as previously discussed. But, inevitably, there are complications for example, what happens when you change the db_file_multiblock_ read_count Table 2-3 compares the effect of noworkload system statistics with normal system statistics and traditional costing for different values of db_file_multiblock_read_count (see script tablescan_03.sql in the online code suite). This example uses the same 10,000 row table of my first example, with one row per block. For the standard cpu_costing figures, I have deliberately set the MBRC, sreadtim, and mreadtim to mimic the values derived from the noworkload statistics.