add mw sleep time and msgs/iovs table.

@@ -727,7 +727,8 @@ The play benchmark by [st-load](https://github.com/winlinvip/st-load):
 * 2014-11-12, SRS 2.0.14,  3.5k(3500)clients, 95%CPU, 78MB. [commit](https://github.com/winlinvip/simple-rtmp-server/commit/8acd143a7a152885b815999162660fd4e7a3f247)
 * 2014-11-13, SRS 2.0.15,  6.0k(6000)clients, 82%CPU, 203MB. [commit](https://github.com/winlinvip/simple-rtmp-server/commit/cc6aca9ad55342a06440ce7f3b38453776b2b2d1)
 * 2014-11-22, SRS 2.0.30,  7.5k(7500)clients, 87%CPU, 320MB. [commit](https://github.com/winlinvip/simple-rtmp-server/commit/58136ec178e3d47db6c90a59875d7e40946936e5)
-* 2014-12-05, SRS 2.0.55,  8.0k(8000)clients, 89%CPU, 360MB. (mw_sleep=1800)[commit](https://github.com/winlinvip/simple-rtmp-server/commit/58136ec178e3d47db6c90a59875d7e40946936e5)
+* 2014-12-05, SRS 2.0.55,  8.0k(8000)clients, 89%CPU, 360MB. (mw_sleep=350)[commit](https://github.com/winlinvip/simple-rtmp-server/commit/58136ec178e3d47db6c90a59875d7e40946936e5)
+* 2014-12-05, SRS 2.0.57,  9.0k(9000)clients, 92%CPU, 410MB. [commit](https://github.com/winlinvip/simple-rtmp-server/commit/9ee138746f83adc26f0e236ec017f4d68a300004)
 
 ### Publish benchmark
 
@@ -741,7 +742,7 @@ The publish benchmark by [st-load](https://github.com/winlinvip/st-load):
 * 2014-12-04, SRS 2.0.49,  1.4k(1400) publishers, 68%CPU, 144MB.
 * 2014-12-04, SRS 2.0.49,  2.5k(2500) publishers, 95%CPU, 404MB. [commit](https://github.com/winlinvip/simple-rtmp-server/commit/29324fab469e0f7cef9ad04ffdbce832ac7dd9ff)
 * 2014-12-04, SRS 2.0.51,  2.5k(2500) publishers, 91%CPU, 259MB. [commit](https://github.com/winlinvip/simple-rtmp-server/commit/f57801eb46c16755b173984b915a4166922df6a6)
-* 2014-12-04, SRS 2.0.52,  4.0k(4000) publishers, 80%CPU, 331MB. (mr_sleep=2000)[commit](https://github.com/winlinvip/simple-rtmp-server/commit/5589b13d2e216b91f97afb78ee0c011b2fccf7da)
+* 2014-12-04, SRS 2.0.52,  4.0k(4000) publishers, 80%CPU, 331MB. (mr_sleep=350)[commit](https://github.com/winlinvip/simple-rtmp-server/commit/5589b13d2e216b91f97afb78ee0c011b2fccf7da)
 
 ## Architecture
 

@@ -89,25 +89,25 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *       1400            120         240
 *       1500            119         238
 *       1600            131         262
-*       1700            
-*       1800            
-*       1900            
-*       2000            
+*       1700            131         262
+*       1800            133         266
+*       1900            141         282
+*       2000            150         300
 */
 // the default config of mw.
 #define SRS_PERF_MW_SLEEP 350
 /**
 * how many msgs can be send entirely.
 * for play clients to get msgs then totally send out.
-* for the mw sleep set to 1800, the msgs is about 128.
-* @remark, recomment to 156.
+* for the mw sleep set to 1800, the msgs is about 133.
+* @remark, recomment to 256.
 */
-#define SRS_PERF_MW_MSGS 156
+#define SRS_PERF_MW_MSGS 256
 /**
 * how many msgs atleast to send.
-* @remark, recomment to 8.
+* @remark, recomment to 32.
 */
-#define SRS_PERF_MW_MIN_MSGS 8
+#define SRS_PERF_MW_MIN_MSGS 32
 
 /**
 * how many chunk stream to cache, [0, N].