do performance test, support 2.7kclient, 500kbps

@@ -367,8 +367,9 @@ Supported operating systems and hardware:
 ## Performance
 ## Performance
 
 
 Performance benchmark history:
 Performance benchmark history:
-* 2014-07-12, SRS 0.9.156, virtual box, virtual box, 1800 clients, 68%CPU, 38MB
-* 2013-11-28, [SRS 0.5.0](https://github.com/winlinvip/simple-rtmp-server/commit/023e23bc8261bec15a70a7ae932098fb4f82b679), virtual box, 1800 clients, 90%CPU, 41MB
+* 2014-07-12, SRS 0.9.156, virtual box, virtual box, 2700 clients, 89%CPU, 61MB
+* 2014-07-12, [SRS 0.9.156, virtual box, virtual box, 1800 clients, 68%CPU, 38MB](https://github.com/winlinvip/simple-rtmp-server/commit/e2d273f4939348374bf9644df9d54c4293b39c1a)
+* 2013-11-28, [SRS 0.5.0, virtual box, 1800 clients, 90%CPU, 41MB](https://github.com/winlinvip/simple-rtmp-server/commit/023e23bc8261bec15a70a7ae932098fb4f82b679)
 
 
 1.  300 connections,  150Mbps, 500kbps, CPU 5.7%, MEM 9208KB.
 1.  300 connections,  150Mbps, 500kbps, CPU 5.7%, MEM 9208KB.
 1.  600 connections,  300Mbps, 500kbps, CPU 18.3%, MEM 13MB.
 1.  600 connections,  300Mbps, 500kbps, CPU 18.3%, MEM 13MB.
@@ -376,20 +377,23 @@ Performance benchmark history:
 1. 1200 connections,  600Mbps, 500kbps, CPU 43.9%, MEM 26MB.
 1. 1200 connections,  600Mbps, 500kbps, CPU 43.9%, MEM 26MB.
 1. 1500 connections,  750Mbps, 500kbps, CPU 55.2%, MEM 32MB.
 1. 1500 connections,  750Mbps, 500kbps, CPU 55.2%, MEM 32MB.
 1. 1800 connections,  900Mbps, 500kbps, CPU 68.8%, MEM 38MB.
 1. 1800 connections,  900Mbps, 500kbps, CPU 68.8%, MEM 38MB.
+1. 2100 connections, 1050Mbps, 500kbps, CPU 75.7%, MEM 46MB.
+1. 2400 connections, 1200Mbps, 500kbps, CPU 83.7%, MEM 54MB.
+1. 2700 connections, 1350Mbps, 500kbps, CPU 89.9%, MEM 61MB.
 
 
 <pre>
 <pre>
 [winlin@dev6 srs]$ dstat
 [winlin@dev6 srs]$ dstat
 ----total-cpu-usage---- -dsk/total- ---net/lo-- ---paging-- ---system--
 ----total-cpu-usage---- -dsk/total- ---net/lo-- ---paging-- ---system--
 usr sys idl wai hiq siq| read  writ| recv  send|  in   out | int   csw 
 usr sys idl wai hiq siq| read  writ| recv  send|  in   out | int   csw 
- 20  12  57   0   0  10|   0  2048B| 101M  101M|   0     0 |3487  1299 
- 22  14  52   0   0  12|   0   273B| 137M  137M|   0     0 |3301   954 
- 27  17  43   0   0  14|   0   819B| 126M  126M|   0     0 |3221   817 
- 22  13  54   0   0  11|   0   137B| 119M  119M|   0     0 |3292   964 
- 22  13  55   0   0  10|   0  3413B| 125M  125M|   0     0 |3410  1127 
- 24  13  52   0   0  11|   0  1502B| 124M  124M|   0     0 |3868  2028 
- 24  14  50   0   0  13|   0  3140B| 116M  116M|   0     0 |4009  2266 
- 24  14  50   0   0  13|   0  1502B| 110M  110M|   0     0 |3959  2206 
- 23  14  52   0   0  12|   0  2048B| 138M  138M|   0     0 |3832  1873 
+ 29  17  39   0   0  15|   0  5325B| 163M  163M|   0     0 |4331  3386 
+ 30  16  38   0   0  16|   0  5325B| 160M  160M|   0     0 |4252  3332 
+ 30  15  37   0   0  17|   0  7646B| 169M  169M|   0     0 |4015  2886 
+ 30  17  36   0   0  17|   0  1638B| 197M  197M|   0     0 |4021  3037 
+ 31  17  35   0   0  17|   0   410B| 204M  204M|   0     0 |4181  3243 
+ 33  17  32   0   0  18|   0  2185B| 191M  191M|   0     0 |4305  3592 
+ 31  15  36   0   0  18|   0  1229B| 127M  127M|   0     0 |4446  3822 
+ 34  18  30   0   0  18|   0     0 | 231M  231M|   0     0 |4461  3691 
+ 32  17  33   0   0  18|   0   410B| 169M  169M|   0     0 |4518  3788 
 </pre>
 </pre>
 
 
 * See also: [Performance for x86/x64 Test Guide](https://github.com/winlinvip/simple-rtmp-server/wiki/Performance)
 * See also: [Performance for x86/x64 Test Guide](https://github.com/winlinvip/simple-rtmp-server/wiki/Performance)