diff options
Diffstat (limited to 'host/docs')
| -rw-r--r-- | host/docs/build.rst | 6 | ||||
| -rw-r--r-- | host/docs/general.rst | 8 | ||||
| -rw-r--r-- | host/docs/usrp2.rst | 30 |
3 files changed, 25 insertions, 19 deletions
diff --git a/host/docs/build.rst b/host/docs/build.rst index f5a8dac8d..108d8dc8b 100644 --- a/host/docs/build.rst +++ b/host/docs/build.rst @@ -97,7 +97,10 @@ Generate Makefiles with cmake cd build cmake ../ -For a custom prefix, use: cmake -DCMAKE_INSTALL_PREFIX=<prefix> ../ +**Notes:** + +* For a custom prefix, use: cmake -DCMAKE_INSTALL_PREFIX=<prefix> ../ +* On some Fedora 64-bit systems, cmake has trouble finding boost, use: cmake -DBOOST_LIBRARYDIR=/usr/lib64 ../ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Build and install @@ -138,6 +141,7 @@ Generate the project with cmake Build the project in MSVC ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ * Open the generated project file in MSVC. +* Change the build type from "Debug" to "Release". * Select the build all target, right click, and choose build. * Select the install target, right click, and choose build. diff --git a/host/docs/general.rst b/host/docs/general.rst index 7d1f467a0..6b309cba0 100644 --- a/host/docs/general.rst +++ b/host/docs/general.rst @@ -58,14 +58,12 @@ Misc notes ------------------------------------------------------------------------ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Process scheduling +Thread priority scheduling ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -The UHD will try to automatically boost the process's scheduling priority. -Currently, this is only supported on platforms with *sched.h*. - +When the UHD spawns a new thread it may try to boost the thread's scheduling priority. When setting the priority fails, the UHD prints out an error. -This error is harmless, it simply means that your process will have a normal scheduling priority. +This error is harmless, it simply means that the thread will have a normal scheduling priority. **Linux Notes:** diff --git a/host/docs/usrp2.rst b/host/docs/usrp2.rst index 1bd95cefa..aff0d0454 100644 --- a/host/docs/usrp2.rst +++ b/host/docs/usrp2.rst @@ -20,7 +20,7 @@ Run the following commands: :: cd <uhd-repo-path>/fpga/usrp2/top/u2_rev3 - make bin + make -f Makefile.udp bin *The image file will be ./build/u2_rev3.bin* @@ -158,10 +158,25 @@ buffer incoming samples faster than they can be processed. However, if you application cannot process samples fast enough, no amount of buffering can save you. +By default, the UHD will try to request a reasonably large buffer size for both send and receive. +A warning will be printed on instantiation if the actual buffer size is insufficient. +See the OS specific notes below: + +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +OS specific notes +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +On linux, the maximum buffer sizes are capped by the sysctl values +**net.core.rmem_max** and **net.core.wmem_max**. +To change the maximum values, run the following commands: +:: + + sudo sysctl -w net.core.rmem_max=<new value> + sudo sysctl -w net.core.wmem_max=<new value> + ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Device address params ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -To set the size of the buffers, +To manually set the size of the buffers, the usrp2 will accept two optional parameters in the device address. Each parameter will accept a numeric value for the number of bytes. @@ -172,14 +187,3 @@ Example, set the args string to the following: :: addr=192.168.10.2, recv_buff_size=100e6 - -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -OS specific notes -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -On linux, the maximum buffer sizes are capped by the sysctl values -**net.core.rmem_max** and **net.core.wmem_max**. -To change the maximum values, run the following commands: -:: - - sudo sysctl -w net.core.rmem_max=<new value> - sudo sysctl -w net.core.wmem_max=<new value> |