Tested-by: Yong Liu <yong.liu at intel.com>
- Tested Commit: 1ab07743b21b785a71fa334641ab58e779532600
- OS: Fedora20 3.15.8-200.fc20.x86_64
- GCC: gcc version 4.8.3 20140624
- CPU: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz
- NIC: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection
[8086:10fb]
- Default x86_64-native-linuxapp-gcc configuration
- Total 2 cases, 2 passed, 0 failed
- Case: Continuous Mode Performance
Description: Measure continous mode cycles/packet in NIC loopback mode
Command / instruction:
Start sample test application.
./app/test/test -n 1 -c ffff
Set stream control mode to continuous
RTE>>set_rxtx_sc continuous
Choose rx/tx pair between vector|scalar|full|hybrid
RTE>>set_rxtx_mode vector
Choose the area of measurement
RTE>>set_rxtx_anchor rxtx
Start pmd performance measurement
RTE>>pmd_perf_autotest
Expected test result:
Test result is OK and output cycle number for each packet.
- Case: Burst Mode Performance
Description: Measure burst mode cycles/packet in NIC loopback mode
Command / instruction:
Start sample test application.
./app/test/test -n 1 -c ffff
Set stream control mode to poll_before_xmit or poll_after_xmit.
RTE>>set_rxtx_sc poll_before_xmit
Start pmd performance measurement
RTE>>pmd_perf_autotest
Expected test result:
Test result is OK and output cycle number for each packet.
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Cunming Liang
> Sent: Monday, October 27, 2014 9:20 AM
> To: dev at dpdk.org
> Subject: [dpdk-dev] [PATCH v6 0/3] app/test: unit test to measure cycles per
> packet
>
> v6 update:
> # leave FUNC_PTR_OR_*_RET unmodified
>
> v5 update:
> # fix the confusing of retval in some API of rte_ethdev
>
> v4 ignore
>
> v3 update:
> # Codes refine according to the feedback.
> 1. add ether_format_addr to rte_ether.h
> 2. fix typo in code comments.
> 3. %lu to %PRIu64, fixing 32-bit targets compilation err
> # merge 2 small incremental patches to the first one.
> The whole unit test as a single patch in [PATCH v3 2/2]
> # rebase code to the latest master
>
> v2 update:
> Rebase code to the latest master branch.
>
> It provides unit test to measure cycles/packet in NIC loopback mode.
> It simply gives the average cycles of IO used per packet without test
> equipment.
> When doing the test, make sure the link is UP.
>
> There's two stream control mode support, one is continues, another is burst.
> The former continues to forward the injected packets until reaching a certain
> amount of number.
> The latter one stop when all the injected packets are received.
> In burst stream, now measure two situations, with or without desc. cache
> conflict.
> By default, it runs in continues stream mode to measure the whole rxtx.
>
> Usage Example:
> 1. Run unit test app in interactive mode
> app/test -c f -n 4 -- -i
> 2. Set stream control mode, by default is continuous
> set_rxtx_sc [continuous|poll_before_xmit|poll_after_xmit]
> 3. If choose continuous stream, there are another two options can configure
> 3.1 choose rx/tx pair, default is vector
> set_rxtx_mode [vector|scalar|full|hybrid]
> Note: To get acurate scalar fast, plz choose 'vector' or 'hybrid'
> without
> INC_VEC=y in config
> 3.2 choose the area of masurement, default is rxtx
> set_rxtx_anchor [rxtx|rxonly|txonly]
> 4. Run and wait for the result
> pmd_perf_autotest
>
> For who simply just want to see how much cycles cost per packet.
> Compile DPDK, Run 'app/test', and type 'pmd_perf_autotest', that's it.
> Nothing else needs to configure.
> Using other options when you understand and what to measures more.
>
>
> BTW, [1/3] is the same patch as below one.
> http://dpdk.org/dev/patchwork/patch/817
>
> *** BLURB HERE ***
>
> Cunming Liang (3):
> app/test: allow to create packets in different sizes
> app/test: measure the cost of rx/tx routines by cycle number
> ethdev: fix wrong error return refere to API definition
>
> app/test/Makefile | 1 +
> app/test/commands.c | 111 +++++
> app/test/packet_burst_generator.c | 26 +-
> app/test/packet_burst_generator.h | 11 +-
> app/test/test.h | 6 +
> app/test/test_link_bonding.c | 39 +-
> app/test/test_pmd_perf.c | 922
> +++++++++++++++++++++++++++++++++++
> lib/librte_ether/rte_ethdev.c | 6 +-
> lib/librte_ether/rte_ether.h | 25 +
> lib/librte_pmd_ixgbe/ixgbe_ethdev.c | 6 +
> 10 files changed, 1117 insertions(+), 36 deletions(-)
> create mode 100644 app/test/test_pmd_perf.c
>
> --
> 1.7.4.1
