[dpdk-dev] Memory issues seen while running pktgen with DPDK sample application

Wiles, Keith keith.wiles at intel.com
Sun Mar 8 23:13:58 CET 2015
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On 3/8/15, 5:11 PM, "Wiles, Keith" <keith.wiles at intel.com> wrote:

>Hi Shankari,
>
>Please show the command lines you are using for the two applications.

Sorry, you did show the command lines.
>
>
>
>On 3/8/15, 11:10 AM, "Shankari Vaidyalingam" <shankari.v2k6 at gmail.com>
>wrote:
>
>>Hi,
>>
>>I'm trying to send packets from pktgen to exception path sample
>>application.
>>My configuration is like this:
>>
>>|------Terminal 1-------                      -------Terminal
>>2------------
>>|                           |                      |
>>          |
>>|  Pktgen               |------>  NIC port 0 --|--->tap0 --> Appln
>>--->tap1|
>>|                           |
>>|---------------------------------|
>>|-----------------------
>>Tried the following but getting an error with memory fault:
>>
>>
>>Pktgen: Started this first
>>Exception path sample application: When I started this I got the error:
>>Please let me know how to resolve this error:
>>
>>>>>>>>>>
>>
>>sudo ./build/exceptiopath -c 0x03 -n 2 -- -p 0x01 -i 2 -o 1
>>[sudo] password for controller:
>>EAL: Detected lcore 0 as core 0 on socket 0
>>EAL: Detected lcore 1 as core 1 on socket 0
>>EAL: Support maximum 64 logical core(s) by configuration.
>>EAL: Detected 2 lcore(s)
>>EAL: No free hugepages reported in hugepages-2048kB
>>PANIC in rte_eal_init():
>>Cannot get hugepage information
>>6: [./build/exception_path() [0x418cc5]]
>>5: [/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)
>>[0x7fda2c77976d]]
>>4: [./build/exception_path(main+0x39) [0x4183e9]]
>>3: [./build/exception_path(rte_eal_init+0x10ac) [0x45f8ac]]
>>2: [./build/exception_path(__rte_panic+0xc1) [0x41824a]]
>>1: [./build/exception_path(rte_dump_stack+0x23) [0x466013]]
>>
>>>>>>>>>>
>>
>>Then I tried the following steps
>>
>>(2) Started the sample path application first
>>Pktgen next I got the below error:
>>
>>  Pktgen created by: Keith Wiles -- >>> Powered by Intel® DPDK <<<
>>-----------------------
>>EAL: Detected lcore 0 as core 0 on socket 0
>>EAL: Detected lcore 1 as core 1 on socket 0
>>EAL: Support maximum 64 logical core(s) by configuration.
>>EAL: Detected 2 lcore(s)
>>EAL: No free hugepages reported in hugepages-2048kB
>>PANIC in rte_eal_init():
>>Cannot get hugepage information
>>6: [./app/build/pktgen() [0x422ba5]]
>>5: [/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)
>>[0x7fb46e0b476d]]
>>4: [./app/build/pktgen(main+0x116) [0x422286]]
>>3: [./app/build/pktgen(rte_eal_init+0x10ac) [0x4ac4dc]]
>>2: [./app/build/pktgen(__rte_panic+0xc1) [0x422007]]
>>1: [./app/build/pktgen(rte_dump_stack+0x23) [0x4b2c43]]
>>
>>(3) I tried specifying no of pages that both the pktgen and sample
>>application needs to take by specifying it in commandline in the EAL
>>options:
>>But that also didnt work:
>>
>>EAL: Virtual area found at 0x7fcff6200000 (size = 0x200000)
>>EAL: Not enough memory available on socket 1! Requested: 128MB,
>>available:
>>0MB
>>PANIC in rte_eal_init():
>>Cannot init memory
>>6: [./build/exception_path() [0x418cc5]]
>>5: [/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)
>>[0x7fd0790f876d]]
>>4: [./build/exception_path(main+0x39) [0x4183e9]]
>>3: [./build/exception_path(rte_eal_init+0x1808) [0x460008]]
>>2: [./build/exception_path(__rte_panic+0xc1) [0x41824a]]
>>1: [./build/exception_path(rte_dump_stack+0x23) [0x466013]]
>>
>>(4) Then I went forward to edit the no of hugepages allocated in the
>>script
>>/etc/sysctl.conf and then
>>ran the setup.sh script under the tools dir to allocate hugepages for
>>each
>>separate application
>>
>>This time also I faced issues related to memory running out:
>>
>>HugePages:         0 kB
>>HugePages_Total:     256
>>HugePages_Free:      256
>>HugePages_Rsvd:        0
>>HugePages_Surp:        0
>>Hugepagesize:       2048 kB
>>
>>EAL: Requesting 256 pages of size 2MB from socket 0
>>EAL: TSC frequency is ~2689707 KHz
>>EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using
>>unreliable
>>clock cycles !
>>EAL: Master core 0 is ready (tid=4fd54800)
>>EAL: Core 1 is ready (tid=2c7fe700)
>>EAL: PCI device 0000:00:08.0 on NUMA socket -1
>>EAL:   probe driver: 8086:100f rte_em_pmd
>>EAL:   PCI memory mapped at 0x7f894fcfe000
>>EAL: PCI device 0000:00:09.0 on NUMA socket -1
>>EAL:   probe driver: 8086:100f rte_em_pmd
>>EAL:   PCI memory mapped at 0x7f894fcde000
>>EAL: PCI device 0000:00:0a.0 on NUMA socket -1
>>EAL:   probe driver: 8086:100f rte_em_pmd
>>EAL:   0000:00:0a.0 not managed by UIO driver, skipping
>>EAL: PCI device 0000:00:11.0 on NUMA socket -1
>>EAL:   probe driver: 8086:100f rte_em_pmd
>>EAL:   0000:00:11.0 not managed by UIO driver, skipping
>>EAL: PCI device 0000:00:0a.0 on NUMA socket -1
>>EAL:   probe driver: 8086:100f rte_em_pmd
>>EAL:   0000:00:0a.0 not managed by UIO driver, skipping
>>EAL: PCI device 0000:00:11.0 on NUMA socket -1
>>EAL:   probe driver: 8086:100f rte_em_pmd
>>EAL:   0000:00:11.0 not managed by UIO driver, skipping
>>APP: Initialising port 0 ...
>>
>>Checking link statusdone
>>Port 0 Link Up - speed 1000 Mbps - full-duplex
>>APP: Lcore 1 is reading from port 0 and writing to tap_dpdk_01
>>APP: Lcore 0 is reading from tap_dpdk_00 and writing to port 0
>>
>>Setting huge pages through execution of setup.sh:
>>
>>HugePages:         0 kB
>>HugePages_Total:     512
>>HugePages_Free:      256
>>HugePages_Rsvd:        0
>>HugePages_Surp:        0
>>Hugepagesize:       2048 kB
>>
>>Press enter to continue ...
>>
>>when pktgen is executed the output was:
>>
>> Pktgen created by: Keith Wiles -- >>> Powered by Intel® DPDK <<<
>>-----------------------
>>EAL: Detected lcore 0 as core 0 on socket 0
>>EAL: Detected lcore 1 as core 1 on socket 0
>>EAL: Support maximum 64 logical core(s) by configuration.
>>EAL: Detected 2 lcore(s)
>>EAL: Error - exiting with code: 1
>>  Cause: Cannot create lock on '/var/run/.rte_config'. Is another primary
>>process running?
>>
>>(5) >>>>>> Then I tried with the proc-type=auto to start the app as
>>secondary process and pktgen as primary process but it gave me the error:
>>
>>
>>>>>>>>>Pktgen was executing successfully
>>
>>Then I executed setup.sh to set the no of hugepages for pktgen
>>
>>HugePages:         0 kB
>>HugePages_Total:    1024
>>HugePages_Free:      512
>>HugePages_Rsvd:        0
>>HugePages_Surp:        0
>>Hugepagesize:       2048 kB
>>
>>Network devices using DPDK-compatible driver
>>============================================
>>0000:00:08.0 '82545EM Gigabit Ethernet Controller (Copper)' drv=igb_uio
>>unused=e1000
>>0000:00:09.0 '82545EM Gigabit Ethernet Controller (Copper)' drv=igb_uio
>>unused=e1000
>>
>>Network devices using kernel driver
>>===================================
>>0000:00:0a.0 '82545EM Gigabit Ethernet Controller (Copper)' if=eth4
>>drv=e1000 unused=igb_uio
>>0000:00:11.0 '82545EM Gigabit Ethernet Controller (Copper)' if=eth2
>>drv=e1000 unused=igb_uio *Active*
>>
>>Other network devices
>>=====================
>><none>
>>controller at controller-VirtualBox:~/dpdk-1.7.1/examples/exception_path$
>>sudo
>>./build/exception_path -c 0x03 -n 2 --proc-type=auto -- -p 0x01 -i 2 -o 1
>
>These are just examples and may not run as expected:
>./build/exception_path -c 0x03 -n 2 --proc-type auto --socket-mem 256,256
>--file-prefix ex -- -p 0x01 -i 2 -o 1
>./build/pktgen -c 0x1f0 -n 3 --proc-type auto --socket-mem 256,256
>--file-prefix pg -- -p 0x00c -P -m "[1:3].0, [2:4].1²
>
>You need to make sure you use
>	. different cores for each application.
>	. --proc-type auto on both, start one of the applications first to define
>it as the master.
>	. --file-prefix XXX to force DPDK to use different files in the /mnt/huge
>directories. The XXX is the file prefix say Œpg¹ for Pktgen and you could
>leave the option off the other other application, but I would add one like
>‹file-prefix ex
>	. --socket-mem X,Y to split up the memory for each application. If you
>have two sockets and 1024 huge pages allocated in the system then use
>--socket-mem 512,512 for each application. You can have one application
>with more or less then the other application. If you have one socket then
>--socket-mem X on one then --socket-mem Y on the other.
>	. split up the ports between the applications as well, it is not easy to
>share a port unless you want to design the applications as a true
>master/secondary processes.
>
>>EAL: Detected lcore 0 as core 0 on socket 0
>>EAL: Detected lcore 1 as core 1 on socket 0
>>EAL: Support maximum 64 logical core(s) by configuration.
>>EAL: Detected 2 lcore(s)
>>EAL: Auto-detected process type: SECONDARY
>>EAL: Setting up memory...
>>EAL: WARNING: Address Space Layout Randomization (ASLR) is enabled in the
>>kernel.
>>EAL:    This may cause issues with mapping memory into secondary
>>processes
>>EAL: Analysing 512 files
>>EAL: Could not open /mnt/huge/rtemap_256
>>PANIC in rte_eal_init():
>>Cannot init memory
>>6: [./build/exception_path() [0x418cc5]]
>>5: [/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)
>>[0x7fa570d0a76d]]
>>4: [./build/exception_path(main+0x39) [0x4183e9]]
>>3: [./build/exception_path(rte_eal_init+0x1808) [0x460008]]
>>2: [./build/exception_path(__rte_panic+0xc1) [0x41824a]]
>>1: [./build/exception_path(rte_dump_stack+0x23) [0x466013]]
>>
>>(7) Changed the code to have separate execution paths for primary and
>>secondary processes as per the multi
>>process application and then executed the code.
>>I also disabled ASLR temporarily to allow memory allocation for the
>>secondary process but still I face the below issue:
>>
>>controller at controller-VirtualBox:~/dpdk-1.7.1/examples/exception_path$
>>sudo
>>./build/exception_path -c 0x03 -n 2 --proc-type=auto -- -p 0x01 -i 2 -o 1
>>EAL: Detected lcore 0 as core 0 on socket 0
>>EAL: Detected lcore 1 as core 1 on socket 0
>>EAL: Support maximum 64 logical core(s) by configuration.
>>EAL: Detected 2 lcore(s)
>>EAL: Auto-detected process type: SECONDARY
>>EAL: Setting up memory...
>>EAL: WARNING: Address Space Layout Randomization (ASLR) is enabled in the
>>kernel.
>>EAL:    This may cause issues with mapping memory into secondary
>>processes
>>EAL: Analysing 512 files
>>EAL: Could not open /mnt/huge/rtemap_256
>>PANIC in rte_eal_init():
>>Cannot init memory
>>6: [./build/exception_path() [0x418cc5]]
>>5: [/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)
>>[0x7fa570d0a76d]]
>>4: [./build/exception_path(main+0x39) [0x4183e9]]
>>3: [./build/exception_path(rte_eal_init+0x1808) [0x460008]]
>>2: [./build/exception_path(__rte_panic+0xc1) [0x41824a]]
>>1: [./build/exception_path(rte_dump_stack+0x23) [0x466013]]
>>
>>=============================================================
>>
>>Contents of /etc/sysctl.conf in both the cases:
>>
>># Accept ICMP redirects only for gateways listed in our default
>># gateway list (enabled by default)
>># net.ipv4.conf.all.secure_redirects = 1
>>#
>># Do not send ICMP redirects (we are not a router)
>>#net.ipv4.conf.all.send_redirects = 0
>>#
>># Do not accept IP source route packets (we are not a router)
>>#net.ipv4.conf.all.accept_source_route = 0
>>#net.ipv6.conf.all.accept_source_route = 0
>>#
>># Log Martian Packets
>>#net.ipv4.conf.all.log_martians = 1
>>#
>>
>>vm.nr_hugepages=1024
>>
>>===================================================
>>
>>
>>Regards
>>Shankari.V
>
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