Thanks, Florin! I tried, but unfortunately got segment fault like
below(pull from master today):
The segfault caused by the mq=0x204005440, the addr could not be refered in
APP side, looks like the address is alloc in segment_manager_init L293,
I used the example vcl.conf you provided, just comments the line
"api-socket-name /run/vpp-api.sock".
==================================
VCL<23469>: configured VCL debug level (4) from VCL_DEBUG!
VCL<23469>: allocated VCL heap = 0x7fffe0000010, size 268435456 (0x10000000)
VCL<23469>: configured app_scope_local (1)
VCL<23469>: configured app_scope_global (1)
VCL<23469>: configured with mq with eventfd
VCL<23469>: completed parsing vppcom config!
vppcom_connect_to_vpp:803: VCL<23469>: app (ldp-23469-app) connecting to
VPP api (/vpe-api)...
[New Thread 0x7fffdffff700 (LWP 23474)]
vppcom_connect_to_vpp:819: VCL<23469>: app (ldp-23469-app) is connected to
VPP!
[New Thread 0x7fffdf7fe700 (LWP 23475)]
vppcom_app_create:714: VCL<23469>: sending session enable
vppcom_app_create:724: VCL<23469>: sending app attach
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffdffff700 (LWP 23474)]
0x00007ffff510a403 in svm_msg_q_set_consumer_eventfd (mq=0x204005440, fd=0)
at /home/wenjiang/vpp/build-data/../src/svm/message_queue.c:242
242 mq->q->consumer_evtfd = fd;
Missing separate debuginfos, use: debuginfo-install dpdk-18.05-1.x86_64
libgcc-4.8.5-28.el7_5.1.x86_64 libstdc++-4.8.5-28.el7_5.1.x86_64
numactl-libs-2.0.9-7.el7.x86_64
(gdb) bt
#0 0x00007ffff510a403 in svm_msg_q_set_consumer_eventfd (mq=0x204005440,
fd=0) at /home/wenjiang/vpp/build-data/../src/svm/message_queue.c:242
#1 0x00007ffff4fede84 in vl_api_application_attach_reply_t_handler
(mp=0x30066c40) at /home/wenjiang/vpp/build-data/../src/vcl/vcl_bapi.c:119
#2 0x00007ffff5111bba in msg_handler_internal (am=0x7ffff5360880
<api_main>, the_msg=0x30066c40, trace_it=0, do_it=1, free_it=1) at
/home/wenjiang/vpp/build-data/../src/vlibapi/api_shared.c:425
#3 0x00007ffff5111e1a in vl_msg_api_handler (the_msg=0x30066c40) at
/home/wenjiang/vpp/build-data/../src/vlibapi/api_shared.c:551
#4 0x00007ffff5113344 in vl_msg_api_queue_handler (q=0x30207ec0) at
/home/wenjiang/vpp/build-data/../src/vlibapi/api_shared.c:762
#5 0x00007ffff5117f4e in rx_thread_fn (arg=0x0) at
/home/wenjiang/vpp/build-data/../src/vlibmemory/memory_client.c:94
#6 0x00007ffff763ce25 in start_thread (arg=0x7fffdffff700) at
pthread_create.c:308
#7 0x00007ffff715ebad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
============================
startup.conf
root@192.168.122.252:/home/wenjiang/dmm/release/bin (master) $ cat
~/startup.conf
unix {
#nodaemon
interactive
log /var/log/vpp/vpp.log
cli-listen localhost:5002
full-coredump
}
api-trace {
on
}
dpdk {
socket-mem 1024
dev 0000:00:09.0
}
session { evt_qs_memfd_seg }
#socksvr { socket-name /run/vpp-api.sock }
==================================
root@192.168.122.252:/home/wenjiang/dmm/release/bin (master) $ cat
/etc/vpp/vcl.conf
vcl {
#rx-fifo-size 4000000
#tx-fifo-size 4000000
app-scope-local
app-scope-global
#api-socket-name /run/vpp-api.sock
use-mq-eventfd
}
Florin Coras <fcoras.li...@gmail.com> 于2018年8月14日周二 下午11:15写道：
> Hi Yalei,
>
> You have an example of how to write a vcl.conf file in vcl/vcl_test.conf.
> It’s just an example, so if you want to try out eventfd, here’s what I’ve
> been recently using:
>
> vcl {
> rx-fifo-size 4000000
> tx-fifo-size 4000000
> app-scope-local
> app-scope-global
> api-socket-name /run/vpp-api.sock
> use-mq-eventfd
> }
>
> For this to work, vpp must come up with the binary api socket transport
> configured and the session layer event queues must be allocated in a memfd
> segment. So, add the following to your vpp startup conf:
>
> socksvr { socket-name /run/vpp-api.sock }
> session { evt_qs_memfd_seg }
>
> Also, to have vcl read your config file, remember to do something like:
> "export VCL_CONFIG=/path/to/your/file”. Finally, this is still very much
> ongoing work so if you hit any issues, do let me know :-)
>
> Hope this helps,
> Florin
>
> > On Aug 14, 2018, at 5:38 AM, 汪亚雷 <wyland...@gmail.com> wrote:
> >
> > Hi Florin,
> >
> > vppcom_cfg_read_file will try to parse the vcl.conf, but where could I
> get the example?
> >
> > actually I want to have a try "use-mq-eventfd"
> >
> > Thanks!
> >
> > /yalei
>
>
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