His output is from the stdio console; it's the vppctl session that causes a 
trigger to be loaded.

Chris.

-----Original Message-----
From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Ray Kinsella
Sent: Thursday, July 11, 2019 06:42
To: dbar...@cisco.com; Yusuke Tatsumi <ytats...@yahoo-corp.jp>; 
vpp-dev@lists.fd.io
Subject: [EXTERNAL] Re: [vpp-dev] vppctl makes VPP hang-up occasionally

Good work

Bit confused - if we are waiting for a timer to trigger here to display a 
welcome and show a prompt.

How does Tatsumi have a prompt in the first place, to type the initial command?

My understanding is the initial memory allocation is happening in response to 
Tatsumi (or anyone) typing in a command.

Ray K

On 09/07/2019 13:05, Dave Barach via Lists.Fd.Io wrote:
> The root cause is obvious from the backtrace in VPP-1711: memory 
> allocator takes a spin-lock, timer interrupt fires, back into the 
> memory allocator, deadlock.
> 
>  
> 
> The [sic] timer interrupt function in .../src/vppinfra/timers.c is a 
> mistake. You managed to find the only place in all of vpp which uses it.
> 
>  
> 
> As a quick 1-line workaround, comment out the “timer_call” shown 
> below, around line 2837 in .../src/vlib/unix/cli.c, e.g. by adding an 
> “if(0)”...
> 
>  
> 
>      /* In case the client doesn't negotiate terminal type, use
> 
>       * a timer to kick off the initial prompt. */
> 
>       if (0)
> 
>       timer_call (unix_cli_file_welcome_timer, cf_index, 1);
> 
>  
> 
> HTH... Dave
> 
>  
> 
> *From:*vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> *On Behalf Of *Yusuke 
> Tatsumi
> *Sent:* Tuesday, July 9, 2019 1:11 AM
> *To:* vpp-dev@lists.fd.io
> *Subject:* [vpp-dev] vppctl makes VPP hang-up occasionally
> 
>  
> 
> Hi all,
> 
>  
> 
> We found that VPP itself freeze once a day under using "vppctl" 
> command repeatedly.
> 
> I think this is a kind of spin-lock problem but I can't understand the 
> root cause.
> 
> See here for details.
> 
> https://jira.fd.io/browse/VPP-1711
> 
>  
> 
> If this goes on, It's hard to operate VPP as production service. So I 
> need help to fix this issue.
> 
> Could anyone help/suggest to this issue?
> 
>  
> 
> Thanks,
> 
> Tatsumi.
> 
>  
> 
> —
> 
> 立見祐介
> 
> ヤフー株式会社
> 
> テクノロジーグループ システム統括本部クラウドプラットフォーム本部技術1
> 部 コンピュート
> 
> TEL: 03-6898-3081
> 
> mail: ytats...@yahoo-corp.jp <mailto:ytats...@yahoo-corp.jp>
> 
>  
> 
> —
> 
> Yusuke Tatsumi
> 
> Compute team,
> 
> Cloud Platform Division,
> 
> System Management Group
> 
> Yahoo Japan Corporation
> 
> Direct: +81 (3) 6898 3081
> 
> mail: ytats...@yahoo-corp.jp <mailto:ytats...@yahoo-corp.jp>
> 
>  
> 
> 
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