Date: Sat, 17 Sep 2016 19:32:37 +0300 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: hiren panchasara <hiren@strugglingcoder.info> Cc: Konstantin Belousov <kostikbel@gmail.com>, jch@FreeBSD.org, freebsd-stable@FreeBSD.org Subject: Re: 11.0 stuck on high network load Message-ID: <20160917163237.GD2960@zxy.spb.ru> In-Reply-To: <20160916214849.GS9397@strugglingcoder.info> References: <20160914213503.GJ2840@zxy.spb.ru> <20160915085938.GN38409@kib.kiev.ua> <20160915090633.GS2840@zxy.spb.ru> <20160916181839.GC2960@zxy.spb.ru> <20160916183053.GL9397@strugglingcoder.info> <20160916190330.GG2840@zxy.spb.ru> <20160916191155.GM9397@strugglingcoder.info> <20160916203057.GH2840@zxy.spb.ru> <20160916214646.GR9397@strugglingcoder.info> <20160916214849.GS9397@strugglingcoder.info>
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On Fri, Sep 16, 2016 at 02:48:49PM -0700, hiren panchasara wrote: > On 09/16/16 at 02:46P, hiren panchasara wrote: > > On 09/16/16 at 11:30P, Slawa Olhovchenkov wrote: > > > On Fri, Sep 16, 2016 at 12:11:55PM -0700, hiren panchasara wrote: > > > > > > > > > > > As I suspected, this looks like a hang trying to lock V_tcbinfo. > > > > > > > > I'm ccing Julien here who worked on WLOCK -> RLOCK transition to improve > > > > performance for short-lived connections. I am not too sure if thats the > > > > problem but looks in similar area so he may be able to provide some > > > > insights. > > > > > > No, this is other case. In may case at this time no network traffic > > > more then hour. This is some sore of deadlock or like. > > > > In my limited understanding, such deadlock like situation can occur > > without traffic too. > > Err, I meant to say light traffic. I am point again -- I am dont have traffic totaly. Absolytly no traffic
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