Date: Sat, 22 Jul 2017 10:05:29 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Eugene Grosbein <eugen@grosbein.net> Cc: Don Lewis <truckman@FreeBSD.org>, pz-freebsd-stable@ziemba.us, freebsd-stable@FreeBSD.org Subject: Re: stable/11 r321349 crashing immediately Message-ID: <20170722070529.GP1935@kib.kiev.ua> In-Reply-To: <5972E7C5.6070102@grosbein.net> References: <201707220542.v6M5ggtP052112@gw.catspoiler.org> <5972E7C5.6070102@grosbein.net>
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On Sat, Jul 22, 2017 at 12:51:01PM +0700, Eugene Grosbein wrote: > Also, there is https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219476 I strongly disagree with the idea of increasing the default kernel stack size, it will cause systematic problems for all users instead of current state where some workloads are problematic. Finding contig KVA ranges for larger stacks on KVA-starved architectures is not going to work. The real solution is to move allocations from stack to heap, one by one. You claimed that vm/vm_object.o consumes 1.5K of stack, can you show the ddb backtrace of this situation ?
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