On 9/8/18 3:43 PM, Konstantin Belousov wrote: > On Sat, Sep 08, 2018 at 02:07:41PM -0400, Michael Butler wrote: >> On 8/31/18 1:28 AM, Konstantin Belousov wrote: >>> On Fri, Aug 31, 2018 at 12:21:02AM -0400, Michael Butler wrote: >> >> [ .. snip .. ] >> >>>> I see another problem after using Ian's workaround of moving the #ifdef >>>> SMP; it seems I now run out of kernel stack on an i386 (Pentium-III) >>>> machine with only 512MB of RAM: >>>> >>>> Aug 29 23:29:19 sarah kernel: vm_thread_new: kstack allocation failed >>>> Aug 29 23:29:26 sarah kernel: vm_thread_new: kstack allocation failed >>>> Aug 29 23:29:30 sarah kernel: vm_thread_new: kstack allocation failed >>>> Aug 29 23:29:38 sarah kernel: vm_thread_new: kstack allocation failed >>>> Aug 29 23:29:38 sarah kernel: vm_thread_new: kstack allocation failed >>>> Aug 29 23:29:40 sarah kernel: vm_thread_new: kstack allocation failed >>> >>> What is the kernel revision for "now". What was the previous revision >>> where the kstack allocation failures did not happen. >>> >>> Also, what is the workload ? >> >> Sorry for the delay. Any version at or after SVN r338360 would either a) >> not boot at all or b) crash shortly after boot with a swarm of messages >> as above. It was stable before that. >> >> Unfortunately, this machine is remote and, being as old as it is, has no >> remote console facility. 'nextboot' has been my savior ;-) >> >> It is a 700MHz Pentium-III with 512MB of RAM and has 3 used interfaces, >> local ethernet (FXP), GIF for an IPv6 tunnel to HE and TAP for an >> OpenVPN endpoint. It has IPFW compiled into the kernel and acts as a >> router/firewall with few actual applications running. >> >> As another data point, I manually reversed both SVN r338360 and r338415 >> (a related change) and it is now stable running at SVN r338520, > > It is very unprobable. I do not see how could r338360 affect KVA allocation. > Double-check that you booted right kernels. > FreeBSD sarah.protected-networks.net 12.0-ALPHA5 FreeBSD 12.0-ALPHA5 #14 r338520M: Thu Sep 6 21:35:31 EDT 2018 'svn diff' reports the only changes being the two reversals I noted above, imbReceived on Sat Sep 08 2018 - 18:45:01 UTC
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