Date: Fri, 27 Mar 2020 19:25:45 -0700 From: Mark Millard <marklmi@yahoo.com> To: bob prohaska <fbsd@www.zefox.net> Cc: freebsd-arm@freebsd.org Subject: Re: Belated out of swap kill on rpi3 at r359216 Message-ID: <5549E63B-0784-4B58-AD36-2A2EDC518308@yahoo.com> In-Reply-To: <0A8CF8D1-8D0F-40E2-A10D-EB44BEEAB557@yahoo.com> References: <20200324155753.GA91922@www.zefox.net> <83E41A13-6C24-4B56-A837-779044038FBC@yahoo.com> <20200324185518.GA92311@www.zefox.net> <75CE3C07-8A0A-4D32-84C6-24BEA967447E@yahoo.com> <20200324224658.GA92726@www.zefox.net> <764D5A86-6A42-44E0-A706-F1C49BB198DA@yahoo.com> <20200325015633.GA93057@www.zefox.net> <0FF6BC4C-296F-49F3-8FB8-AA87A49349E2@yahoo.com> <20200326220649.GA99824@www.zefox.net> <0A8CF8D1-8D0F-40E2-A10D-EB44BEEAB557@yahoo.com>
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On 2020-Mar-26, at 16:24, Mark Millard <marklmi at yahoo.com> wrote:
> On 2020-Mar-26, at 15:06, bob prohaska <fbsd at www.zefox.net> wrote:
>
>> . . .
>
> Anyway, I may, for a time, have one context that is
> more like yours than is normal for me. As stands, the
> RPi3 is doing a from-scratch buildworld buildkernel .
> (Reconstructing the head -r358966 that it is already
> running.) It is not splitting the I/O load but is
> using a USB SSD (via a powered hub), not the microsd
> card. No extra logging. vm.pfault_oom_attempts=-1
> and vm.pageout_oom_seq=120 for this attempt. 3072
> MiBytes of page/swap space. It is a -j4 build attempt.
>
("No extra logging" meant: beyond my normal typescript
recording of the build output. That file ended up at
7741518 Bytes for size.)
The build completed without any /var/log/message or
console output during the build. My modified version
of top reported (details copied from a ssh window) . . .
For Mem: 738512Ki MaxObsActive, 190608Ki MaxObsWired, 906372Ki MaxObs(Act+Wir)
For Swap: 1927Mi MaxObsUsed
(top was started before the build. "MaxObs" is short
for "Maximum Observed".)
The build took a few minutes under 31 hrs.
(Ending: 2010-03-27:18:54:03
Starting: 2020-03-26:12:02:47).
Because it was rebuilding -r358966 that it was already
running, no bootstrap compiler or linker was built,
despite it being a from-scratch build: The system
compiler and linker were sufficient.
For reference: the details of what was specified for
building (contributes to "how long it took"). . .
# more ~/src.configs/src.conf.cortexA53-clang-bootstrap.aarch64-host
TO_TYPE=aarch64
#
KERNCONF=GENERIC-NODBG
TARGET=arm64
.if ${.MAKE.LEVEL} == 0
TARGET_ARCH=${TO_TYPE}
.export TARGET_ARCH
.endif
#
WITH_SYSTEM_COMPILER=
WITH_SYSTEM_LINKER=
#
WITH_LIBCPLUSPLUS=
WITHOUT_BINUTILS_BOOTSTRAP=
WITH_ELFTOOLCHAIN_BOOTSTRAP=
#Disables avoiding bootstrap: WITHOUT_LLVM_TARGET_ALL=
WITH_LLVM_TARGET_AARCH64=
WITH_LLVM_TARGET_ARM=
WITHOUT_LLVM_TARGET_MIPS=
WITHOUT_LLVM_TARGET_POWERPC=
WITHOUT_LLVM_TARGET_RISCV=
WITHOUT_LLVM_TARGET_X86=
WITH_CLANG=
WITH_CLANG_IS_CC=
WITH_CLANG_FULL=
WITH_CLANG_EXTRAS=
WITH_LLD=
WITH_LLD_IS_LD=
WITHOUT_BINUTILS=
WITH_LLDB=
#
WITH_BOOT=
WITHOUT_LIB32=
#
#
NO_WERROR=
#WERROR=
MALLOC_PRODUCTION=
#
# Avoid stripping but do not control host -g status as well:
DEBUG_FLAGS+=
#
WITH_DEBUG_FILES=
#
# Use of the .clang 's here avoids
# interfering with other C<?>FLAGS
# usage, such as ?= usage.
CFLAGS.clang+= -mcpu=cortex-a53
CXXFLAGS.clang+= -mcpu=cortex-a53
CPPFLAGS.clang+= -mcpu=cortex-a53
ACFLAGS.arm64cpuid.S+= -mcpu=cortex-a53+crypto
ACFLAGS.aesv8-armx.S+= -mcpu=cortex-a53+crypto
ACFLAGS.ghashv8-armx.S+= -mcpu=cortex-a53+crypto
# more /usr/src/sys/arm64/conf/GENERIC-NODBG
#
# GENERIC -- Custom configuration for the arm64/aarch64
#
include "GENERIC"
ident GENERIC-NODBG
makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
options ALT_BREAK_TO_DEBUGGER
options KDB # Enable kernel debugger support
# For minimum debugger support (stable branch) use:
#options KDB_TRACE # Print a stack trace for a panic
options DDB # Enable the kernel debugger
# Extra stuff:
#options VERBOSE_SYSINIT=0 # Enable verbose sysinit messages
#options BOOTVERBOSE=1
#options BOOTHOWTO=RB_VERBOSE
#options KTR
#options KTR_MASK=KTR_TRAP
##options KTR_CPUMASK=0xF
#options KTR_VERBOSE
# Disable any extra checking for. . .
nooptions DEADLKRES # Enable the deadlock resolver
nooptions INVARIANTS # Enable calls of extra sanity checking
nooptions INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
nooptions WITNESS # Enable checks to detect deadlocks and cycles
nooptions WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
nooptions DIAGNOSTIC
nooptions MALLOC_DEBUG_MAXZONES # Separate malloc(9) zones
nooptions BUF_TRACKING
nooptions FULL_BUF_TRACKING
===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
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