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opnsense-src/sys/amd64/include
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Andrew Gallatin 1cac76c93f vm: reduce lock contention when processing vm batchqueues 
Rather than waiting until the batchqueue is full to acquire the lock &
process the queue, we now start trying to acquire the lock using trylocks
when the batchqueue is 1/2 full. This removes almost all contention on the
vm pagequeue mutex for for our busy sendfile() based web workload.
It also greadly reduces the amount of time a network driver ithread
remains blocked on a mutex, and eliminates some packet drops under
heavy load.

So that the system does not loose the benefit of processing large
batchqueues, I've doubled the size of the batchqueues. This way, when
there is no contention, we process the same batch size as before.

This has been run for several months on a busy Netflix server, as well
as on my personal desktop.

Reviewed by: markj
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D37305
2022-12-14 14:34:07 -05:00
..
pc smbios: Move smbios driver out from x86 machdep code 2021-02-23 21:17:09 +00:00
xen xen: Prevent buffer overflow in privcmd ioctl 2022-05-06 09:31:32 +02:00
_align.h
_bus.h Regularize my copyright notice 2019-12-04 16:56:11 +00:00
_inttypes.h
_limits.h
_stdint.h
_types.h
acpica_machdep.h
apm_bios.h
asan.h kasan: Create a shadow for the bootstack prior to hammer_time() 2022-06-15 11:39:10 -04:00
asm.h amd64: -m32 support for machine/asm(macros).h 2022-06-13 18:35:39 +01:00
asmacros.h elfnote: place note in a PT_NOTE program header 2022-06-28 09:51:57 +02:00
atomic.h amd64: -m32 support for machine/atomic.h 2022-06-13 18:35:39 +01:00
bus.h
bus_dma.h sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
clock.h x86: Deduplicate clock.h 2021-12-06 10:39:08 -05:00
counter.h amd64: -m32 support for machine/counter.h 2022-06-13 18:35:40 +01:00
cpu.h Simplify swi for bus_dma. 2021-12-28 13:51:25 -08:00
cpufunc.h amd64: -m32 support for machine/cpufunc.h 2022-06-13 18:35:38 +01:00
cputypes.h Remove 'cpu' and 'cpu_class' on amd64. 2016-09-15 17:05:54 +00:00
csan.h Limit when we call DELAY from KCSAN on amd64 2021-02-25 12:38:05 +00:00
db_machdep.h Create sys/reg.h for the common code previously in machine/reg.h 2021-08-30 12:50:53 +01:00
dump.h Factor out duplicated code from dumpsys() on each architecture into generic 2015-01-07 01:01:39 +00:00
efi.h Remove "All Rights Reserved" from FreeBSD Foundation sys/ copyrights 2021-08-08 10:42:24 -04:00
elf.h
endian.h
exec.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
fdt.h
float.h
floatingpoint.h spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
fpu.h Add domain policy allocation for amd64 fpu_kern_ctx 2020-07-03 14:54:46 +00:00
frame.h amd64: centralize definitions of CS_SECURE and EFL_SECURE 2021-09-21 20:20:14 +03:00
gdb_machdep.h gdb: report specific stop reason for watchpoints 2021-03-30 11:36:41 -03:00
ieeefp.h Remove checks for __GNUCLIKE_ASM assuming it is always true. 2022-04-12 10:05:45 -07:00
in_cksum.h machine/in_cksum.h: don't include sys/cdefs.h 2022-04-18 21:02:19 +01:00
intr_machdep.h amd64: Make it easier to configure exception stack sizes 2020-11-04 16:42:20 +00:00
iodev.h sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
iommu.h o Add machine/iommu.h and include MD iommu headers from it, 2020-08-05 19:11:31 +00:00
kdb.h x86: implement kdb watchpoint functions 2021-03-29 12:05:43 -03:00
limits.h Remove checks for __CC_SUPPORTS_WARNING assuming it is always true. 2022-04-12 10:06:13 -07:00
md_var.h kasan: Create a shadow for the bootstack prior to hammer_time() 2022-06-15 11:39:10 -04:00
memdev.h Add the MEM_EXTRACT_PADDR ioctl to /dev/mem. 2020-09-02 18:12:47 +00:00
metadata.h Move amd64 metadata.h to x86 and share with i386 2016-01-07 19:47:26 +00:00
minidump.h Sparsify the vm_page_dump bitmap 2020-09-21 22:21:59 +00:00
msan.h Add the KMSAN runtime 2021-08-10 21:27:53 -04:00
nexusvar.h
npx.h
ofw_machdep.h
param.h amd64: Populate the KMSAN shadow maps and integrate with the VM 2021-08-10 21:27:53 -04:00
pcb.h Fix for mis-interpretation of PCB_KERNFPU. 2020-10-14 23:01:41 +00:00
pci_cfgreg.h
pcpu.h amd64: -m32 support for machine/pcpu.h 2022-06-13 18:35:40 +01:00
pcpu_aux.h amd64: -m32 support for machine/pcpu_aux.h 2022-06-13 18:35:40 +01:00
pmap.h sys: Consolidate common implementation details of PV entries. 2022-10-07 10:14:03 -07:00
pmc_mdep.h hwpmc: ABI fixes 2018-06-04 02:05:48 +00:00
ppireg.h sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
proc.h amd64: -m32 support for machine/proc.h 2022-06-13 18:35:39 +01:00
procctl.h amd64 KPTI: add control from procctl(2). 2019-03-16 11:44:33 +00:00
profile.h amd64: -m32 support for machine/profile.h 2022-06-13 18:35:39 +01:00
psl.h
ptrace.h
pvclock.h Generalized parts of the XEN timer code into a generic pvclock 2015-02-04 08:26:43 +00:00
reg.h
reloc.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
resource.h
runq.h sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
segments.h amd64: -m32 support for machine/segments.h 2022-06-13 18:35:39 +01:00
setjmp.h
sf_buf.h amd64: -m32 support for machine/sb_buf.h 2022-06-13 18:35:39 +01:00
sgx.h Add support for Intel Software Guard Extensions (Intel SGX). 2017-08-16 10:38:06 +00:00
sgxreg.h Add support for Intel Software Guard Extensions (Intel SGX). 2017-08-16 10:38:06 +00:00
sigframe.h
signal.h
smp.h amd64: rework AP startup 2021-07-27 20:11:15 +03:00
specialreg.h
stack.h Merge stack(9) implementations for i386 and amd64 under x86/. 2015-09-11 03:24:07 +00:00
stdarg.h
sysarch.h
timerreg.h sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
tls.h Add <machine/tls.h> header to hold MD constants and helpers for TLS. 2021-12-09 13:17:13 -08:00
trap.h
tss.h amd64: move common_tss into pcpu. 2019-11-10 09:28:18 +00:00
ucontext.h
vdso.h
vm.h Create VM_MEMATTR_DEVICE on all architectures 2021-04-12 06:15:31 +00:00
vmm.h vmm: Remove stale comment for vm_rendezvous. 2022-11-30 13:06:46 -08:00
vmm_dev.h vmm: Don't lock a vCPU for VM_PPTDEV_MSI[X]. 2022-12-09 10:26:23 -08:00
vmm_instruction_emul.h vmm: Use struct vcpu in the instruction emulation code. 2022-11-18 10:25:37 -08:00
vmm_snapshot.h bhyve: Drop volatile qualifiers from snapshot code 2022-11-11 10:02:26 -05:00
vmparam.h vm: reduce lock contention when processing vm batchqueues 2022-12-14 14:34:07 -05:00