NothingOSS/android_kernel_msm-6.1_nothing_sm7635
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
Kernel Source and devicetree for NOTHING Phone(3a) and Phone(3a)Pro
841495 commits 1 branch 0 tags 2.6 GiB
Find a file
Willem de Bruijn 31c03aef9b virtio_net: enable napi_tx by default 
NAPI tx mode improves TCP behavior by enabling TCP small queues (TSQ).
TSQ reduces queuing ("bufferbloat") and burstiness.

Previous measurements have shown significant improvement for
TCP_STREAM style workloads. Such as those in commit 86a5df1495
("Merge branch 'virtio-net-tx-napi'").

There has been uncertainty about smaller possible regressions in
latency due to increased reliance on tx interrupts.

The above results did not show that, nor did I observe this when
rerunning TCP_RR on Linux 5.1 this week on a pair of guests in the
same rack. This may be subject to other settings, notably interrupt
coalescing.

In the unlikely case of regression, we have landed a credible runtime
solution. Ethtool can configure it with -C tx-frames [0|1] as of
commit 0c465be183 ("virtio_net: ethtool tx napi configuration").

NAPI tx mode has been the default in Google Container-Optimized OS
(COS) for over half a year, as of release M70 in October 2018,
without any negative reports.

Link: https://marc.info/?l=linux-netdev&m=149305618416472
Link: https://lwn.net/Articles/507065/
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 19:34:27 -07:00
arch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
block block: print offending values when cloned rq limits are exceeded 2019-05-31 15:12:34 -06:00
certs
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-06-06 13:10:49 -07:00
Documentation net: dsa: microchip: Support optional 125MHz SYNCLKO output 2019-06-14 19:11:53 -07:00
drivers virtio_net: enable napi_tx by default 2019-06-14 19:34:27 -07:00
fs Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
include locking/static_key: always define static_branch_deferred_inc 2019-06-14 19:31:47 -07:00
init treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
ipc
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
LICENSES
mm mm, compaction: make sure we isolate a valid PFN 2019-06-01 15:51:32 -07:00
net net: sched: ingress: set 'unlocked' flag for clsact Qdisc ops 2019-06-14 19:32:56 -07:00
samples Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
scripts Merge branch 'akpm' (patches from Andrew) 2019-06-02 08:51:30 -07:00
security Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
sound treewide: fix typos of SPDX-License-Identifier 2019-06-01 18:29:58 +02:00
tools selftests: ptp: Add Physical Hardware Clock test 2019-06-13 22:34:55 -07:00
usr
virt Fixes for PPC and s390. 2019-06-02 10:19:39 -07:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS MAINTAINERS: Farewell Martin Schwidefsky 2019-05-31 10:14:11 +02:00
Kbuild
Kconfig
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
Makefile Linux 5.2-rc3 2019-06-02 13:55:33 -07:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.