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From: Christian Schoenebeck <qemu_oss@crudebyte.com>
To: qemu-devel@nongnu.org, Peter Maydell <peter.maydell@linaro.org>
Cc: Greg Kurz <groug@kaod.org>
Subject: [PULL 0/2] 9p queue
Date: Tue, 15 Sep 2020 12:38:01 +0200	[thread overview]
Message-ID: <cover.1600166281.git.qemu_oss@crudebyte.com> (raw)

The following changes since commit 2d2c73d0e3d504a61f868e46e6abd5643f38091b:

  Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20200914-1' into staging (2020-09-14 16:03:08 +0100)

are available in the Git repository at:

  https://github.com/cschoenebeck/qemu.git tags/pull-9p-20200915

for you to fetch changes up to c418f935ac6aed9aa1dc0ceb4b19044a9b7b7968:

  9pfs: disable msize warning for synth driver (2020-09-15 12:12:03 +0200)

----------------------------------------------------------------
The intention of the following two patches is making users aware about
the negative file I/O performance impact when using a very low value
for 9P client parameter 'msize', which especially is the case if no
'msize' parameter was supplied by the user with a 9P Linux client at all.

All it does is logging a performance warning on host side (once) in
that case. By setting 'msize' on client side to any value larger than
8192 the performance warning will disappear.

See https://wiki.qemu.org/Documentation/9psetup#msize for details.

----------------------------------------------------------------
Christian Schoenebeck (2):
      9pfs: log warning if msize <= 8192
      9pfs: disable msize warning for synth driver

 fsdev/file-op-9p.h | 4 ++++
 hw/9pfs/9p-synth.c | 2 ++
 hw/9pfs/9p.c       | 9 +++++++++
 3 files changed, 15 insertions(+)


             reply	other threads:[~2020-09-16  9:53 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-15 10:38 Christian Schoenebeck [this message]
2020-09-03 14:20 ` [PULL 1/2] 9pfs: log warning if msize <= 8192 Christian Schoenebeck
2020-09-06 16:50 ` [PULL 2/2] 9pfs: disable msize warning for synth driver Christian Schoenebeck
2020-09-16 15:25 ` [PULL 0/2] 9p queue Peter Maydell

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