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[Qemu-devel] [RFC PATCH 0/6] First Threading Model


From: Arun R Bharadwaj
Subject: [Qemu-devel] [RFC PATCH 0/6] First Threading Model
Date: Wed, 13 Oct 2010 22:39:24 +0530
User-agent: StGit/0.15

Hi,

This patchset implements first threading model by making use
of the threadlets infrastructure being discussed here:
http://www.mail-archive.com/address@hidden/msg36678.html

Here are some of the performance results comparing between the
original code and threading model code:
http://pastebin.com/EzdJRC34

Following are the features of the first threading model:

* The VCPU thread runs the Qemu code until the first blocking
  call is encountered.

* The work to be done in the blocking call is assigned to an
  asynchronous thread and the VCPU thread continues running
  the Qemu code.

* The aynchronous thread reports back to the VCPU/IO thread
  when the blocking call is finished.

* The VCPU/IO thread continues from immediately after the
  blocking call until the next blocking call is hit, and
  the whole process is repeated till no blocking call is
  encountered.

The following series implements...

---

Gautham R Shenoy (6):
      This patch converts v9fs_stat() to make use of the threadlets 
infrastructure.
      This patch converts v9fs_wstat() to make use of the threadlets 
infrastructure.
      This patch converts v9fs_read() to make use of the threadlets 
infrastructure.
      This patch converts v9fs_write() to make use of the threadlets 
infrastructure.
      This patch converts v9fs_open() to make use of the threadlets 
infrastructure.
      This patch converts v9fs_walk() to make use of the threadlets 
infrastructure.


 hw/virtio-9p.c |  770 +++++++++++++++++++++++++++++++++++++++++---------------
 hw/virtio-9p.h |   33 ++
 2 files changed, 597 insertions(+), 206 deletions(-)

-- 
arun



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