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[PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model
 

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wei.liu2 at citrix

May 27, 2013, 4:29 AM


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[PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model

* This is a xen-devel only post, since we have not reached concesus on
what to add / remove in this new model. This series tries to be
conservative about adding in new feature compared to V1.

This series implements NAPI + kthread 1:1 model for Xen netback.

This model
- provides better scheduling fairness among vifs
- is prerequisite for implementing multiqueue for Xen network driver

The first two patches are ground work for the third patch. First one
simplifies code in netback, second one can reduce memory footprint if we
switch to 1:1 model.

The third patch has the real meat:
- make use of NAPI to mitigate interrupt
- kthreads are not bound to CPUs any more, so that we can take
advantage of backend scheduler and trust it to do the right thing

Change since V1:
- No page pool in this version. Instead page tracking facility is
removed.

Wei Liu (3):
xen-netback: remove page tracking facility
xen-netback: switch to per-cpu scratch space
xen-netback: switch to NAPI + kthread 1:1 model

drivers/net/xen-netback/common.h | 92 ++--
drivers/net/xen-netback/interface.c | 122 +++--
drivers/net/xen-netback/netback.c | 959 +++++++++++++++--------------------
3 files changed, 537 insertions(+), 636 deletions(-)

--
1.7.10.4


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Subject User Time
[PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model wei.liu2 at citrix May 27, 2013, 4:29 AM
    Re: [PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model annie.li at oracle May 28, 2013, 7:35 AM
        Re: [PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model wei.liu2 at citrix May 28, 2013, 8:09 AM
    Re: [PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model david.vrabel at citrix Jun 11, 2013, 3:06 AM
        Re: [PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model wei.liu2 at citrix Jun 11, 2013, 3:15 AM
            Re: [PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model andrew.bennieston at citrix Jun 12, 2013, 6:44 AM
                Re: [PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model wei.liu2 at citrix Jun 13, 2013, 2:01 AM
                    Re: [PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model andrew.bennieston at citrix Jun 13, 2013, 4:18 AM
                        Re: [PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model wei.liu2 at citrix Jun 13, 2013, 6:06 AM
            Re: [PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model andrew.bennieston at citrix Jul 3, 2013, 5:45 AM
                Re: [PATCH 0/3 V2] xen-netback: switch to NAPI + kthread 1:1 model wei.liu2 at citrix Jul 3, 2013, 9:07 AM

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