Displaying 6 results from an estimated 6 matches for "680557cf79f8".
2017 Jul 27
0
Performance regression with virtio_net
...4.12 and 4.13 it takes minutes with a rate
> > > of ~150 KB/s. Everything else I've tried downloads as normal speeds.
> >
> > So just wget that URL should be enough?
>
> Yes. Note that sometimes it starts out faster then slows down.
> > > I bisected this to 680557cf79f8 "virtio_net: rework mergeable buffer
> > > handling". If I revert this on top of 4.13-rc2 (along with other changes
> > > needed to successfully revert it) speeds return to normal.
> > >
> > > Thanks,
> > > Seth
> >
> >
> >...
2017 Jul 27
0
Performance regression with virtio_net
...4.12 and 4.13 it takes minutes with a rate
> > > of ~150 KB/s. Everything else I've tried downloads as normal speeds.
> >
> > So just wget that URL should be enough?
>
> Yes. Note that sometimes it starts out faster then slows down.
> > > I bisected this to 680557cf79f8 "virtio_net: rework mergeable buffer
> > > handling". If I revert this on top of 4.13-rc2 (along with other changes
> > > needed to successfully revert it) speeds return to normal.
> > >
> > > Thanks,
> > > Seth
> >
> >
> >...
2017 Jul 27
0
Performance regression with virtio_net
...> which redirects to Internap's CDN. Normally this downloads in a few
> seconds at ~10 MB/s, but with 4.12 and 4.13 it takes minutes with a rate
> of ~150 KB/s. Everything else I've tried downloads as normal speeds.
So just wget that URL should be enough?
> I bisected this to 680557cf79f8 "virtio_net: rework mergeable buffer
> handling". If I revert this on top of 4.13-rc2 (along with other changes
> needed to successfully revert it) speeds return to normal.
>
> Thanks,
> Seth
Interesting. A more likely suspect would be
e377fcc8486d40867c6c217077ad0fa4097...
2017 Jul 31
0
[PATCH net] virtio_net: fix truesize for mergeable buffers
...roved performance"). That
commit had an internal reason not to account for the extra space: not
enough bits to do it. No longer true so let's account for the allocated
length exactly.
Many thanks to Seth Forshee for the report and bisecting and Euan Kemp
for debugging the issue.
Fixes: 680557cf79f8 ("virtio_net: rework mergeable buffer handling")
Reported-by: Euan Kemp <euan.kemp at coreos.com>
Tested-by: Euan Kemp <euan.kemp at coreos.com>
Reported-by: Seth Forshee <seth.forshee at canonical.com>
Tested-by: Seth Forshee <seth.forshee at canonical.com>
Signed...
2017 Jul 27
0
Performance regression with virtio_net
...> which redirects to Internap's CDN. Normally this downloads in a few
> seconds at ~10 MB/s, but with 4.12 and 4.13 it takes minutes with a rate
> of ~150 KB/s. Everything else I've tried downloads as normal speeds.
So just wget that URL should be enough?
> I bisected this to 680557cf79f8 "virtio_net: rework mergeable buffer
> handling". If I revert this on top of 4.13-rc2 (along with other changes
> needed to successfully revert it) speeds return to normal.
>
> Thanks,
> Seth
Interesting. A more likely suspect would be
e377fcc8486d40867c6c217077ad0fa4097...
2017 Jul 31
0
[PATCH net] virtio_net: fix truesize for mergeable buffers
...roved performance"). That
commit had an internal reason not to account for the extra space: not
enough bits to do it. No longer true so let's account for the allocated
length exactly.
Many thanks to Seth Forshee for the report and bisecting and Euan Kemp
for debugging the issue.
Fixes: 680557cf79f8 ("virtio_net: rework mergeable buffer handling")
Reported-by: Euan Kemp <euan.kemp at coreos.com>
Tested-by: Euan Kemp <euan.kemp at coreos.com>
Reported-by: Seth Forshee <seth.forshee at canonical.com>
Tested-by: Seth Forshee <seth.forshee at canonical.com>
Signed...