发件人： <[email protected]>
收件人： <[email protected]>
抄送人：芦志朋10108272 <[email protected]>
日 期 ：2017年07月11日 17:11
主 题 ：Re: [libvirt] [PATCH] util: increase libnl buffer size to 1M
>>On Mon, Jul 10, 2017 at 02:51:34PM -0400, John Ferlan wrote:
>>
> >
>> On 06/29/2017 02:05 PM, ZhiPeng Lu wrote:
>> > nl_recv() returns the error "No buffer space available"
>> > when using virsh destroy domain with 240 or more
>> > passhthrough network interfaces.
>>
>> pass-through
>>
>> > The patch increases libnl sock receive buffer size to 1M,
>> > and nl_recv() doesn't return error when destroying domain
>> > with 512 network interfaces.
>> >
>> > Signed-off-by: ZhiPeng Lu <[email protected]>
>> > ---
>> > src/util/virnetlink.c | 4 ++--
>> > 1 file changed, 2 insertions(+), 2 deletions(-)
>> >
>>
>> This feels like something that perhaps should be configurable - that is
>> some /etc/libvirt/libvirtd.conf variable otherwise, we'll keep hitting
>> some conflated maximum based on the size of something.
>1 MB matches what systemed/udevd uses, so if we hit that limit, then the
>system as a whole is going to struggle already. So I don't think we need
>make it configurable.
----------1M is just an experience value, and I feel that setting up a
configuration item
can accommodate the needs of different users.
In addition, this is only the netlink socket receive buffer size that will not
affect the entire system.
The default value can still be set to 128K.
芦志朋 luzhipeng
IT开发工程师 IT Development
Engineer
操作系统产品部/中心研究院/系统产品 OS Product Dept./Central R＆D Institute/System Product
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33/F, R&D Building, ZTE
Corporation Hi-tech Road South,
Hi-tech
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E: [email protected]
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原始邮件
发件人： <[email protected]>
收件人： <[email protected]>
抄送人：芦志朋10108272 <[email protected]>
日 期 ：2017年07月11日 17:11
主 题 ：Re: [libvirt] [PATCH] util: increase libnl buffer size to 1M
On Mon, Jul 10, 2017 at 02:51:34PM -0400, John Ferlan wrote:
>
>
> On 06/29/2017 02:05 PM, ZhiPeng Lu wrote:
> > nl_recv() returns the error "No buffer space available"
> > when using virsh destroy domain with 240 or more
> > passhthrough network interfaces.
>
> pass-through
>
> > The patch increases libnl sock receive buffer size to 1M,
> > and nl_recv() doesn't return error when destroying domain
> > with 512 network interfaces.
> >
> > Signed-off-by: ZhiPeng Lu <[email protected]>
> > ---
> > src/util/virnetlink.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
>
> This feels like something that perhaps should be configurable - that is
> some /etc/libvirt/libvirtd.conf variable otherwise, we'll keep hitting
> some conflated maximum based on the size of something.
1 MB matches what systemed/udevd uses, so if we hit that limit, then the
system as a whole is going to struggle already. So I don't think we need
make it configurable.
Regards,
Daniel
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