I've been looking for an alternative to ldirectord because it is single-threaded. My config file is so long that it now takes about 3 or 4 minutes to health-check all my servers, which means a server could be down for that long before the load balancer notices. Ldirectord does have the advantage of being free, which is nice, but I might be interested in something that isn't too expensive. Is loadbalancer.org what I'm looking for?
--Eric
-----Original Message-----
From: lvs-users-bounces@linuxvirtualserver.org [mailto:lvs-users-bounces@linuxvirtualserver.org] On Behalf Of Malcolm Turnbull
Sent: Saturday, September 19, 2015 1:24 AM
To: LinuxVirtualServer.org users mailing list. <lvs-users@linuxvirtualserver.org>
Subject: Re: [lvs-users] Upgraded my Load Balancers, Performance Went to Sh*t
Eric,
That's great news, glad to hear that it is working!
Fudge sounds nice :-). But maybe just spread the word that Loadbalancer.org are nice people?
http://loadbalancer.org/blog/so-just-how-should-you-compare-load-balancers I remember now that we did some work with Horms to fix GRO for a customer of ours who needed it (but RHEL 6.3 probably doesn't have it)
Dug out of my email:
In all 2.6.39 was a rather busy release for LVS with a total of 92 patches.
Some highlights are:
Features
* Network namespace support
* New synchronisation protocol
* Optimised statistics reading
Bug Fixes
* Allow transmit of GRO aggregated skbs
* Allow fragmented packets to be handled by SIP persistence engine
* Correct zeroing of statistics
On 19 September 2015 at 08:28, Eric Robinson <eric.robinson@psmnv.com> wrote:
> Malcom -- My wife makes wonderful fudge at Christmas time. Where should I send yours?
>
> Because...
>
> ethtool -K p2p1 gro off
> ethtool -K p2p2 gro off
> ethtool -K p2p3 gro off
> ethtool -K p2p4 gro off
>
> ...totally fixed it! The change was instantaneous. I didn't even have to down/up the interfaces.
>
> I'm sitting here stunned. The application isn't freezing any more. I hardly know what to do with myself.
>
> Thanks!
>
> --Eric
>
> -----Original Message-----
> From: lvs-users-bounces@linuxvirtualserver.org
> [mailto:lvs-users-bounces@linuxvirtualserver.org] On Behalf Of Malcolm
> Turnbull
> Sent: Saturday, September 19, 2015 12:05 AM
> To: LinuxVirtualServer.org users mailing list.
> <lvs-users@linuxvirtualserver.org>
> Subject: Re: [lvs-users] Upgraded my Load Balancers, Performance Went
> to Sh*t
>
> Eric,
>
> Ah , OK I thought that might be too simple :-).
>
> Some general advice from our end is:
> We have had problems with both LRO & GRO in the past (we disable them both), and we also run irqbalance (to save on CPU overhead from network traffic).
> Also we tend to use Intel NICs with the latest drivers.
> We do use Centos 6.3 (roughly) but with a more recent Kernel so I'm afraid I can't be much help.
>
>
>
>
>
> On 18 September 2015 at 23:54, Eric Robinson <eric.robinson@psmnv.com> wrote:
>> That's the odd part. We don't have any WRR health checks at all. Everything is WLC. And the ldirectord.cf file did not change, not did the version of ldirectord itself. I have checked through the file, and there are no virtual servers that are not backed by realservers, and there are no realservers showing in a down state. I would post the file but it is quite long. We have approximately 1700 virtual services configured.
>>
>> --Eric
>>
>>
>> -----Original Message-----
>> From: lvs-users-bounces@linuxvirtualserver.org
>> [mailto:lvs-users-bounces@linuxvirtualserver.org] On Behalf Of
>> Malcolm Turnbull
>> Sent: Friday, September 18, 2015 2:20 PM
>> To: LinuxVirtualServer.org users mailing list.
>> <lvs-users@linuxvirtualserver.org>
>> Subject: Re: [lvs-users] Upgraded my Load Balancers, Performance Went
>> to Sh*t
>>
>> Eric,
>>
>> What kind of health checks are you using, it sounds like no backend servers available in the cluster?
>>
>> On 18 September 2015 at 17:11, Eric Robinson <eric.robinson@psmnv.com> wrote:
>>> ...oh, and one other thing. After the upgrade, I am now seeing these syslog messages once approximately per second...
>>>
>>> Sep 18 09:06:26 lb01a kernel: IPVS: WRR: no destination available:
>>> no destinations present Sep 18 09:06:28 lb01a kernel: IPVS: WRR: no
>>> destination available: no destinations present Sep 18 09:06:29 lb01a
>>> kernel: IPVS: WRR: no destination available: no destinations present
>>> Sep 18 09:06:31 lb01a kernel: IPVS: WRR: no destination available:
>>> no destinations present Sep 18 09:06:32 lb01a kernel: IPVS: WRR: no
>>> destination available: no destinations present Sep 18 09:06:34 lb01a
>>> kernel: IPVS: WRR: no destination available: no destinations present
>>> Sep 18 09:06:35 lb01a kernel: IPVS: WRR: no destination available:
>>> no destinations present Sep 18 09:06:37 lb01a kernel: IPVS: WRR: no
>>> destination available: no destinations present Sep 18 09:06:38 lb01a
>>> kernel: IPVS: WRR: no destination available: no destinations present
>>> Sep 18 09:06:40 lb01a kernel: IPVS: WRR: no destination available:
>>> no destinations present Sep 18 09:06:41 lb01a kernel: IPVS: WRR: no
>>> destination available: no destinations present Sep 18 09:06:43 lb01a
>>> kernel: IPVS: WRR: no destination available: no destinations present
>>> Sep 18 09:06:44 lb01a kernel: IPVS: WRR: no destination available:
>>> no destinations present
>>>
>>> _______________________________________________
>>> Please read the documentation before posting - it's available at:
>>> http://www.linuxvirtualserver.org/
>>>
>>> LinuxVirtualServer.org mailing list -
>>> lvs-users@LinuxVirtualServer.org Send requests to
>>> lvs-users-request@LinuxVirtualServer.org
>>> or go to http://lists.graemef.net/mailman/listinfo/lvs-users
>>
>>
>>
>> --
>> Regards,
>>
>> Malcolm Turnbull.
>>
>> Loadbalancer.org Ltd.
>> Phone: +44 (0)330 1604540
>> http://www.loadbalancer.org/
>>
>> _______________________________________________
>> Please read the documentation before posting - it's available at:
>> http://www.linuxvirtualserver.org/
>>
>> LinuxVirtualServer.org mailing list -
>> lvs-users@LinuxVirtualServer.org Send requests to
>> lvs-users-request@LinuxVirtualServer.org
>> or go to http://lists.graemef.net/mailman/listinfo/lvs-users
>>
>> _______________________________________________
>> Please read the documentation before posting - it's available at:
>> http://www.linuxvirtualserver.org/
>>
>> LinuxVirtualServer.org mailing list -
>> lvs-users@LinuxVirtualServer.org Send requests to
>> lvs-users-request@LinuxVirtualServer.org
>> or go to http://lists.graemef.net/mailman/listinfo/lvs-users
>
>
>
> --
> Regards,
>
> Malcolm Turnbull.
>
> Loadbalancer.org Ltd.
> Phone: +44 (0)330 1604540
> http://www.loadbalancer.org/
>
> _______________________________________________
> Please read the documentation before posting - it's available at:
> http://www.linuxvirtualserver.org/
>
> LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org
> Send requests to lvs-users-request@LinuxVirtualServer.org
> or go to http://lists.graemef.net/mailman/listinfo/lvs-users
>
> _______________________________________________
> Please read the documentation before posting - it's available at:
> http://www.linuxvirtualserver.org/
>
> LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org
> Send requests to lvs-users-request@LinuxVirtualServer.org
> or go to http://lists.graemef.net/mailman/listinfo/lvs-users
--
Regards,
Malcolm Turnbull.
Loadbalancer.org Ltd.
Phone: +44 (0)330 1604540
http://www.loadbalancer.org/ _______________________________________________
Please read the documentation before posting - it's available at:
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or go to
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Please read the documentation before posting - it's available at:
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Send requests to lvs-users-request@LinuxVirtualServer.org
or go to
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