[DRBD-user] DRBD - Slow Performance

[Dan Lavu]

Igor,

I appreciate the help, however with those settings, I'm now syncing at
320KB/s. I'm going to play around with the settings some more, because
this is the first time I've seen the sync rate change. 

Best Regards,

Dan Lavu


-----Original Message-----
From: drbd-user-bounces at lists.linbit.com
[mailto:drbd-user-bounces at lists.linbit.com] On Behalf Of Igor Widlinski
Sent: Monday, February 15, 2010 5:26 PM
Cc: drbd-user at lists.linbit.com
Subject: Re: [DRBD-user] DRBD - Slow Performance

Hey,

I was capped at 300kb/s until I put this in my config:

net {
     sndbuf-size       512k;
     max-buffers      20480;
     max-epoch-size   16384;
     unplug-watermark 20480;

  }

Good luck


Dan Lavu wrote:
> Digi,
>
> Thanks for advance again, but I've already tried this. I'm still
pegged
> at 2MB/s. I've exhausted IRC any google searches involving DRBD slow
> sync. I'm really contemplating rebuilding the machine with a RAID 10
to
> enhance performance but I still do not know if this is going to
resolve
> the issue, any thoughts about this? Thanks in advance.
>
> Best Regards,
>
> Dan Lavu
>
> -----Original Message-----
> From: drbd-user-bounces at lists.linbit.com
> [mailto:drbd-user-bounces at lists.linbit.com] On Behalf Of Digimer
> Sent: Monday, February 15, 2010 5:19 PM
> To: Dan Lavu
> Cc: drbd-user at lists.linbit.com
> Subject: Re: [DRBD-user] DRBD - Slow Performance
>
> Dan Lavu wrote:
>   
>> Digi,
>>
>> I tried what you suggested, and set the syncer rate to 30M but I'm
>>     
> still
>   
>> not syncing past 2MB/s. 
>>
>> Do you have any other ideas? 
>>     
>
> Read this:
>
> http://www.drbd.org/users-guide-emb/s-configure-syncer-rate.html
>
> In short, you should be able to issue a command similar to this:
>
> drbdsetup /dev/drbdo syncer -r 40M
>
> When done, issue this to revert to the drbd.conf settings;
>
> drbdadm adjust r0
>
> Digi
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>   


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