[DRBD-user] Syncer rate limit of 700000K/s...

Francis SOUYRI francis.souyri at apec.fr
Mon Oct 2 09:10:34 CEST 2006

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Hello Lars,

Lars Ellenberg wrote:
> / 2006-09-29 12:23:57 +0200
> \ Francis SOUYRI:
>   
>> Hello,
>>
>>   I have a cluster of two nodes and for the drbd link I have a bond of two gigabit links.
>> I want to used the maximun speed for the sync but with drbd 0.7.21 I am limited to a speed of 700000K/s.
>>     
>
> may I cite the example drbd.conf:
>
> #
> # NOTE common pitfall:
> # rate is given in units of _byte_ not bit
> #
>
> # Limit the bandwith used by the resynchronisation process.
> # default unit is kByte/sec; optional suffixes K,M,G are allowed.
> #
> # Even though this is a network setting, the units are based
> # on _byte_ (octet for our french friends) not bit.
> # We are storage guys.
> #
> # Note that on 100Mbit ethernet, you cannot expect more than
> # 12.5 MByte total transfer rate.
> # Consider using GigaBit Ethernet.
> #
> rate 10M;
>
>   
Sorry, for my mistake between MB, Mb... but I am confused by the 
suffixes G (optional suffixes K,M,G are allowed.)
>> How to increase this limit ? I need to edit the drbd_limits.h file ?
>>     
>
> basically, yes.
> but I seriouly would envy you for having an io backend that can deliver
> a write performance of more than 700 Mega octets per second :)
>
>   
With my config no... 80Mo/s...

Best regards.

Francis



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