Re: Packet Loss due to Disk Contention with Running Dumpcap in a high packet rate environment

[John Powell <jrp999 () gmail com>]

Hi Kurt,

I have purchased a 300 GB SSD and a PCI-e Disk Controller.

I am still in the planning stage as to how to set this up.

My initial ideas are to:


   - Leave the SSD on the motherboard Disk Controller
   - Connect the Platter Hard Drives to the PCI-e Disk Controller
   - Send the initial capture files to be stored on the SSD
   - Use RSync to move the files from the SSD to the Platter Hard Drives (
   --remove-source-files )
   (this is required as I am receiving 1.5 TB a day and the SSD is only 300
   GB)
   (
   http://www.cyberciti.biz/tips/linux-use-rsync-transfer-mirror-files-directories.html
   )
   (
   http://www.cyberciti.biz/faq/linux-unix-bsd-appleosx-rsync-delete-file-after-transfer/
   )
   (
   http://unix.stackexchange.com/questions/12198/preserve-the-permissions-with-rsync
   )
   (
   http://stackoverflow.com/questions/9586798/rsync-over-ssh-preserve-ownership-only-for-www-data-owned-files
   )
   (http://www.comentum.com/rsync.html)
   - Investigate limiting the Bandwidth of RSync to reduce contention on
   the Platter Drives if required.
   (http://www.cyberciti.biz/faq/throttle-disk-io-rate-limit-disk-io/)

Thoughts?

-John


On Wed, Jan 9, 2013 at 6:48 PM, <ws.dev.list () nospam knochner com> wrote:

> On 2012-12-14 14:13, John Powell wrote:
>
> > Thanks for the heads up - I have obtained a 300 G SSD that I will
> > experiment with.
> >
> > I will let you know if I find the same result.
>
> I'm just curious. What are your results with the SSD?
>
> BTW: did you try to 'ionice' dumpcap?
>
> Cheers
> Kurt
>
>
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