[DRBD-user] 10Gb ethernet ?

Lee Christie Lee at titaninternet.co.uk
Wed Jun 18 15:30:55 CEST 2008


> From: Igor Neves [mailto:igor at 3gnt.net] 
> Subject: Re: [DRBD-user] 10Gb ethernet ?
> 
> Hi,
> 
> I'm very interested in 10Gbit ethernet too. What NIC's have you found 
> for that?
> 
> The better one we have tested is 4Gbit ethernet (4x 1Gbit 
> Ethernet from Intel).

OK we're using these

http://www.intel.com/network/connectivity/products/10GbE_XF_SR_server_ad
apter.htm

Seeing some speedy bursts, but the overall average is perhaps a bit
disappointing :

version: 8.0.12 (api:86/proto:86)
GIT-hash: 5c9f89594553e32adb87d9638dce591782f947e3 build by
buildsvn at c5-x8664-build, 2008-06-02 11:17:42
 0: cs:SyncSource st:Secondary/Secondary ds:UpToDate/Inconsistent C r---
    ns:136562636 nr:0 dw:0 dr:136570688 al:0 bm:8335 lo:1 pe:4 ua:252
ap:0
	[>....................] sync'ed:  3.2% (4060478/4193840)M
	finish: 3:51:18 speed: 299,392 (141,956) K/sec
	resync: used:1/61 hits:8527077 misses:8336 starving:0 dirty:0
changed:8336
	act_log: used:0/127 hits:0 misses:0 starving:0 dirty:0 changed:0


Using FTP the transfer rate is 190MB/s between the two boxes. Both boxes
are using an 8-disk RAID-0 of 1TB SATA disks which is capable of a lot
more so I reckon the networking side of things needs tuning.

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