## Inexpensive IB is here

No, not “cheap” as in sub-standard, just inexpensive. See ClusterMonkey for details. Yeah, going to have to pick up some of these 🙂 Even though I complain about OFED, when it works, it really works well. Building it is just a bear.

## Computing in the clouds …

Robin at Storagemojo tears into the latest buzzword-enabled marketing phrase, cloud computing. Robin’s thesis is that there are impediments to moving to the cloud, those being bandwidth and the “non-magic” nature of Google’s infrastructure.
I don’t agree with his ascribing blame for the bandwidth issue to Cisco. It really is not their issue. Bandwidth providers in the US are the primary culprit … we have been behind the curve for quite some time in terms of bandwidth delivered to business/homes. The reason for this is the same as the reason for the RIAA suits against their end user base … protecting a business model and existing investment by avoiding newer technology that would cause significant capital expenditure.

Read moreComputing in the clouds …

## The need to keep building and packaging as separate operations

I am working … no … struggling to “build” OFED 1.2.5.4 for our systems. OFED, for those who are not aware, is the bolus of drivers/infrastructure to support infiniband. I won’t get into the IB vs 10 GbE debate here, I see room for both technologies.
There is a catch. The people who develop OFED have made specific choices that make it, generally speaking, extraordinarily hard to debug incorrect builds of OFED, as they have integrated the build process into the packaging process using RPM. It is, as far as I am aware, simply not possible to separate the two.

Read moreThe need to keep building and packaging as separate operations

## What would be considered good iSCSI bonnie performance?

I am curious. Running JackRabbit with a pair of 10 GbE cards. Getting some numbers, wantLe Tavole di blackjack sono anche sia installano per Holdem e Omaha o Stud. to compare to others to see where we stand. Is more than 100 MB/s good? More than 200 MB/s? 300 MB/s? 10 GbE should give us … Read moreWhat would be considered good iSCSI bonnie performance?

## and a slightly hacked IOzone as well …

I wanted to test JackRabbit in cache, as well as out of cache. Unfortunately IOzone as written suffers from lots of 2G limits. and they limited their buffer sizes to 16M. So I bumped these up, and fixed the cache line size (it is 64 bytes for Opteron). Run began: Wed Jan 23 17:14:25 2008 … Read moreand a slightly hacked IOzone as well …

## more JackRabbit testing

Updated a few things (bios) that I needed to. Reran tests. Remember, this is a sub \$10,000 box (and it will do file and block IO … simultaneously if needed). Running RAID6 with one hot spare.


start at Wed Jan 23 13:49:54 EST 2008
10000+0 records in
10000+0 records out
1342177280000 bytes (1.3 TB) copied, \
1764.12 seconds, 761 MB/s
stop at Wed Jan 23 14:19:18 EST 2008



and its companion


root@jr1:~# ./simple-write.bash
start at Wed Jan 23 13:13:48 EST 2008
10000+0 records in
10000+0 records out
1342177280000 bytes (1.3 TB) copied, \
1800.36 seconds, 746 MB/s
stop at Wed Jan 23 13:43:48 EST 2008



## A question I touched on briefly …

this person at Interop news goes into, in depth. The business person in me had difficulty understanding the acquisition. Sun didn’t have a missing technological niche the MySQL filled. MySQL had all the standard problems of growing a business, compounded by the Open source revenue model, which effectively eliminates distribution/redistribution revenues.
There are many commercial outfits likely skirting the edge of legitimacy using MySQL in their shipping supported closed source products. They skirt the issue by claiming that the OS ships with the distro, so they don’t care, and won’t buy a commercial license. Why should they, its free … right?
Well, no. And this is one of the great unsolved issues in open source business models. You effectively foreclose redistribution revenue. So how can you recover revenue for your efforts and pay your ongoing costs … like people’s salaries … never mind making a profit, which the shareholders/owners really would like you to do?

Read moreA question I touched on briefly …

## Another day, another JackRabbit …

Built a new one for testing in the lab, though it looks like it may have a happy home elsewhere (along with some of its brethren) quite soon.
Previously, for our huge write test case, we had sustained about 612 MB/s way way outside cache for our 1.3 TB write. That was after the unit had finished building the array, and been quiesced.
We are about 88% built, the array is still cranking, and I wanted to see what it could do with a few bits tied behind its back. Note that the rebuild is getting 4:1 of the RAID controller CPU.

Read moreAnother day, another JackRabbit …

## You live, you learn, hopefully you don't make the same mistake twice …

About two years ago, we were “invited” to pitch our business and plans to a local VC event. This was good, we were in the hunt for capital, and getting in front of lots of VC’s isn’t a bad idea. Well the “invited” part is in scare quotes, we had to compete with our executive summary. Ok, so we made it past the initial “competition” (hmmm notice the scare quotes).
We had to prepare our slides, our talks and some documents. No problem, we had most of them done anyway. Had some tweaking to do, practice, get feedback.
Not an issue, right? No, really not.
But lets put this aside for a moment.

Read moreYou live, you learn, hopefully you don't make the same mistake twice …