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Wed, 19 Mar 2008

Climbing evening: jumping-jumping-jumping.

That was really cool training today: the most exciting part was lots of jumps. It was not a new trace, but a special hold on the balcony, so that it could be gotten from lower positions with a jump. I spent more than a hour jumping from different holds to the finish one, although did not succed in the main jumping direction. Instead I damaged a shoulder, rubbed fingers on feet and arms, tired as hell and got zillion units of pleasure. Also finished couple of simple and quite complex old traces to the mix.
That was excellent time!

/life :: Link / Comments (0)

I have a very bad carma: hardware specification of the testing machines.

3 Intel E7520 systems, each one has two 3Ghz Xeon CPUs with HT enabled and EDAC bits, 4 Gb of RAM, Adaptec AIC7902 Ultra320 SCSI adapter. Disks: FUJITSU MAU3036NC 15k rpm 32 Gb system disk (will also be used in testing), two of them will be installed in mirror later, SEAGATE ST3300007LC 10k rpm 300 Gb testing disk.
The former has about 90 MB/s linear read speed, the latter - 75 MB/s.
About 5 minutes to fully compile and link loadable kernel.
Pretty neat machines, and I managed to lost three system disks already, doesn't it say about my bad carma? Without any load, without kernel changes, without anything... Is it because they are called devfs[123] and thus striking problems like that old virtual filesystem, which eventually died a torture death?

Waiting again... Since one machine is still alive, will start filesystem contest tomorrow, development will be a bit postponed.

/devel/other :: Link / Comments (1)

Temptation is over...

One man, 12 nights (13 days), one bottle of cuban rum and little bits of scotch whisky, 82 'House M.D' series... feels good.

Meanwhile got three 2-way Xeon servers with 2-4 (I forgot) gigs of RAM and gigabit link between them. Not bad for start. Also gathered lots of power and inspiration, so, here is a plan:

• second filesystem contest, now I will test btrfs 0.13 and btrfs-unstable in addition to previous ext[234], reiser[34], jfs and xfs running for the first prizes in dbench, iozone, postmark, maildir performance bench and simple file creation micro-benchmark. Results will show need for the yet another local filesystem. Making bets?
• fix two problems in distributed storage: there is a leak in mirror resync and unability to start a storage if config contains wrong network addresses.
• rewrite core pohmelfs algorithms to make it not good, but really good. This change will make it first against CRFS and CacheFS :) POHMELFS is not where I want it to be right now.
• fix HIFN driver bug.

/other :: Link / Comments (2)