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Shouting at Disk Array Increases Latency
Madshrimps News RSS Feed —
The issue is not with the 7410, it's with disk drives in general. The disk latency here is also not suffered by the client applications, as this is ZFS asynchronously flushing write data to disk. Still, it was great to see how easily Analytics could identify this latency, and interesting to see what the cause was. ...
Sun reveals that yelling at disk drives causes high latency
Fudzilla —
Image According to video experiment It isn't everyday that someone posts up a YouTube video demonstrating the effects of human vocal vibrations on disk drives. Nevertheless, an engineer from the Sun Microsystems Fishworks lab proceeded to yell and scream at his high volume JBOD disk array and has given the rest of the world one straight answer to his findings: yelling at your computer isn't going to make it run any faster. According to the performance analysis results in the video, the generated vocal vibrations caused a sharp spike in the number of I/O operations per disk and a noticeable latency increase on the overall workload. In the end, however, ...
Don't Yell at Your Hard Drives: Sun Engineer
techPowerUp! —
No, seriously don't. An engineer at Sun Microsystems' Fishworks lab discovered that yelling at your hard-drive causes sharp (yet momentary) increases in the hard-drive's latency. The engineer demonstrated this by yelling a portion of a server holding a RAID JBOD array, while monitoring its IO/s and latencies of the drive he was yelling at it. Each time he yelled at it, there was a surge in the drive's latency. The engineer posted his demonstration on YouTube. Now you know that yelling at your hard-drive isn't going to help, or is it? This opens up some interesting topics to research on, of how the rather loud environment enterprise hard-drives are put through in ...
Don’t Yell at Your Hard Drives: Sun Engineer
BurnOutPC.com —
No, seriously don't. An engineer at Sun Microsystems' Fishworks lab discovered that yelling at your hard-drive causes sharp (yet momentary) increases in the hard-drive's latency. The engineer demonstrated this by yelling a portion of a server holding a RAID JBOD array, while monitoring its IO/s and latencies of the drive he was yelling at it. Each time he yelled at it, there was a surge in the drive's latency. The engineer posted his demonstration on YouTube. Now you know that yelling at your hard-drive isn't going to help, or is it? This opens up some interesting topics to research on, of how the rather loud environment enterprise hard-drives are put through in ...
Screaming is bad for your HDD (video)
DV Hardware —
Brendan Gregg from Sun's Fishworks team discovered vibrations (like the sound wave from a loud scream) have a bad effect on the performance of hard drives:
Screaming is bad for your HDD (video) - More news at DV Hardware
Don't shout at your discs
CPU-World.com discussion forums —
Don't shout at your discs Post new topic Reply to topic CPU-World.com forums Forum Index -> Off Topic View previous topic :: View next topic Author Message Elar Joined: 16 Jul 2003 Posts: 367 Location: Tallinn, Estonia Post Posted: Mon Jan 05, 2009 11:39 am Post subject: Don't shout at your discs Reply with quote Don't shout at your hard discs, they will bite back Very Happy http://www.youtube.com/watch?v=tDacjrSCeq4 Back to top View user's profile Send private message [ Hidden ] [image] andamus [image] Joined: 06 Dec 2004 Posts: 731 Post Posted: Mon Jan 05, ...
