Re: Performance hit of frequent smartctl -A listings
John Gilmore <[email protected]>
| Newsgroups | gmane.linux.utilities.smartmontools |
|---|---|
| Message-ID | <[email protected]> |
> > I was wondering if it is a good idea to have monitoring system call smartctl -A /dev/sdX somewhat frequently on my drives to monitor drives temperatures. I'm thinking 2-5 minutes interval, but I'm wondering how much of a performance hit on a drive is smartctl -A. It probably varies on each drive; measure it and decide for yourself if it's impacting your performance. > > In fact, I would love to monitor most of the values in in smartctl -A output, which could lead to about 17 calls each 5 minutes. I know this is a very dumb way to go about it, and some intermediary caching mechanism is perhaps a must, but still, how costly are these listings? Don't "cache" it. Call smartctl -A once and parse the listing once, to extract whatever 17 values you need. John ------------------------------------------------------------------------------ Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk