On July 04 at 06:26 EDT, Shem Multinymous hastily scribbled: > Will moving the hdapsd userspace daemon from sysfs polling to the > input infrastructure cause a noticable latency increase compared to > polling sysfs? This functionality is highly time-critical. > > Also, there's a small issue with polling frequency. hdapsd needs a > fairly high frequency (say, 50Hz) to gather statistics and keep > response latency low, whereas the hdaps driver's internal polling > (routing to the input infrastructure) is currently done at only 20Hz. > We'll need to increase the latter, thereby slightly increasing system > load when hdaps isn't running. Just out of curiousity, is there any reason that these hard drive parking schemes *aren't* implemented entirely in the kernel? Wouldn't implementing it in the kernel give it much lower latency? -- Thomas Tuttle ([email protected]) Get Thunderbird: Reclaim your inbox. mozilla.org/products/thunderbird aim/y!m:thinkinginbinary; icq:198113263; jabber:[email protected] msn: [email protected]; pgp: 0xAF5112C6
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