| To: | Matthias Schniedermeyer <ms@xxxxxxx> |
|---|---|
| Subject: | Re: TRIM details |
| From: | Phil Karn <karn@xxxxxxxx> |
| Date: | Fri, 07 Jan 2011 06:15:15 -0800 |
| Cc: | xfs@xxxxxxxxxxx |
| In-reply-to: | <20110107091720.GA6921@xxxxxxx> |
| References: | <4D2686ED.7000304@xxxxxxxxxxxx> <20110107091120.GA6634@xxxxxxx> <20110107091720.GA6921@xxxxxxx> |
| User-agent: | Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 |
On 1/7/11 1:17 AM, Matthias Schniedermeyer wrote: > Altough, after thinking about it a little more. Doing a Population count > in the controller while the data comes in over the wire can't be that > expensive. Doesn't even have to be a popcount. Just OR every word into a register as the data flies by and look to see if the result is 0. |
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