Date: Wed, 29 May 2013 13:34:16 -0500 From: Adam Vande More <amvandemore@gmail.com> To: Warren Block <wblock@wonkity.com> Cc: Polytropon <freebsd@edvax.de>, Erich Dollansky <erichsfreebsdlist@alogt.com>, Michael Sierchio <kudzu@tenebras.com>, "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>, "M. V." <bored_to_death85@yahoo.com> Subject: Re: "swap" partition leads to instability? Message-ID: <CA%2BtpaK1etah3hZ-bkF1j6DnVbxrFkGUhcQhny5%2BUhrZ=bbB-eA@mail.gmail.com> In-Reply-To: <alpine.BSF.2.00.1305291201590.56816@wonkity.com> References: <1369558712.96152.YahooMailNeo@web165006.mail.bf1.yahoo.com> <20130526160906.4e379016@X220.ovitrap.com> <20130526113235.f5dbe768.freebsd@edvax.de> <alpine.BSF.2.00.1305261724050.29348@wonkity.com> <CA%2BtpaK106Fu0dKmR-4_e3ZjnjoMb3ZrjWEscXX99v1qj4BzCJw@mail.gmail.com> <alpine.BSF.2.00.1305261813040.30008@wonkity.com> <CA%2BtpaK3QwWJR5F1=1p=hQHvSDXcV_vXkX5W=pbmoQGVrZu3-dA@mail.gmail.com> <CAHu1Y72PxQ_Jtw_8RFuph1X60exkEwKvh2WkZtL0Xt0AkOFQzw@mail.gmail.com> <alpine.BSF.2.00.1305291201590.56816@wonkity.com>
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On Wed, May 29, 2013 at 1:05 PM, Warren Block <wblock@wonkity.com> wrote: > And you don't think the presence of TRIM--where the SSD can actually know > which blocks are no longer in use--is worthwhile? As a whole, TRIM is worthwhile. However when an SSD is overprovisioned it provides a lot of benefits. TRIM-less swap in this case doesn't. The PE rate of the worst MLC SSD's at this point is @3000 AFAIK. Given those figures and average desktop swap rate at my estimation, prioritizing write endurance on an SSD is not beneficial(especially with a SanForce). If you are swapping continuously something like ZeusRAM may be required. There are probably other solutions available as well as other 3rd party ones. If you are swapping a lot, the best case is usually to add RAM. -- Adam Vande More
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