Rich Mingin (PLUG) on 16 Apr 2015 11:51:31 -0700

[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]

Re: [PLUG] swappiness and ssd

I was actually tangentially connected to that testing, and while it generally had large non-compressable chunks written across the whole disk, there were interval tests that involved writing particular groups of smaller files to the SSDs and reading them back. Those actually showed issues a bit before the big overwrite tests, so Rich Prime noted, I wouldn't extrapolate those tests to mean that you can take any given consumer drive and beat it up with a few hundred TB of writes and then be shocked when it dies.

I've been watching use on my Samsung 830 Pro 256GB at home for quite a few years now, and there are definitely 'hot spots' of intense activity. I'll be planning to replace my SSD at around the 250TB mark, and I set swappiness to 0.


On Thu, Apr 16, 2015 at 12:54 PM, Soren Harward <> wrote:
On Thu, Apr 16, 2015 at 10:24 AM, Anthony Martin
<> wrote:
> Also as both Rich and Rich said the small performance increase you
> would get isn't really worth the damage to you SSD.

Recent testing stats [0] 've seen are that consumer-grade SSDs are
good for at least 500TB of writes, and many survive well past 2PB.  So
they're unlikely to be significantly degraded even by using them for a
swap drive.  Unless you've got so little swap you're continuously
paging in and out, which case you should spend the money on RAM


Soren Harward
Philadelphia Linux Users Group         --
Announcements -
General Discussion  --

Philadelphia Linux Users Group         --
Announcements -
General Discussion  --