Gentoo Archives: gentoo-user

From: Alan McKinnon <alan.mckinnon@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] gentoo on ssds? intel anyone?
Date: Sun, 20 Dec 2009 08:09:50
Message-Id: 200912200914.00529.alan.mckinnon@gmail.com
In Reply to: Re: [gentoo-user] gentoo on ssds? intel anyone? by "Stefan G. Weichinger"
1 On Saturday 19 December 2009 12:19:05 Stefan G. Weichinger wrote:
2 > Am 19.12.2009 09:08, schrieb Stroller:
3 > >> Could anyone comment?
4 > >
5 > > Might it help if you said WHY you're unimpressed?
6 >
7 > might be ;-)
8 >
9 > It seems as if my system doesn't benefit that much:
10 >
11 > With 8 gigs of RAM, suspend-to-ram, preload and only a handful of rather
12 > lightweight binaries in regular use this system is already pretty fast
13 > with hdds only.
14 >
15 > I expected more WOW in terms of overall speed ...
16
17 SSDs are not a magic bullet, it's unlikely they will give you a killer
18 performance improvement that makes you go "WOW!!!"
19
20 SSDs suck at random writes.
21 Typical usage scenario on a workstation is lots of random writes compared to
22 relatively few random reads - reads tend not to be all that random as you
23 re-read the same thing often and it gets cached.
24
25 Intel SSDs are far superior at random writes than any other SSD out there but
26 it's still nowhere near as optimised as spinning drives, and kernels by and
27 large are still optimised for spinning drives too.
28
29 This may account for your overall feeling of under-whelmedness why still
30 seeing a significant boot-time speed up. You also have enough RAM so that
31 almost an entire typical workstation session could fit in RAM and seldom touch
32 the disk especially with a large interval between disk syncs
33
34 --
35 alan dot mckinnon at gmail dot com

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Re: [gentoo-user] gentoo on ssds? intel anyone? "Stefan G. Weichinger" <lists@×××××.at>