Messages in this thread | | | Date | Sat, 4 Apr 2009 11:10:03 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [GIT PULL] Ext3 latency fixes |
| |
On Sat, 4 Apr 2009, Jens Axboe wrote: > > > Also, I may be odd, but I really do think latency is more important than > > throughput. When my disk has latencies in the sub-milliseconds, I simply > > do not think it is _acceptable_ to have hickups that affect my workload in > > human-visible terms. > > Not everyone has an Intel SSD.
The thing is, I know for a fact that the hickups were much worse _before_ I had the Intel SSD.
With the SSD, I have to work a lot more to get them. Back when I had regular rotational disks, I definitely did not need to do any 2GB file creation at all. Just standard "yum update" would make my mail reader pause.
Yeah, it's just for a short time, but it's very annoying. One second is quite noticeable when I type something, and it doesn't show up on the screen ("What? My Nehalem cannot keep up with my _typing_?"). 2-3 seconds it really feels bad. And by the time it takes 5+ seconds, I start moving my mouse around just to see whether the computer crashed.
Linus
| |