Re: Dual Xeon 2.6GHz, Supermicro X5DPA-TGM (SerialATA): 2.4.x causessystem pauses, 2.6.0-test6 works fine

[Nick Piggin]

bill davidsen wrote:

> In article <20031007181339.GB1239@xxxxxxxx>,
> Taner Halicioglu  <taner@xxxxxxxxx> wrote:
>
> | Hi, I just built a new system and under all the 2.4.x kernels I tried (latest
> | redhat, and stock 2.4.22 as well) I would have 10-20s system pauses during
> | stress testing (a simple kernel compile loop, using make -j4) - appeared to
> | be disk subsystem, as I could change windows in screen, and network was
> | working fine.  I tried several APIC and ACPI settings to no avail.  I tried
> | disabling Hyperthreading - no dice.  I tried running a UP kernel - no dice.
> | 
> | Upon installing the 2.6.0-test6 kernel, the pauses were gone!  (for the most
> | part... have an occasional 2s pause, but that is considerably better than
> | 10-20s ;))
>
> Try booting with elevator=deadline, see if the last pause goes away.

Or try running the compile completely out of tmpfs. That should mostly take
the disk and virtual memroy subsystems out of the picture.


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