Re: Stopping the GC thread?

Steven Scholz
2003-06-12T09:35:38Z

David,

>>2.) What happnens when I send a SIGSTOP in the middle of a running GC?
>>Will it stop immediately? Or will it take a while?
>
>
> It'll finish copying the node it's _currently_ garbage-collecting, which
> may involve decompressing up to a page of data, recompressing it and
> writing it out elsewhere. It may also need to wait for erases to
> complete.
>
> Even after it's stopped, if there are erasable blocks on the queue,
> they'll continue to be erased in the background by kupdated. You cannot
> prevent that.

But the impact on system performance done by kupdated is not as
critical as the one that's done by the GC intself, is it?

>
>>I suppose that a few more sectors will be examened and written...
>>(10ms, 100ms, 1000ms ...???)
>
>
> 'sector'? Read http://sources.redhat.com/jffs2/jffs2.pdf
I meant flash sectors.

Steven