2007-08-01 15:45:27

by Nish Aravamudan

Subject: Re: 2.6.22-rc1-mm1 huge pages VM freeze (maybe?)

On 7/31/07, Randy Dunlap <[email protected]> wrote:
> On Tue, 31 Jul 2007 15:44:21 -0600 Zan Lynx wrote:
>
> > I was playing with huge pages and libhugetlbfs. Small programs like
> > "ls" work fine. I tried running Evolution through libhugetlbfs and the
> > system slowly stops running. One interesting thing is the "ps" command,
> > it gets stuck like this:
>
> Do you mean 2.6.22-rc1-mm1 or 2.6.23-rc1-mm1?
>
> There was a hugepage problem fixed very recently, in 2.6.23-rc1 IIRC.

Actually fixed just after 2.6.23-rc1:

git describe 5ab3ee7b1cd5c91eb2272764f9d7d1fe4749681e
v2.6.23-rc1-14-g5ab3ee7

Thanks,
Nish

2007-08-01 15:49:41

by Randy Dunlap

Subject: Re: 2.6.22-rc1-mm1 huge pages VM freeze (maybe?)

Nish Aravamudan wrote:
> On 7/31/07, Randy Dunlap <[email protected]> wrote:
>> On Tue, 31 Jul 2007 15:44:21 -0600 Zan Lynx wrote:
>>
>>> I was playing with huge pages and libhugetlbfs. Small programs like
>>> "ls" work fine. I tried running Evolution through libhugetlbfs and the
>>> system slowly stops running. One interesting thing is the "ps" command,
>>> it gets stuck like this:
>> Do you mean 2.6.22-rc1-mm1 or 2.6.23-rc1-mm1?
>>
>> There was a hugepage problem fixed very recently, in 2.6.23-rc1 IIRC.
>
> Actually fixed just after 2.6.23-rc1:
>
> git describe 5ab3ee7b1cd5c91eb2272764f9d7d1fe4749681e
> v2.6.23-rc1-14-g5ab3ee7

Looks to me like Andrew included Ken's patch in his rc1-mm1 anyway,
so that shouldn't be the issue. Or did I not read mm/hugetlb.c correctly?

--
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***

2007-08-01 15:52:23

by Nish Aravamudan

Subject: Re: 2.6.22-rc1-mm1 huge pages VM freeze (maybe?)

On 8/1/07, Randy Dunlap <[email protected]> wrote:
> Nish Aravamudan wrote:
> > On 7/31/07, Randy Dunlap <[email protected]> wrote:
> >> On Tue, 31 Jul 2007 15:44:21 -0600 Zan Lynx wrote:
> >>
> >>> I was playing with huge pages and libhugetlbfs. Small programs like
> >>> "ls" work fine. I tried running Evolution through libhugetlbfs and the
> >>> system slowly stops running. One interesting thing is the "ps" command,
> >>> it gets stuck like this:
> >> Do you mean 2.6.22-rc1-mm1 or 2.6.23-rc1-mm1?
> >>
> >> There was a hugepage problem fixed very recently, in 2.6.23-rc1 IIRC.
> >
> > Actually fixed just after 2.6.23-rc1:
> >
> > git describe 5ab3ee7b1cd5c91eb2272764f9d7d1fe4749681e
> > v2.6.23-rc1-14-g5ab3ee7
>
> Looks to me like Andrew included Ken's patch in his rc1-mm1 anyway,
> so that shouldn't be the issue. Or did I not read mm/hugetlb.c correctly?

Yeah you're right, the -mm tree has that bug fixed.

Thanks,
Nish