On 03/01/16 at 04:16pm, Minfei Huang wrote: > On 03/01/16 at 02:59pm, "Zhou, Wenjian/???" wrote: > > Hi Minfei, > > > > Could you help me test the patch in the attachment? > > Ok. I will verify it with this patch. Feedback will be given in next few > days. Thanks for your effort. > > Thanks > Minfei > > > > > I have run it a thousand times and haven't got a failure. > > Previously, I can always get a failure after running hundreds of times. > > > > But I'm not sure if it is the same problem you have met. Hi. I have verified this patch based on 1.5.9. makedumpfile works well both with and without option --num-threads after applying this patch. There are 128 active CPUs and 4T memory in kdump kernel. with option -d 31 real 3m45.916s with option --num-threads 1 -d 31 real 6m30.286s with option --num-threads 2 -d 31 real 7m45.597s with option --num-threads 8 -d 31 real 13m7.914s with option --num-threads 32 -d 31 real 10m10.248s original makedumpfile with option -d 31 real 4m27.617s Seem more time will be taken by increasing thread number. Thanks Minfei > > > > -- > > Thanks > > Zhou > > > > On 02/24/2016 10:24 AM, Minfei Huang wrote: > > > > > >>On Feb 24, 2016, at 10:20, Zhou, Wenjian/??? <zhouwj-fnst at cn.fujitsu.com> wrote: > > >> > > >>Hi, > > >> > > >>On 02/24/2016 09:43 AM, Minfei Huang wrote: > > >>>On 02/23/16 at 01:47pm, "Zhou, Wenjian/???" wrote: > > >>>>Hello, Minfei, > > >>>> > > >>>>Does it occur every time? > > >>>>If not, I think I have known the reason. > > >>> > > >>>Hi, Wenjian. > > >>> > > >>>This patch is applied directly on version 1.5.9. And makedumpfile hangs > > >>>if option num-thread is appended. > > >>> > > >> > > >>I see. > > >>I'm working on it. > > >> > > >>BTW, did you only test it with --num-threads 128? > > >>How is it with --num-threads 32(or smaller value)? > > > > > >Yes. I have tested with num-thread 1, 2, 8 and 32. Except for ?num-threads 1, > > >all of the test fail. > > > > > >Thanks > > >Minfei
