Re: [PATCH v4] Improve the performance of --num-threads -d 31

Hi Minfei, I have some questions. If the value of num-threads is 8, 1. How much is the free memory before running makedumpfile failed? 2. How much is the free memory before running makedumpfile success? And the following result is very strange if all cache has been dropped. makedumpfile --num

Re: [PATCH v15 03/20] arm64: Convert hcalls to use HVC immediate value

Hi, On Tue, 2016-03-15 at 13:50 +, Dave Martin wrote: > On Mon, Mar 14, 2016 at 05:48:00PM +, Geoff Levand wrote: > > The existing arm64 hcall implementations are limited in that they only > > allow for two distinct hcalls; with the x0 register either zero or not > > zero. Also, the API o

Re: [PATCH v15 03/20] arm64: Convert hcalls to use HVC immediate value

Hi On Mon, Mar 14, 2016 at 05:48:00PM +, Geoff Levand wrote: > The existing arm64 hcall implementations are limited in that they only > allow for two distinct hcalls; with the x0 register either zero or not > zero. Also, the API of the hyp-stub exception vector routines and the > KVM exceptio

Re: [PATCH v4] Improve the performance of --num-threads -d 31

On 03/15/16 at 03:12pm, "Zhou, Wenjian/周文剑" wrote: > Hello Minfei, > > I guess the result is affected by the caches. > How about executing the following command before running makedumpfile each > time? > # echo 3 > /proc/sys/vm/drop_caches Hi, Zhou. Seem there is a bug during dumping vmcore wit

Re: [PATCH v4] Improve the performance of --num-threads -d 31

Hi Minfei, What do you mean by "fails to dump vmcore" exactly? Do you mean makedumpfile was interrupted? Or just mean the performance is abnormal? -- Thanks Zhou On 03/15/2016 02:34 PM, Minfei Huang wrote: Hi, Zhou. I have applied this patch base on 1.5.9. There are several testcases I have t

Re: [PATCH v4] Improve the performance of --num-threads -d 31

On 03/15/16 at 03:12pm, "Zhou, Wenjian/周文剑" wrote: > Hello Minfei, > > I guess the result is affected by the caches. > How about executing the following command before running makedumpfile each > time? > # echo 3 > /proc/sys/vm/drop_caches All of cache will be dropped before starting new test. H

Re: [PATCH v4] Improve the performance of --num-threads -d 31

Hello Minfei, I guess the result is affected by the caches. How about executing the following command before running makedumpfile each time? # echo 3 > /proc/sys/vm/drop_caches -- Thanks Zhou On 03/15/2016 02:34 PM, Minfei Huang wrote: Hi, Zhou. I have applied this patch base on 1.5.9. There