Re: [LTP] [PATCH] Set tunable value of min_free_kbytes lower

[Zhouping Liu <zliu@redhat.com>]

----- Original Message -----
> From: "shuang qiu" <shuang.qiu@oracle.com>
> To: ltp-list@lists.sourceforge.net
> Sent: Thursday, August 23, 2012 2:43:01 PM
> Subject: [LTP] [PATCH] Set tunable value of min_free_kbytes lower
> 
> From: Shuang Qiu <shuang.qiu@oracle.com>
> 
> The value of min_free_kbytes is set too high(half of mem_free) during
> testing min_free_kbytes tunable.It often cause the system to become
> out-of-memory.Using 20% of mem_free to avoid oom and system hang.

Thanks for the patch, I will test the patch, will provide feedback ASAP.

> ---
>  testcases/kernel/mem/tunable/min_free_kbytes.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/testcases/kernel/mem/tunable/min_free_kbytes.c
> b/testcases/kernel/mem/tunable/min_free_kbytes.c
> index 00ead04..8a03f85 100644
> --- a/testcases/kernel/mem/tunable/min_free_kbytes.c
> +++ b/testcases/kernel/mem/tunable/min_free_kbytes.c
> @@ -128,7 +128,7 @@ static void test_tune(unsigned long
> overcommit_policy)
>  		/* case2 */
>  		else {
>  			memfree = read_meminfo("MemFree:");
> -			tune = memfree / 2;
> +			tune = memfree / 5;
>  			set_sys_tune("min_free_kbytes", tune, 1);
>  		}
>  
> --
> 1.7.7
> 
> 
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-- 
Thanks,
Zhouping

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