From: Dave Hansen <dave.hansen@intel.com>
To: kernel test robot <yujie.liu@intel.com>,
Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Cc: oe-lkp@lists.linux.dev, lkp@intel.com,
linux-kernel@vger.kernel.org,
Dave Hansen <dave.hansen@linux.intel.com>,
kvm@vger.kernel.org, ying.huang@intel.com, feng.tang@intel.com,
fengwei.yin@intel.com
Subject: Re: [linus:master] [x86/bugs] 6613d82e61: stress-ng.mutex.ops_per_sec -7.9% regression
Date: Mon, 4 Mar 2024 09:58:53 -0800 [thread overview]
Message-ID: <a1a2da34-af20-471d-a637-ddd749ce809a@intel.com> (raw)
In-Reply-To: <202403041300.a7fb1462-yujie.liu@intel.com>
On 3/3/24 21:53, kernel test robot wrote:
> kernel test robot noticed a -7.9% regression of stress-ng.mutex.ops_per_sec on:
>
> commit: 6613d82e617dd7eb8b0c40b2fe3acea655b1d611 ("x86/bugs: Use ALTERNATIVE() instead of mds_user_clear static key")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
This _looks_ like noise to me.
Some benchmarks went up, some went down. The differential profile shows
random gunk that basically amounts to "my computer is slow" because it's
mostly things that change when the result changes, like:
> 182670 +9.0% 199032 stress-ng.mutex.nanosecs_per_mutex
Does anyone think there's something substantial to chase after here?
next prev parent reply other threads:[~2024-03-04 17:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-04 5:53 kernel test robot
2024-03-04 17:58 ` Dave Hansen [this message]
2024-03-05 5:37 ` Feng Tang
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