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Wysocki" , Viresh Kumar , Ingo Molnar , Peter Zijlstra , Vincent Guittot , Juri Lelli Cc: Steven Rostedt , Dietmar Eggemann , Ben Segall , Mel Gorman , Valentin Schneider , Christian Loehle , Hongyan Xia , John Stultz , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20240728184551.42133-1-qyousef@layalina.io> Content-Language: en-US From: Anjali K In-Reply-To: <20240728184551.42133-1-qyousef@layalina.io> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: ty1IRVPvPrRYZTNQU7ANS6Pxd5XiQ0w0 X-Proofpoint-ORIG-GUID: FYLorLhiWLWSPUEUUKsj3t3mlEz4qhjB X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-07_10,2024-10-07_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 malwarescore=0 spamscore=0 suspectscore=0 mlxscore=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 impostorscore=0 bulkscore=0 mlxlogscore=599 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410070121 Hi, I tested this patch to see if it causes any regressions on bare-metal power9 systems with microbenchmarks. The test system is a 2 NUMA node 128 cpu powernv power9 system. The conservative governor is enabled. I took the baseline as the 6.10.0-rc1 tip sched/core kernel. No regressions were found. +------------------------------------------------------+--------------------+----------+ |                     Benchmark                        |      Baseline      | Baseline | |                                                      |  (6.10.0-rc1 tip   | + patch  | |                                                      |  sched/core)       |          | +------------------------------------------------------+--------------------+----------+ |Hackbench run duration (sec)                          |         1          |   1.01   | |Lmbench simple fstat (usec)                           |         1          |   0.99   | |Lmbench simple open/close (usec)                      |         1          |   1.02   | |Lmbench simple read (usec)                            |         1          |   1      | |Lmbench simple stat (usec)                            |         1          |   1.01   | |Lmbench simple syscall (usec)                         |         1          |   1.01   | |Lmbench simple write (usec)                           |         1          |   1      | |stressng (bogo ops)                                   |         1          |   0.94   | |Unixbench execl throughput (lps)                      |         1          |   0.97   | |Unixbench Pipebased Context Switching throughput (lps)|         1          |   0.94   | |Unixbench Process Creation (lps)                      |         1          |   1      | |Unixbench Shell Scripts (1 concurrent) (lpm)          |         1          |   1      | |Unixbench Shell Scripts (8 concurrent) (lpm)          |         1          |   1.01   | +------------------------------------------------------+--------------------+----------+ Thank you, Anjali K