[PATCH 0/3] Calculate memory access latency stats

From: Colton Lewis <coltonlewis@google.com>
To: kvm@vger.kernel.org
Cc: pbonzini@redhat.com, maz@kernel.org, dmatlack@google.com,
	seanjc@google.com, bgardon@google.com, oupton@google.com,
	ricarkol@google.com, Colton Lewis <coltonlewis@google.com>
Subject: [PATCH 0/3] Calculate memory access latency stats
Date: Tue, 15 Nov 2022 17:32:55 +0000	[thread overview]
Message-ID: <20221115173258.2530923-1-coltonlewis@google.com> (raw)

Sample the latency of memory accesses in dirty_log_perf_test and
report summary stats to give a picture of the latency
distribution. Specifically, focus on the right tail with the 50th,
90th, and 99th percentile reported in ns.

This patch depends on my previous dirty_log_perf_test patch adding the
ability to randomize memory accesses. It needs the pRNG to do random
sampling.

https://lore.kernel.org/kvm/20221107182208.479157-1-coltonlewis@google.com/

Colton Lewis (3):
  KVM: selftests: Allocate additional space for latency samples
  KVM: selftests: Collect memory access latency samples
  KVM: selftests: Print summary stats of memory latency distribution

 .../selftests/kvm/dirty_log_perf_test.c       |   2 +
 .../selftests/kvm/include/perf_test_util.h    |   2 +
 .../selftests/kvm/lib/perf_test_util.c        | 103 +++++++++++++++++-
 3 files changed, 104 insertions(+), 3 deletions(-)

--
2.38.1.431.g37b22c650d-goog