From: Steven Rostedt <rostedt@goodmis.org>
To: Tomas Glozar <tglozar@redhat.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-trace-kernel <linux-trace-kernel@vger.kernel.org>
Subject: Re: [GIT PULL] RTLA changes for 7.3
Date: Mon, 10 Aug 2026 21:04:25 -0400 [thread overview]
Message-ID: <20260810210425.61435b0b@robin> (raw)
In-Reply-To: <20260805151055.870722-1-tglozar@redhat.com>
On Wed, 5 Aug 2026 17:10:55 +0200
Tomas Glozar <tglozar@redhat.com> wrote:
> Steven,
>
> The following changes since commit 075b74841bd0065a3bda3440873c747938e69b68:
>
> Linux 7.2-rc6 (2026-08-02 16:24:24 -0700)
>
> are available in the Git repository at:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/tglozar/linux.git tags/rtla-v7.3
>
> for you to fetch changes up to 0ad45018ace734e3a21c8b15280df65b429135d1:
>
> rtla/cli: Unify and improve handling of invalid option arguments (2026-08-05 10:14:40 +0200)
I just tested this on my VM and have the following results from "make check":
Auto-detecting system features:
... libtraceevent: [ on ]
... libtracefs: [ on ]
... libcpupower: [ on ]
... libcheck: [ OFF ]
... libbpf: [ OFF ]
... clang-bpf-co-re: [ on ]
... bpftool-skeletons: [ on ]
libcheck is missing, building without unit tests support.
Please install check-devel/check
libbpf is missing, building without BPF skeleton support.
Please install libbpf-dev/libbpf-devel
[..]
tests/timerlat.t ..
1..75
[..]
not ok 20 - top verify -c/--cpus
# Output match failed: "^Affinity of threads: 0$"
# Affinity of threads:
# Timer Latency
# 0 00:00:04 | IRQ Timer Latency (us) | Thread Timer Latency (us) | Ret user Timer Latency (us)
# CPU COUNT | cur min avg max | cur min avg max | cur min avg max
# 0 #2 | 72 70 71 72 | 128 128 128 129 | 154 154 154 154
# ---------------|----------------------------------------|----------------------------------------|---------------------------------------
# ALL #2 e0 | 70 71 72 | 128 128 129 | 154 154 154
# timerlat hit stop tracing
# ## CPU 0 hit stop tracing, analyzing it ##
# IRQ handler delay: (exit from idle) 58.28 us (45.18 %)
# IRQ latency: 72.60 us
# Timerlat IRQ duration: 32.63 us (25.29 %)
# Blocking thread: 22.43 us (17.39 %)
# swapper/0:0 22.43 us
# ------------------------------------------------------------------------
# Thread latency: 129.00 us (100%)
#
# Max timerlat IRQ latency from idle: 72.60 us in cpu 0
#
# exit code 2
not ok 21 - hist verify -c/--cpus
# Output match failed: "^Affinity of threads: 0$"
# Affinity of threads:
# # RTLA timerlat histogram
# # Time unit is microseconds (us)
# # Duration: 0 00:00:03
# Index IRQ-000 Thr-000 Usr-000
# 80 1 0 0
# 81 1 0 0
# 139 0 2 0
# 165 0 0 1
# over: 0 0 0
# count: 2 2 1
# min: 80 139 165
# avg: 80 139 165
# max: 81 139 165
# ALL: IRQ Thr Usr
# count: 2 2 1
# min: 80 139 165
# avg: 80 139 165
# max: 81 139 165
# timerlat hit stop tracing
# ## CPU 0 hit stop tracing, analyzing it ##
# IRQ handler delay: (exit from idle) 67.05 us (48.08 %)
# IRQ latency: 81.97 us
# Timerlat IRQ duration: 33.38 us (23.94 %)
# Blocking thread: 22.95 us (16.46 %)
# swapper/0:0 22.95 us
# ------------------------------------------------------------------------
# Thread latency: 139.45 us (100%)
#
# Max timerlat IRQ latency from idle: 81.97 us in cpu 0
#
# exit code 2
ok 22 - top verify -H/--house-keeping
ok 23 - hist verify -H/--house-keeping
ok 24 - top verify -k/--kernel-threads
ok 25 - hist verify -k/--kernel-threads
not ok 26 - top verify -u/--user-threads
# Output match failed: "0 kernel threads, 1 user threads"
# 0 kernel threads, 0 user threads
# Timer Latency
# 0 00:00:04 | IRQ Timer Latency (us) | Thread Timer Latency (us) | Ret user Timer Latency (us)
# CPU COUNT | cur min avg max | cur min avg max | cur min avg max
# 0 #2 | 90 78 84 90 | 147 136 141 147 | 163 163 163 163
# ---------------|----------------------------------------|----------------------------------------|---------------------------------------
# ALL #2 e0 | 78 84 90 | 136 141 147 | 163 163 163
# timerlat hit stop tracing
# ## CPU 0 hit stop tracing, analyzing it ##
# IRQ handler delay: (exit from idle) 75.58 us (51.26 %)
# IRQ latency: 90.24 us
# Timerlat IRQ duration: 33.32 us (22.60 %)
# Blocking thread: 23.06 us (15.64 %)
# swapper/0:0 23.06 us
# ------------------------------------------------------------------------
# Thread latency: 147.46 us (100%)
#
# Max timerlat IRQ latency from idle: 90.24 us in cpu 0
#
# exit code 2
not ok 27 - hist verify -u/--user-threads
# Output match failed: "0 kernel threads, 1 user threads"
# 0 kernel threads, 0 user threads
# # RTLA timerlat histogram
# # Time unit is microseconds (us)
# # Duration: 0 00:00:05
# Index IRQ-000 Thr-000 Usr-000
# 75 1 0 0
# 83 1 0 0
# 133 0 1 0
# 140 0 1 0
# 160 0 0 1
# over: 0 0 0
# count: 2 2 1
# min: 75 133 160
# avg: 79 136 160
# max: 83 140 160
# ALL: IRQ Thr Usr
# count: 2 2 1
# min: 75 133 160
# avg: 79 136 160
# max: 83 140 160
# timerlat hit stop tracing
# ## CPU 0 hit stop tracing, analyzing it ##
# IRQ handler delay: (exit from idle) 68.78 us (48.91 %)
# IRQ latency: 83.35 us
# Timerlat IRQ duration: 33.13 us (23.56 %)
# Blocking thread: 22.89 us (16.28 %)
# swapper/0:0 22.89 us
# ------------------------------------------------------------------------
# Thread latency: 140.62 us (100%)
#
# Max timerlat IRQ latency from idle: 83.35 us in cpu 0
#
# exit code 2
[..]
-- Steve
next prev parent reply other threads:[~2026-08-11 1:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-05 15:10 [GIT PULL] RTLA changes for 7.3 Tomas Glozar
2026-08-11 1:04 ` Steven Rostedt [this message]
2026-08-11 7:22 ` Tomas Glozar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260810210425.61435b0b@robin \
--to=rostedt@goodmis.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=tglozar@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.