[17/40] xfs/442: rescale load so it's not exponential

Message ID	20241127045403.3665299-18-david@fromorbit.com (mailing list archive)
State	New
Headers	show Received: from mail-pg1-f178.google.com (mail-pg1-f178.google.com [209.85.215.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EE2344689 for <fstests@vger.kernel.org>; Wed, 27 Nov 2024 04:59:57 +0000 (UTC) From: Dave Chinner <david@fromorbit.com> To: fstests@vger.kernel.org Subject: [PATCH 17/40] xfs/442: rescale load so it's not exponential Date: Wed, 27 Nov 2024 15:51:47 +1100 Message-ID: <20241127045403.3665299-18-david@fromorbit.com> In-Reply-To: <20241127045403.3665299-1-david@fromorbit.com> References: <20241127045403.3665299-1-david@fromorbit.com> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit
Series	fstests: concurrent test execution \| expand [RFC,00/40] fstests: concurrent test execution [01/40] xfs/448: get rid of assert-on-failure [02/40] fstests: cleanup fsstress process management [03/40] fuzzy: don't use killall [04/40] fstests: per-test dmflakey instances [05/40] fstests: per-test dmerror instances [06/40] fstests: per-test dmhuge instances [07/40] fstests: per-test dmthin instances [08/40] fstests: per-test dmdust instances [09/40] fstests: per-test dmdelay instances [10/40] fstests: fix DM device creation/removal vs udev races [11/40] fstests: use syncfs rather than sync [12/40] fstests: clean up mount and unmount operations [13/40] fstests: clean up loop device instantiation [14/40] fstests: xfs/227 is really slow [15/40] fstests: mark tests that are unreliable when run in parallel [16/40] fstests: use udevadm wait in preference to settle [17/40] xfs/442: rescale load so it's not exponential [18/40] xfs/176: fix broken setup code [19/40] xfs/177: remove unused slab object count location checks [20/40] fstests: remove uses of killall where possible [21/40] generic/127: reduce runtime [22/40] quota: system project quota files need to be shared [23/40] dmesg: reduce noise from other tests [24/40] fstests: stop using /tmp directly [25/40] fstests: scale some tests for high CPU count sanity [26/40] generic/310: cleanup killing background processes [27/40] filter: handle mount errors from CONFIG_BLK_DEV_WRITE_MOUNTED=y [28/40] filters: add a filter that accepts EIO instead of other errors [29/40] generic/085: general cleanup for reliability and debugging [30/40] fstests: don't use directory stacks [31/40] fstests: clean up a couple of dm-flakey tests [32/40] fstests: clean up termination of various tests [33/40] vfstests: some tests require the testdir to be shared [34/40] xfs/629: single extent files should be within tolerance [35/40] xfs/076: fix broken mkfs filtering [36/40] fstests: capture some failures to seqres.full [37/40] fstests: always use fail-at-unmount semantics for XFS [38/40] generic/062: don't leave debug files in $here on failure [39/40] fstests: quota grace periods unreliable under load [40/40] fstests: check-parallel

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20241127045403.3665299-18-david@fromorbit.com (mailing list archive)

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Headers

From: Dave Chinner <david@fromorbit.com>
To: fstests@vger.kernel.org
Subject: [PATCH 17/40] xfs/442: rescale load so it's not exponential
Date: Wed, 27 Nov 2024 15:51:47 +1100
Message-ID: <20241127045403.3665299-18-david@fromorbit.com>
In-Reply-To: <20241127045403.3665299-1-david@fromorbit.com>
References: <20241127045403.3665299-1-david@fromorbit.com>
Precedence: bulk
MIME-Version: 1.0
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Series

fstests: concurrent test execution | expand

Commit Message

Dave Chinner Nov. 27, 2024, 4:51 a.m. UTC

From: Dave Chinner <dchinner@redhat.com>

....
xfs/442 491
....

xfs/442 takes a long time to run because it is scaling the load
by the number of processes it is going to run on twice. It scales
the number of operations by the number of processes it is going to
run, meaning that doubling the number of processes quadruples the
runtime.

Reduce it to scale linearly by fixing the number of ops it runs per
process.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
 tests/xfs/442 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/xfs/442 b/tests/xfs/442
index 58e56b5d2..d539fa5e0 100755
--- a/tests/xfs/442
+++ b/tests/xfs/442
@@ -63,7 +63,7 @@  _scratch_mkfs_sized $((1600 * 1048576)) > $seqres.full 2>&1
 _scratch_mount >> $seqres.full 2>&1
 
 nr_cpus=$((LOAD_FACTOR * 4))
-nr_ops=$((25000 * nr_cpus * TIME_FACTOR))
+nr_ops=$((25000 * TIME_FACTOR))
 _run_fsstress -w -d $SCRATCH_MNT -n $nr_ops -p $nr_cpus
 
 echo "Check quota before remount"

[17/40] xfs/442: rescale load so it's not exponential

Commit Message

Patch