40 lines
1.5 KiB
Diff
40 lines
1.5 KiB
Diff
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From 9d6ba825d8c8635e217f7596fb4401c9ef9d408a Mon Sep 17 00:00:00 2001
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From: Alexandre Frade <kernel@xanmod.org>
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Date: Wed, 11 May 2022 18:56:51 +0000
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Subject: [PATCH 07/19] XANMOD: block/mq-deadline: Increase write priority to
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improve responsiveness
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Signed-off-by: Alexandre Frade <kernel@xanmod.org>
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---
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block/mq-deadline.c | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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--- a/block/mq-deadline.c
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+++ b/block/mq-deadline.c
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@@ -4,6 +4,9 @@
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* for the blk-mq scheduling framework
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*
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* Copyright (C) 2016 Jens Axboe <axboe@kernel.dk>
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+ *
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+ * Tunes for responsiveness by Alexandre Frade
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+ * (C) 2022 Alexandre Frade <kernel@xanmod.org>
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*/
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#include <linux/kernel.h>
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#include <linux/fs.h>
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@@ -28,13 +31,13 @@
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* See Documentation/block/deadline-iosched.rst
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*/
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static const int read_expire = HZ / 2; /* max time before a read is submitted. */
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-static const int write_expire = 5 * HZ; /* ditto for writes, these limits are SOFT! */
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+static const int write_expire = HZ; /* ditto for writes, these limits are SOFT! */
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/*
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* Time after which to dispatch lower priority requests even if higher
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* priority requests are pending.
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*/
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static const int prio_aging_expire = 10 * HZ;
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-static const int writes_starved = 2; /* max times reads can starve a write */
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+static const int writes_starved = 1; /* max times reads can starve a write */
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static const int fifo_batch = 16; /* # of sequential requests treated as one
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by the above parameters. For throughput. */
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