From: 0bo0 <0.bugs.only.0@gmail.com>
To: linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: does btrfs have RAID I/O throughput (un)limiting sysctls, similar to md?
Date: Fri, 5 Feb 2010 16:37:24 -0800 [thread overview]
Message-ID: <c67eed301002051637p1288e120tb37c649ac44d40c@mail.gmail.com> (raw)
i've a 4 drive array connected via a PCIe SATA card.
per OS (opensuse) default, md RAID I/O performance was being limited by,
cat /proc/sys/dev/raid/speed_limit_min
1000
cat /proc/sys/dev/raid/speed_limit_max
200000
changing,
echo "dev.raid.speed_limit_min=100000" >> /etc/sysctl.conf
echo "dev.raid.speed_limit_max=600000" >> /etc/sysctl.conf
enabled full/best I/O throughput.
does btrfs have a similar construct that I need to set/tweak for
maximum I/O throughput?
next reply other threads:[~2010-02-06 0:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-06 0:37 0bo0 [this message]
2010-02-06 13:10 ` does btrfs have RAID I/O throughput (un)limiting sysctls, similar to md? Daniel J Blueman
2010-02-06 14:48 ` 0bo0
2010-02-07 11:48 ` Martin Steigerwald
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