Tomasz Chmielewski posted on Wed, 19 Sep 2018 10:43:18 +0200 as excerpted:
> I have a mysql slave which writes to a RAID-1 btrfs filesystem (with
> 4.17.14 kernel) on 3 x ~1.9 TB SSD disks; filesystem is around 40% full.
>
> The slave receives around 0.5-1 MB/s of data from the master over the
>
On 2018/9/20 上午4:11, Hans van Kranenburg wrote:
> On 09/19/2018 10:04 PM, Martin Steigerwald wrote:
>> Hans van Kranenburg - 19.09.18, 19:58:
>>> However, as soon as we remount the filesystem with space_cache=v2 -
>>>
writes drop to just around 3-10 MB/s to each disk. If we remount to
On 19.09.2018 23:11, Hans van Kranenburg wrote:
> On 09/19/2018 10:04 PM, Martin Steigerwald wrote:
>> Hans van Kranenburg - 19.09.18, 19:58:
>>> However, as soon as we remount the filesystem with space_cache=v2 -
>>>
writes drop to just around 3-10 MB/s to each disk. If we remount to
On 09/19/2018 10:04 PM, Martin Steigerwald wrote:
> Hans van Kranenburg - 19.09.18, 19:58:
>> However, as soon as we remount the filesystem with space_cache=v2 -
>>
>>> writes drop to just around 3-10 MB/s to each disk. If we remount to
>>> space_cache - lots of writes, system unresponsive. Again
Hans van Kranenburg - 19.09.18, 19:58:
> However, as soon as we remount the filesystem with space_cache=v2 -
>
> > writes drop to just around 3-10 MB/s to each disk. If we remount to
> > space_cache - lots of writes, system unresponsive. Again remount to
> > space_cache=v2 - low writes, system
Hi,
On 09/19/2018 10:43 AM, Tomasz Chmielewski wrote:
> I have a mysql slave which writes to a RAID-1 btrfs filesystem (with
> 4.17.14 kernel) on 3 x ~1.9 TB SSD disks; filesystem is around 40% full.
>
> The slave receives around 0.5-1 MB/s of data from the master over the
> network, which is
On 2018-09-19 04:43 AM, Tomasz Chmielewski wrote:
> I have a mysql slave which writes to a RAID-1 btrfs filesystem (with
> 4.17.14 kernel) on 3 x ~1.9 TB SSD disks; filesystem is around 40% full.
>
> The slave receives around 0.5-1 MB/s of data from the master over the
> network, which is then
On 2018/9/19 下午4:43, Tomasz Chmielewski wrote:
> I have a mysql slave which writes to a RAID-1 btrfs filesystem (with
> 4.17.14 kernel) on 3 x ~1.9 TB SSD disks; filesystem is around 40% full.
This sounds a little concerning.
Not about the the usage percentage itself. but the size and how many
I have a mysql slave which writes to a RAID-1 btrfs filesystem (with
4.17.14 kernel) on 3 x ~1.9 TB SSD disks; filesystem is around 40% full.
The slave receives around 0.5-1 MB/s of data from the master over the
network, which is then saved to MySQL's relay log and executed. In ideal
