Displaying 5 results from an estimated 5 matches for "200000k".
Did you mean:
200000
2016 Jun 01
2
Slow RAID Check/high %iowait during check after updgrade from CentOS 6.5 -> CentOS 7.2
...k, and it ran at the expected speed overnight. I started
> kafka this morning, and the raid check's speed immediately dropped down to
> ~2000K/Sec.
>
> I then enabled the write-back cache on the drives (hdparm -W1 /dev/sd*).
> The raid check is now running between 100000K/Sec and 200000K/Sec, and has
> been for several hours (it fluctuates, but seems to stay within that
> range). Write-back cache is NOT enabled for the drives on the hosts we
> haven't upgraded yet, but the speeds are similar (I kicked off a raid
> check on one of our CentOS 6 hosts as well, the wind...
2016 Jun 01
0
Slow RAID Check/high %iowait during check after updgrade from CentOS 6.5 -> CentOS 7.2
...expected speed overnight. I started
>> kafka this morning, and the raid check's speed immediately dropped down to
>> ~2000K/Sec.
>>
>> I then enabled the write-back cache on the drives (hdparm -W1 /dev/sd*).
>> The raid check is now running between 100000K/Sec and 200000K/Sec, and has
>> been for several hours (it fluctuates, but seems to stay within that
>> range). Write-back cache is NOT enabled for the drives on the hosts we
>> haven't upgraded yet, but the speeds are similar (I kicked off a raid
>> check on one of our CentOS 6 hosts a...
2016 Jun 13
1
Slow RAID Check/high %iowait during check after updgrade from CentOS 6.5 -> CentOS 7.2
.... I started
> >> kafka this morning, and the raid check's speed immediately dropped down to
> >> ~2000K/Sec.
> >>
> >> I then enabled the write-back cache on the drives (hdparm -W1 /dev/sd*).
> >> The raid check is now running between 100000K/Sec and 200000K/Sec, and has
> >> been for several hours (it fluctuates, but seems to stay within that
> >> range). Write-back cache is NOT enabled for the drives on the hosts we
> >> haven't upgraded yet, but the speeds are similar (I kicked off a raid
> >> check on one of...
2016 May 27
2
Slow RAID Check/high %iowait during check after updgrade from CentOS 6.5 -> CentOS 7.2
All of our Kafka clusters are fairly write-heavy. The cluster in question is our second-heaviest ? we haven?t yet upgraded the heaviest, due to the issues we?ve been experiencing in this one.
Here is an iostat example from a host within the same cluster, but without the RAID check running:
[root at r2k1 ~] # iostat -xdmc 1 10
Linux 3.10.0-327.13.1.el7.x86_64 (r2k1) 05/27/16 _x86_64_ (32 CPU)
2016 Jun 01
0
Slow RAID Check/high %iowait during check after updgrade from CentOS 6.5 -> CentOS 7.2
...d kicked off a disk check, and it ran at the expected speed overnight. I started kafka this morning, and the raid check's speed immediately dropped down to ~2000K/Sec.
I then enabled the write-back cache on the drives (hdparm -W1 /dev/sd*). The raid check is now running between 100000K/Sec and 200000K/Sec, and has been for several hours (it fluctuates, but seems to stay within that range). Write-back cache is NOT enabled for the drives on the hosts we haven't upgraded yet, but the speeds are similar (I kicked off a raid check on one of our CentOS 6 hosts as well, the window seems to be 15000...