Displaying 4 results from an estimated 4 matches for "collectl".
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2008 Apr 15
4
NFS Performance
Hi,
With help from Oleg we got the right patches applied and NFS working
well. Maximum performance was about 60 MB/sec. Last week that dropped
to about 12.5 MB/sec and I cannot find a reason. Lustre clients all
obtain 100+ MB/sec on GigE. Each OST is good for 270 MB/sec. When
mounting the client on one of the OSSs I get 230 MB/sec. Seems the
speed is there. How can NFS and Lustre be tuned
2010 Jun 10
2
Possible Issue with Samba Blocking I/O and CPU
...o come in from the network, but SMB traffic stops going out
TO the network. This same pattern has been observed on multiple
servers, so the problem isn't caused by some bad RAID card or other
piece of defective hardware.
Looking at data from /proc (this is easy using a program like
"collectl"), at the moment of the dropout, you can see that "idle" time
goes to 0 on any CPU core running smbd processes, and wait goes very
high. On the core handling the interrupts for the RAID card driver,
"idle" time goes to 100 percent. This is running the 2.6.32.11 Linux...
2016 Jan 29
5
bonding (IEEE 802.3ad) not working with qemu/virtio
On 01/29/2016 10:45 PM, Jay Vosburgh wrote:
> Nikolay Aleksandrov <nikolay at cumulusnetworks.com> wrote:
>
>> On 01/25/2016 05:24 PM, Bj?rnar Ness wrote:
>>> As subject says, 802.3ad bonding is not working with virtio network model.
>>>
>>> The only errors I see is:
>>>
>>> No 802.3ad response from the link partner for any adapters
2016 Jan 29
5
bonding (IEEE 802.3ad) not working with qemu/virtio
On 01/29/2016 10:45 PM, Jay Vosburgh wrote:
> Nikolay Aleksandrov <nikolay at cumulusnetworks.com> wrote:
>
>> On 01/25/2016 05:24 PM, Bj?rnar Ness wrote:
>>> As subject says, 802.3ad bonding is not working with virtio network model.
>>>
>>> The only errors I see is:
>>>
>>> No 802.3ad response from the link partner for any adapters