On 3/12/21 12:25 PM, yf chu wrote:
The applications on all those servers are same. They are working on same data.
I still don't know why the size of buff/cache is different between different
servers.
You might want to check the kernel threads...
If you use md arrays you can have very high load
The applications on all those servers are same. They are working on same data.
I still don't know why the size of buff/cache is different between different
servers.
At 2021-03-12 16:35:09, "Simon Matter" wrote:
>Hi,
>
>You said that you have multiple systems running this same app
Hi,
You said that you have multiple systems running this same application.
But, do they work with the same data on disk or are there big differences?
From how I understand the figures below, your buff/cache seems a bit low
if you read a lot of data from disk. If you read a lot of data and
filesys
I haven't been following this thread closely, so may be off target.
When pages are moved out of the working set they are either "clean" or
"dirty". Clean pages have not been modified since they were originally
moved into memory whereas dirty pages have been changed. A dirty page
can become c
yes. I suspect it has something to do with swapping. but swap is turned off on
this server.
here is the result of free -m.
totalusedfree shared buff/cache available
Mem: 128174 97449 2440041586325 25232
Swap: 0
yes. I suspect it has something to do with swapping. but swap is turned off on
this server.
here is the result of free -m.
totalusedfree shared buff/cache available
Mem: 128174 97449 2440041586325 25232
Swap: 0
On Sat, Mar 6, 2021 at 6:37 AM yf chu wrote:
>
> no, not vm
>
>
>
>
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> yf chu
> |
> |
> 邮箱：cyf...@163.com
> |
>
> 签名由 网易邮箱大师 定制
>
> On 03/05/2021 23:37, Matthew Miller wrote:
> On Fri, Mar 05, 2021 at 03:54:14PM +0800, yf chu wrote:
> > We have experienced a very weird problem. The load of th
no, not vm
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yf chu
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邮箱：cyf...@163.com
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签名由 网易邮箱大师 定制
On 03/05/2021 23:37, Matthew Miller wrote:
On Fri, Mar 05, 2021 at 03:54:14PM +0800, yf chu wrote:
> We have experienced a very weird problem. The load of the server machine is
> very high. We use "pidstat" and find that the disk re
On Fri, Mar 05, 2021 at 03:54:14PM +0800, yf chu wrote:
> We have experienced a very weird problem. The load of the server machine is
> very high. We use "pidstat" and find that the disk read io is very high.
Is this system a VM?
--
Matthew Miller
Fedora Project Leader
__
the processes on this server do not involve io read operation. the code is
developed by ourself. so I don't know where these io read come from.
by the way, pidstat only show disk io ,not network io, is that right?
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yf chu
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邮箱：cyf...@163.com
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签名由 网易邮箱大师 定制
On 03/05/2021 16:33, Simon Ma
I use pidstat and find all processes on this server perform read operation. but
I don't know where these read operation come from
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yf chu
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邮箱：cyf...@163.com
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签名由 网易邮箱大师 定制
On 03/05/2021 23:03, Joshua Kramer wrote:
Install a program called iotop. iotop will show you, in real time,
whi
Install a program called iotop. iotop will show you, in real time,
which processes are using the most i/o bandwidth.
On Fri, Mar 5, 2021 at 2:54 AM yf chu wrote:
>
> We have experienced a very weird problem. The load of the server machine is
> very high. We use "pidstat" and find that the disk
Hi,
> We have experienced a very weird problem. The load of the server machine
> is very high. We use "pidstat" and find that the disk read io is very
> high.
If disk read IO is very high, what does it read and what generates the reads?
Simon
> But the processes running on this server do not pe
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