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9555269 Absent Member.
Absent Member.
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NCS and 'top' load average

On an OES2 SLES server running NCS, single CPU core, 'rcnovell-ncs start' sees the "Load average" in 'top' got from .0x-.2x up to 5.x. This happens on all my servers running NCS.

'rcnovell-ncs stop' and "Load average" calms back down.

What does NCS do that causes "Load average" to increase by 5 (presumably indicating a fivefold increase in resource load) when the service is loaded?


READ THIS BEFORE REPLYING:
Please don't take this the wrong way - there are several posts on this topic that haven't been addressed. Please don't respond with guesses or a "this happens to me too". It clearly is an issue. Novell is more likely respond if this thread isn't responded to in a couple of days... Thanks for understanding.
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changju Absent Member.
Absent Member.

Re: NCS and 'top' load average

Short story, this has been fixed in SP2.

Longer story, NCS depends on other components for thread/process management before SP2. We switch to Linux native APIs (to improve performance and manageability) in SP2.


Regards,

Changju

Here is what I have on my SP2 cluster,

#2 root@CG_05:~ # cluster view

Cluster cgao_sp2_gmc_cluster
This node CG_05 [ epoch 6 master node CG_05 ]
Cluster nodes [ CG_01, CG_02, CG_03, CG_04, CG_05 ]

#3 root@CG_05:~ # uptime
8:59am up 2 days 19:38, 1 user, load average: 0.03, 0.06, 0.08



9555269;1870129 wrote:
On an OES2 SLES server running NCS, single CPU core, 'rcnovell-ncs start' sees the "Load average" in 'top' got from .0x-.2x up to 5.x. This happens on all my servers running NCS.

'rcnovell-ncs stop' and "Load average" calms back down.

What does NCS do that causes "Load average" to increase by 5 (presumably indicating a fivefold increase in resource load) when the service is loaded?


READ THIS BEFORE REPLYING:
Please don't take this the wrong way - there are several posts on this topic that haven't been addressed. Please don't respond with guesses or a "this happens to me too". It clearly is an issue. Novell is more likely respond if this thread isn't responded to in a couple of days... Thanks for understanding.
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9555269 Absent Member.
Absent Member.

Re: NCS and 'top' load average

Are there any other products in OES that have this feature?
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9555269 Absent Member.
Absent Member.

Re: NCS and 'top' load average

and by the way, whats the ETA for SP2?
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changju Absent Member.
Absent Member.

Re: NCS and 'top' load average

I am authorized to say that SP2 will be available in Q4 (11/09 - 1/10).

As for why NCS increases server load, we depend on other components for process/thread management and NCS has no control. I think NCS threads/processes are reported to the OS differently.

Starting from SP2, we switch to Linux native APIs.

Best regards,

Changju


9555269;1870129 wrote:
On an OES2 SLES server running NCS, single CPU core, 'rcnovell-ncs start' sees the "Load average" in 'top' got from .0x-.2x up to 5.x. This happens on all my servers running NCS.

'rcnovell-ncs stop' and "Load average" calms back down.

What does NCS do that causes "Load average" to increase by 5 (presumably indicating a fivefold increase in resource load) when the service is loaded?


READ THIS BEFORE REPLYING:
Please don't take this the wrong way - there are several posts on this topic that haven't been addressed. Please don't respond with guesses or a "this happens to me too". It clearly is an issue. Novell is more likely respond if this thread isn't responded to in a couple of days... Thanks for understanding.
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