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Re: [PATCH v3 0/4] Use AF_ALG in checksum utilities
From: |
Assaf Gordon |
Subject: |
Re: [PATCH v3 0/4] Use AF_ALG in checksum utilities |
Date: |
Mon, 7 May 2018 20:00:57 -0600 |
User-agent: |
NeoMutt/20170113 (1.7.2) |
Hello Paul,
On Mon, May 07, 2018 at 12:36:43AM -0700, Paul Eggert wrote:
> Assaf Gordon wrote:
[...]
> > It won't matter to a single user on a desktop, but imagine
> > a shared server at a university, when all of a sudden a sysadmin
> > might see a very very high %SYS load - with almost no way to disagnose
> > what's going on.
>
> Why won't sysadmins be able to diagnose this? Isn't %SYS time accounted for?
It is, and there are certainly tools to do so.
But I think (based on my somewhat limited experience) that it
is harder to diagnose casually. Most tools are geared towards
showning user-mode load.
I believe that a common rule-of-thumb is that long-term sustained
high %SYS load typically indicates a serious problem (veteran
sysadmins are welcomed to chime in and offer their opinion).
regards,
- assaf
- Re: [PATCH v3 0/4] Use AF_ALG in checksum utilities, (continued)
- Re: [PATCH v3 0/4] Use AF_ALG in checksum utilities, Bruno Haible, 2018/05/05
- Re: [PATCH v3 0/4] Use AF_ALG in checksum utilities, Bruno Haible, 2018/05/05
- Re: [PATCH v3 0/4] Use AF_ALG in checksum utilities, Bruno Haible, 2018/05/05
- Re: [PATCH v3 0/4] Use AF_ALG in checksum utilities, Bruno Haible, 2018/05/05
- Re: [PATCH v3 0/4] Use AF_ALG in checksum utilities, Bruno Haible, 2018/05/06