| To: | "Frank Ch. Eigler" <fche@xxxxxxxxxx>, Ken McDonell <kenj@xxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [pcp] scsi indom in linux PMDA - issues! |
| From: | Mark Goodwin <mgoodwin@xxxxxxxxxx> |
| Date: | Wed, 21 Jan 2015 12:52:04 +1100 |
| Cc: | pcp@xxxxxxxxxxx |
| Delivered-to: | pcp@xxxxxxxxxxx |
| In-reply-to: | <y0mtwzkdimv.fsf@xxxxxxxx> |
| References: | <00d101d0350b$a9263430$fb729c90$@internode.on.net> <y0mtwzkdimv.fsf@xxxxxxxx> |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 |
On 01/21/2015 12:31 PM, Frank Ch. Eigler wrote: [..] IMHO the cache should be used for only long-lasting invariant-preserving things like some instance-domains, instead as a general "lookup table for stuff", with ill-defined scope and lifespan and access control. There doesn't seem to be any concurrency control either, e.g. a pmda under pmcd's control calling pmdaCacheOp(SAVE) concurrently with an app using a local context, or two or more of the latter. |
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