On 9/10/12 11:04 AM, Shawn Walker wrote:
I assure you that a significant amount of time has been spent doing
performance analysis and testing on pkg(5) (along with the development
resulting from it) on a continual basis. I'm confident that you're
not going to find any obvious low-hanging performance fruit.
I would encourage you to wait for the next update release of Solaris
11; you'll find significant performance improvements.
well, thank you for the glimpse into "coming attractions"... that is
somewhat encouraging.
That being said: how much of a performance improvement?
Even if you managed to do the extreme, and "cut the time in half", in my
opinion, that still needs work, since that would still make it take 15
seconds, to install a package with *one file in it*, and no special
actions. It should be under 10 seconds for a trivial case.
Based soley on my further analysis of my truss, I'd say that there is
indeed "obvious low-hanging fruit".
It would appear to spend the majority of its time, going through
individual files under /var/pkg/publisher/solaris/pkg
Timestampwise, from the 6-second mark , all the way through 23 seconds.
This is not scalable. Both in theory, and clearly not in practice, either.
I thought pkg was supposed to use some kind of internal "database" ?
Cross-referencing with the manpage, I guess it only uses one for
*search*, but not for actual pkg operation?
This is backwards. Priority should be on speed of normal operation, not
on esoteric searches.
For a comparison, "yum install rxvt" takes 7 seconds.
That's WITH pulling in a dependency, AND dealing with a "continue(y/N)"
prompt. Not to mention a cross-internet download, rather than local
package, which is what my above test was.
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