Non-recursive shell sort#101
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funny-falcon wants to merge 1 commit intoianlancetaylor:masterfrom
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Shell-sort is straight-forward non-recursive algorithm. It is comparable in performance to naive qsort up to million items.
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The libbacktrace sort time is a big percentage of its performance on large programs. I have not seen any complaints about running out of stack space during the sort. So this doesn't seem like a desirable change. Have you run any benchmarks on large programs? |
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I've integrated libbacktrace into PostgreSQL, and by 'perf record' shell sort is just a bit slower (3-7%). (ie 12% vs 13% of total cpu usage). To be honestly, looking on Given all array elements passed to backtrace_qsort are pointer-aligned, I've made PR #102. It makes sorting 2.5 times faster. |
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Shell-sort is straight-forward non-recursive algorithm.
It is comparable in performance to naive qsort up to million items.