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Workaround local maximum in batch tune.

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This commit is contained in:
Andrey Kotlarski 2014-10-07 14:18:34 +03:00
parent ce13609f14
commit d579b7b3e2
1 changed files with 11 additions and 7 deletions
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10
vlf-tune.el
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@ -365,13 +365,17 @@ Suitable for multiple batch operations."
(let ((max-idx (1- (/ (min vlf-tune-max
(/ (1+ vlf-file-size) 2))
vlf-tune-step))))
(cond (linear (vlf-tune-linear types max-idx))
((file-remote-p (or file buffer-file-name))
(if linear
(vlf-tune-linear types max-idx)
(let ((batch-size vlf-batch-size))
(cond ((file-remote-p (or file buffer-file-name))
(vlf-tune-conservative types))
((<= 1 max-idx)
(if (< max-idx 3)
(vlf-tune-conservative types (/ max-idx 2))
(vlf-tune-binary types 0 max-idx)))))))
(vlf-tune-binary types 0 max-idx))))
(if (= batch-size vlf-batch-size) ;local maxima?
(vlf-tune-linear types max-idx)))))))
(defun vlf-tune-optimal-load (types &optional min-idx max-idx)
"Get best batch size according to existing measurements over TYPES.