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minor man update, for overlapSize

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Yann Collet
2017-04-03 14:57:24 -07:00
parent 805c5a3efb
commit a36330a27d
2 changed files with 3 additions and 3 deletions
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programs/zstd.1
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@@ -302,7 +302,7 @@ The minimum \fItlen\fR is 4 and the maximum is 999\.
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.TP
\fBoverlapLog\fR=\fIovlog\fR, \fBovlog\fR=\fIovlog\fR
Select the amount of data reloaded from previous job into next one\. Reloading more data improves compression ratio, but decreases speed\. This parameter is only available if multithreading is enabled\.
Determine \fBoverlapSize\fR, amount of data reloaded from previous job\. This parameter is only available when multithreading is enabled\. Reloading more data improves compression ratio, but decreases speed\.
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.IP
The minimum \fIovlog\fR is 0, and the maximum is 9\. 0 means "no overlap", hence completely independent jobs\. 9 means "full overlap", meaning up to \fBwindowSize\fR is reloaded from previous job\. Reducing \fIovlog\fR by 1 reduces the amount of reload by a factor 2\. Default \fIovlog\fR is 6, which means "reload \fBwindowSize / 8\fR"\. Exception : the maximum compression level (22) has a default \fIovlog\fR of 9\.