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Use no back end compression for blocks smaller than 64 bytes to avoid issues to do with minimum buffer size and minimum match sizes of the rzip preprocessing.

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Con Kolivas 2012-07-07 20:43:44 +10:00
parent 9430b6ff4a
commit 081265f1c9
1 changed files with 5 additions and 1 deletions
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6
stream.c
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@ -1267,7 +1267,11 @@ static void *compthread(void *data)
* of succeeding in allocating more ram */
fsync(ctis->fd);
retry:
if (!NO_COMPRESS && cti->c_len) {
/* Very small buffers have issues to do with minimum amounts of ram
* allocatable to a buffer combined with the MINIMUM_MATCH of rzip
* being 31 bytes so don't bother trying to compress anything less
* than 64 bytes. */
if (!NO_COMPRESS && cti->c_len >= 64) {
if (LZMA_COMPRESS)
ret = lzma_compress_buf(control, cti);
else if (LZO_COMPRESS)