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DLPX-44812 integrate EP-220 large memory scalability

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This commit is contained in:
David Quigley
2016-07-22 11:52:49 -04:00
committed by Brian Behlendorf
parent 616fa7c02b
commit a6255b7fce
49 changed files with 2625 additions and 798 deletions
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module/zfs/zio_compress.c
+52 -30
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@@ -28,7 +28,7 @@
*/
/*
* Copyright (c) 2013 by Delphix. All rights reserved.
* Copyright (c) 2013, 2016 by Delphix. All rights reserved.
*/
#include <sys/zfs_context.h>
@@ -41,24 +41,23 @@
/*
* Compression vectors.
*/
zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS] = {
{NULL, NULL, 0, "inherit"},
{NULL, NULL, 0, "on"},
{NULL, NULL, 0, "uncompressed"},
{lzjb_compress, lzjb_decompress, 0, "lzjb"},
{NULL, NULL, 0, "empty"},
{gzip_compress, gzip_decompress, 1, "gzip-1"},
{gzip_compress, gzip_decompress, 2, "gzip-2"},
{gzip_compress, gzip_decompress, 3, "gzip-3"},
{gzip_compress, gzip_decompress, 4, "gzip-4"},
{gzip_compress, gzip_decompress, 5, "gzip-5"},
{gzip_compress, gzip_decompress, 6, "gzip-6"},
{gzip_compress, gzip_decompress, 7, "gzip-7"},
{gzip_compress, gzip_decompress, 8, "gzip-8"},
{gzip_compress, gzip_decompress, 9, "gzip-9"},
{zle_compress, zle_decompress, 64, "zle"},
{lz4_compress_zfs, lz4_decompress_zfs, 0, "lz4"},
{"inherit", 0, NULL, NULL},
{"on", 0, NULL, NULL},
{"uncompressed", 0, NULL, NULL},
{"lzjb", 0, lzjb_compress, lzjb_decompress},
{"empty", 0, NULL, NULL},
{"gzip-1", 1, gzip_compress, gzip_decompress},
{"gzip-2", 2, gzip_compress, gzip_decompress},
{"gzip-3", 3, gzip_compress, gzip_decompress},
{"gzip-4", 4, gzip_compress, gzip_decompress},
{"gzip-5", 5, gzip_compress, gzip_decompress},
{"gzip-6", 6, gzip_compress, gzip_decompress},
{"gzip-7", 7, gzip_compress, gzip_decompress},
{"gzip-8", 8, gzip_compress, gzip_decompress},
{"gzip-9", 9, gzip_compress, gzip_decompress},
{"zle", 64, zle_compress, zle_decompress},
{"lz4", 0, lz4_compress_zfs, lz4_decompress_zfs}
};
enum zio_compress
@@ -85,12 +84,26 @@ zio_compress_select(spa_t *spa, enum zio_compress child,
return (result);
}
size_t
zio_compress_data(enum zio_compress c, void *src, void *dst, size_t s_len)
/*ARGSUSED*/
static int
zio_compress_zeroed_cb(void *data, size_t len, void *private)
{
uint64_t *end = (uint64_t *)((char *)data + len);
uint64_t *word;
for (word = data; word < end; word++)
if (*word != 0)
return (1);
return (0);
}
size_t
zio_compress_data(enum zio_compress c, abd_t *src, void *dst, size_t s_len)
{
uint64_t *word, *word_end;
size_t c_len, d_len;
zio_compress_info_t *ci = &zio_compress_table[c];
void *tmp;
ASSERT((uint_t)c < ZIO_COMPRESS_FUNCTIONS);
ASSERT((uint_t)c == ZIO_COMPRESS_EMPTY || ci->ci_compress != NULL);
@@ -99,12 +112,7 @@ zio_compress_data(enum zio_compress c, void *src, void *dst, size_t s_len)
* If the data is all zeroes, we don't even need to allocate
* a block for it. We indicate this by returning zero size.
*/
word_end = (uint64_t *)((char *)src + s_len);
for (word = src; word < word_end; word++)
if (*word != 0)
break;
if (word == word_end)
if (abd_iterate_func(src, 0, s_len, zio_compress_zeroed_cb, NULL) == 0)
return (0);
if (c == ZIO_COMPRESS_EMPTY)
@@ -112,7 +120,11 @@ zio_compress_data(enum zio_compress c, void *src, void *dst, size_t s_len)
/* Compress at least 12.5% */
d_len = s_len - (s_len >> 3);
c_len = ci->ci_compress(src, dst, s_len, d_len, ci->ci_level);
/* No compression algorithms can read from ABDs directly */
tmp = abd_borrow_buf_copy(src, s_len);
c_len = ci->ci_compress(tmp, dst, s_len, d_len, ci->ci_level);
abd_return_buf(src, tmp, s_len);
if (c_len > d_len)
return (s_len);
@@ -122,13 +134,23 @@ zio_compress_data(enum zio_compress c, void *src, void *dst, size_t s_len)
}
int
zio_decompress_data(enum zio_compress c, void *src, void *dst,
zio_decompress_data_buf(enum zio_compress c, void *src, void *dst,
size_t s_len, size_t d_len)
{
zio_compress_info_t *ci = &zio_compress_table[c];
if ((uint_t)c >= ZIO_COMPRESS_FUNCTIONS || ci->ci_decompress == NULL)
return (SET_ERROR(EINVAL));
return (ci->ci_decompress(src, dst, s_len, d_len, ci->ci_level));
}
int
zio_decompress_data(enum zio_compress c, abd_t *src, void *dst,
size_t s_len, size_t d_len)
{
void *tmp = abd_borrow_buf_copy(src, s_len);
int ret = zio_decompress_data_buf(c, tmp, dst, s_len, d_len);
abd_return_buf(src, tmp, s_len);
return (ret);
}