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e2freefrag: Improve output to include be more like xfs_db's freesp -s 

Signed-off-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
bitmap-optimize
Andreas Dilger 2009-07-24 18:32:25 -04:00 committed by Theodore Ts'o
parent f668c2cfe8
commit ad751f11ec
4 changed files with 40 additions and 30 deletions
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2
misc/Makefile.in
View File

@ -289,7 +289,7 @@ logsave.profiled: profiled/logsave.o
$(Q) $(CC) $(ALL_LDFLAGS) -g -pg -o logsave.profiled profiled/logsave.o
e2freefrag: $(E2FREEFRAG_OBJS)
@echo "LD $@"
@echo " LD $@"
@$(CC) $(ALL_LDFLAGS) -o e2freefrag $(E2FREEFRAG_OBJS) $(LIBS)
filefrag: $(FILEFRAG_OBJS)

40
misc/e2freefrag.8.in
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@ -43,53 +43,53 @@ Device: /dev/vgroot/lvhome
.br
Blocksize: 4096 bytes
.br
Total blocks: 5120710
Total blocks: 1504085
.br
Free blocks: 831744 (16.2%)
Free blocks: 292995 (19.5%)
.br
Chunk size: 1048576 bytes (256 blocks)
.br
Total chunks: 20003
Total chunks: 5876
.br
Free chunks: 2174 (10.9%)
Free chunks: 463 (7.9%)
.br
Min free chunk: 4 KB
.br
Max free chunk: 24576 KB
Max free chunk: 24008 KB
.br
Avg. free chunk: 340 KB
Avg free chunk: 252 KB
.br
HISTOGRAM OF FREE CHUNK SIZES:
.br
Range Free chunks
Chunk Size Range : Free chunks Free Blocks Percent
.br
4K... 8K- : 2824
4K... 8K- : 704 704 0.2%
.br
8K... 16K- : 1760
8K... 16K- : 810 1979 0.7%
.br
16K... 32K- : 1857
16K... 32K- : 843 4467 1.5%
.br
32K... 64K- : 1003
32K... 64K- : 579 6263 2.1%
.br
64K... 128K- : 616
64K... 128K- : 493 11067 3.8%
.br
128K... 256K- : 479
128K... 256K- : 394 18097 6.2%
.br
256K... 512K- : 302
256K... 512K- : 281 25477 8.7%
.br
512K... 1024K- : 238
512K... 1024K- : 253 44914 15.3%
.br
1M... 2M- : 213
1M... 2M- : 143 51897 17.7%
.br
2M... 4M- : 173
2M... 4M- : 73 50683 17.3%
.br
4M... 8M- : 287
4M... 8M- : 37 52417 17.9%
.br
8M... 16M- : 4
8M... 16M- : 7 19028 6.5%
.br
16M... 32M- : 1
16M... 32M- : 1 6002 2.0%
.SH AUTHOR
This version of e2freefrag was written by Rupesh Thakare, and modified by
Andreas Dilger <adilger@sun.com>, and Kalpak Shah.

25
misc/e2freefrag.c
View File

@ -60,8 +60,10 @@ void init_chunk_info(ext2_filsys fs, struct chunk_info *info)
info->max = info->avg = 0;
info->real_free_chunks = 0;
for (i = 0; i < MAX_HIST; i++)
info->histogram.fc_buckets[i] = 0;
for (i = 0; i < MAX_HIST; i++) {
info->histogram.fc_chunks[i] = 0;
info->histogram.fc_blocks[i] = 0;
}
}
void scan_block_bitmap(ext2_filsys fs, struct chunk_info *info)
@ -101,7 +103,9 @@ void scan_block_bitmap(ext2_filsys fs, struct chunk_info *info)
unsigned long index;
index = ul_log2(last_chunk_size) + 1;
info->histogram.fc_buckets[index]++;
info->histogram.fc_chunks[index]++;
info->histogram.fc_blocks[index] +=
last_chunk_size;
if (last_chunk_size > info->max)
info->max = last_chunk_size;
@ -137,7 +141,7 @@ errcode_t get_chunk_info(ext2_filsys fs, struct chunk_info *info)
printf("\nChunksize: %lu bytes (%u blocks)\n",
info->chunkbytes, info->blks_in_chunk);
total_chunks = (fs->super->s_blocks_count + info->blks_in_chunk) >>
(info->chunkbits - info->blocksize_bits);
(info->chunkbits - info->blocksize_bits);
printf("Total chunks: %lu\nFree chunks: %lu (%0.1f%%)\n",
total_chunks, info->free_chunks,
(double)info->free_chunks * 100 / total_chunks);
@ -156,12 +160,17 @@ errcode_t get_chunk_info(ext2_filsys fs, struct chunk_info *info)
"Avg free chunk: %lu KB\n", info->min, info->max, info->avg);
printf("\nHISTOGRAM OF FREE CHUNK SIZES:\n");
printf("%s\t%10s\n", "Chunk Size Range :", "Free chunks");
printf("%s : %12s %12s %7s\n", "Chunk Size Range", "Free chunks",
"Free Blocks", "Percent");
for (i = 0; i < MAX_HIST; i++) {
end = 1 << (i + info->blocksize_bits - units);
if (info->histogram.fc_buckets[i] != 0)
printf("%5lu%c...%5lu%c- : %10lu\n", start, *unitp,
end, *unitp, info->histogram.fc_buckets[i]);
if (info->histogram.fc_chunks[i] != 0)
printf("%5lu%c...%5lu%c- : %12lu %12lu %6.2f%%\n",
start, *unitp, end, *unitp,
info->histogram.fc_chunks[i],
info->histogram.fc_blocks[i],
(double)info->histogram.fc_blocks[i] * 100 /
fs->super->s_free_blocks_count);
start = end;
if (start == 1<<10) {
start = 1;

3
misc/e2freefrag.h
View File

@ -4,7 +4,8 @@
#define MAX_HIST 32
struct free_chunk_histogram {
unsigned long fc_buckets[MAX_HIST];
unsigned long fc_chunks[MAX_HIST];
unsigned long fc_blocks[MAX_HIST];
};
struct chunk_info {