05.05.2012 18:02, Alexander Yerenkow написал:
> тестил zfs с 4k-кратным оффсетом и без, вышло что нет особо разницы.
Это пул с ashift: 9
Разница не особо заметна
test-dd-write-8M.txt
1000+0 records in
1000+0 records out
8388608000 bytes transferred in 68.597201 secs (122287905 bytes/sec)
1m8.59s real 0.00s user 2.67s sys
test-dd-read-8M.txt
1000+0 records in
1000+0 records out
8388608000 bytes transferred in 1.184849 secs (7079896114 bytes/sec)
1.18s real 0.00s user 1.18s sys
test-dd-write-4K.txt
262144+0 records in
262144+0 records out
1073741824 bytes transferred in 6.289659 secs (170715427 bytes/sec)
7.02s real 0.03s user 2.51s sys
test-dd-read-4K.txt
262144+0 records in
262144+0 records out
1073741824 bytes transferred in 0.662700 secs (1620253395 bytes/sec)
0.66s real 0.00s user 0.66s sys
test-dd-write-64K.txt
16384+0 records in
16384+0 records out
1073741824 bytes transferred in 7.113678 secs (150940460 bytes/sec)
7.19s real 0.01s user 0.64s sys
test-dd-read-64K.txt
16384+0 records in
16384+0 records out
1073741824 bytes transferred in 0.157199 secs (6830466265 bytes/sec)
0.15s real 0.00s user 0.15s sys
test-dd-write-1M.txt
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 6.669148 secs (161001350 bytes/sec)
6.74s real 0.00s user 0.33s sys
test-dd-read-1M.txt
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 0.128198 secs (8375642321 bytes/sec)
0.12s real 0.00s user 0.12s sys
test-dd-write-100M.txt
10+0 records in
10+0 records out
1048576000 bytes transferred in 3.608680 secs (290570513 bytes/sec)
3.68s real 0.00s user 0.39s sys
test-dd-read-100M.txt
10+0 records in
10+0 records out
1048576000 bytes transferred in 0.184590 secs (5680571966 bytes/sec)
0.18s real 0.00s user 0.16s sys
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Vladislav V. Prodan
System & Network Administrator
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