Problem FIXED after update Apple's EFI 1.7 for the new uMBP.
The freeze is gone and performance come back.
Speed boost 37% overall.
here is the xbench
Before:
Disk Test 199.74
Sequential 153.74
Uncached Write 188.38 115.66 MB/sec [4K blocks]
Uncached Write 168.17 95.15 MB/sec [256K blocks]
Uncached Read 93.58 27.39 MB/sec [4K blocks]
Uncached Read 245.21 123.24 MB/sec [256K blocks]
Random 285.03
Uncached Write 125.63 13.30 MB/sec [4K blocks]
Uncached Write 283.54 90.77 MB/sec [256K blocks]
Uncached Read 2265.96 16.06 MB/sec [4K blocks]
Uncached Read 474.91 88.12 MB/sec [256K blocks]
After the update:
Disk Test 273.45
Sequential 225.27
Uncached Write 287.31 176.41 MB/sec [4K blocks]
Uncached Write 314.59 178.00 MB/sec [256K blocks]
Uncached Read 114.86 33.61 MB/sec [4K blocks]
Uncached Read 418.23 210.20 MB/sec [256K blocks]
Random 347.86
Uncached Write 121.91 12.91 MB/sec [4K blocks]
Uncached Write 549.09 175.78 MB/sec [256K blocks]
Uncached Read 2548.45 18.06 MB/sec [4K blocks]
Uncached Read 924.04 171.46 MB/sec [256K blocks]
The freeze is gone and performance come back.
Speed boost 37% overall.
here is the xbench
Before:
Disk Test 199.74
Sequential 153.74
Uncached Write 188.38 115.66 MB/sec [4K blocks]
Uncached Write 168.17 95.15 MB/sec [256K blocks]
Uncached Read 93.58 27.39 MB/sec [4K blocks]
Uncached Read 245.21 123.24 MB/sec [256K blocks]
Random 285.03
Uncached Write 125.63 13.30 MB/sec [4K blocks]
Uncached Write 283.54 90.77 MB/sec [256K blocks]
Uncached Read 2265.96 16.06 MB/sec [4K blocks]
Uncached Read 474.91 88.12 MB/sec [256K blocks]
After the update:
Disk Test 273.45
Sequential 225.27
Uncached Write 287.31 176.41 MB/sec [4K blocks]
Uncached Write 314.59 178.00 MB/sec [256K blocks]
Uncached Read 114.86 33.61 MB/sec [4K blocks]
Uncached Read 418.23 210.20 MB/sec [256K blocks]
Random 347.86
Uncached Write 121.91 12.91 MB/sec [4K blocks]
Uncached Write 549.09 175.78 MB/sec [256K blocks]
Uncached Read 2548.45 18.06 MB/sec [4K blocks]
Uncached Read 924.04 171.46 MB/sec [256K blocks]
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