ユーザ用ツール

サイト用ツール


サイドバー



最近の更新



Tag Cloud

タグ#
6
10
1
3
1
2
17
7
1
1
6
12
4
1
2
205
1
6
2
7
14
5
1
27
3
3
1
6
1
1
42
1
3
3
1
1
1
1
1
1
24
46
7
9
10
5
10
3
3
2
8
2
2
6
5
1
1
4
9
4
3
3
2
1
8
2
4
1
5
27
2
12
2
3
1
1
2
2
1
1
1
4
3
2
4
2
2
1
1
2
1
2
1
2
1
27
2
1
2
2
2
1
1
2
3
14
5
8
1
1
2
12
1
5
1
2
7
1
1
1
1
1
8
1
5
2
1
1
1
3
3
10
1
2
1
1
7
3
1
10
1
1
4
1
2
1
2
7
2
2
3
1
1
3
1
2
1
2
2
2
1
2
3
1
2
3
4
1
3
1
3
3
2
1
1
7
1
3
3
1
1
1
1
5
1
33
2
1
2
1
2
2
3
1
1
1
3
1
2
1
1
1
3
1
1
1
2
4
2
1
1
1
3
1
2
4
2
1
2
1
2
1
1
2
1
1
1
2
1
1
2
01_linux:99_その他:64_adaptech_writeback

64 Adaptech WriteBack設定

arcconfig

# /usr/StorMan/arcconf SETCACHE

 Usage: SETCACHE <Controller#> LOGICALDRIVE <LogicalDrive#> <logical mode> [noprompt] [nologs]
 Usage: SETCACHE <Controller#> DEVICE <Channel# ID#> <physical mode> [nologs]

設定例

LOGICALDRIVE に対して、WriteBack Enableにする。

設定前

Logical device number 1
   Logical device name                      : ARRAY2
   RAID level                               : 10
   Status of logical device                 : Optimal
   Size                                     : 6673398 MB
   Stripe-unit size                         : 256 KB
   Read-cache mode                          : Enabled
   MaxCache preferred read cache setting    : Enabled
   MaxCache read cache setting              : Enabled
   Write-cache mode                         : Disabled (write-through)
   Write-cache setting                      : Disabled (write-through)   

設定コマンド実行

※キャッシュバッテリが搭載されてないものだと、WARNINGが出る。

# /usr/StorMan/arcconf SETCACHE 1 LOGICALDRIVE 1 wb
Controllers found: 1
WARNING: Power failure without battery/ZMM support will lead to data loss.
Do you wish to continue?
Press y, then ENTER to continue or press ENTER to abort:

設定後

Logical device number 1
   Logical device name                      : ARRAY2
   RAID level                               : 10
   Status of logical device                 : Optimal
   Size                                     : 6673398 MB
   Stripe-unit size                         : 256 KB
   Read-cache mode                          : Enabled
   MaxCache preferred read cache setting    : Enabled
   MaxCache read cache setting              : Enabled
   Write-cache mode                         : Enabled (write-back)
   Write-cache setting                      : Enabled (write-back)

性能

WriteBack Disabled

# dbench -t 10 4
Throughput 154.849 MB/sec  4 clients  4 procs  max_latency=119.115 ms

WriteBack Enabled

# dbench -t 10 4
Throughput 1432.61 MB/sec  4 clients  4 procs  max_latency=15.367 ms
01_linux/99_その他/64_adaptech_writeback.txt · 最終更新: 2020/10/03 07:12 by matsui

Yesterday:1433 Today:042 Total:84772