tuto:linux:tunning_hdd
Différences
Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentesRévision précédente | Dernière révisionLes deux révisions suivantes | ||
tuto:linux:tunning_hdd [2013/06/25 21:10] – [tuning cfq] root | tuto:linux:tunning_hdd [2013/06/25 21:11] – [tuning deadline] root | ||
---|---|---|---|
Ligne 78: | Ligne 78: | ||
* **slice_sync** : This tunable dictates the time slice allotted to a process issuing synchronous (read or direct write) I/O. The default is 100 ms. | * **slice_sync** : This tunable dictates the time slice allotted to a process issuing synchronous (read or direct write) I/O. The default is 100 ms. | ||
===== tuning deadline ===== | ===== tuning deadline ===== | ||
+ | |||
+ | http:// | ||
* **fifo_batch** : This determines the number of reads or writes to issue in a single batch. The default is 16. Setting this to a higher value may result in better throughput, but will also increase latency. | * **fifo_batch** : This determines the number of reads or writes to issue in a single batch. The default is 16. Setting this to a higher value may result in better throughput, but will also increase latency. | ||
Ligne 84: | Ligne 86: | ||
* **write_expire** : This tunable allows you to set the number of milliseconds in which a write request should be serviced. By default, this is set to 5000 ms (five seconds). | * **write_expire** : This tunable allows you to set the number of milliseconds in which a write request should be serviced. By default, this is set to 5000 ms (five seconds). | ||
* **writes_starved** : This tunable controls how many read batches can be processed before processing a single write batch. The higher this is set, the more preference is given to reads. | * **writes_starved** : This tunable controls how many read batches can be processed before processing a single write batch. The higher this is set, the more preference is given to reads. | ||
- | |||
===== Script ===== | ===== Script ===== | ||
tuto/linux/tunning_hdd.txt · Dernière modification : 2016/10/27 21:15 de root