With PUBG, loading it for the first time takes longer with both the HDD and the SSD cache. However, during subsequent runs, loading times are decreased with SSD caching while the HDD takes a hit. And we see improved performance when loading the game after restarting the computer. The last ...
root@xxxx:~$ sudo dmsetup reload hdd-origin--table'0 467664896 cache 252:0 252:1 8:2 512 0 cleaner 0'root@xxxx:~$ sudo dmsetup resume hdd-origin root@xxxx:~$ sudo dmsetup wait hdd-origin<waitfordirty data blocks to be written out>root@xxxx:~$ dmsetup remove hdd-origin root@xxxx:~...
SSD盘作为cache来增加读写速度，要使用dm-cache，将SSD用作HDD盘的Cache，也可以理解为内存。本文使用256KB（262144B）作为cache block的大小 首先查看可用于cache的实际大小： 1.metadata的大小为 4MB+(16B * nr_blocks) 计算方法 nr_blocks是cache设备的block的数量。2.计算metadata占...
经过实践,DSM 6.1系统的SSD Cache使用1块SSD的时候只支持Read Cache读缓存,使用2块SSD的时候可以支持Read/Write读写缓存,这个是SSD Cache缓存架构决定的。这时候我这样的DS1517+面临一个两难的选择——第一个方案:牺牲2个磁盘位作为SSD Cache,等于5盘群晖变成3盘群晖,等于DS1517+降级成3盘位可用,这样的结果我想...
BCW: Buffer-Controlled Writes to HDDs for SSD-HDD Hybrid Storage Server 原文地址 为了兼顾访问性能和硬件成本,目前有不少的存储系统都采用了混合存储(Hybrid Storage),使用 SSD 来提供微秒级访问,配合 HDD 来降低存储成本。在实现细节上,一般会使用 SSD 来服务用户的写操作(cache),然后通过后台操作批量将 SSD...
pool 'cache' is now (or already was) a tierof 'storage' 4)将客户端流量指向到缓存存储池 # ceph osd tier set-overlay storage cache overlay for 'storage' is now (or alreadywas) 'cache' 2、调整Cache tier配置 1)设置缓存层hit_set_type使用bloom过滤器 ...
4.建立ssd-cache: root@xxxx:~$ dmsetup create ssd-cache --table'0 467628160 linear /dev/sdb 36736' 5.获得origin设备的扇区数: root@xxxx:~$ blockdev --getsz /dev/sdb467664896 6.建立origin设备(256kB): root@xxxx:~$ dmsetup create hdd-origin --table'0 467664896 cache /dev/mapper/ssd-...
in the cache it first disables writeback caching and waits for all dirty data to be flushed. Getting started: You’ll need make-bcache from the bcache-tools repository. Both the cache device and backing device must be formatted before use. ...
不是的，是纯SSD
everything I did with Storage Spaces, including the scenario to exchange 4 smaller HDD one by one with bigger HDDs, and then expand the virtual disk - with encryption and deuplication active, without losing data. Or the scenario to create a Raid5-like setup which uses a raid1-ssd cache....