[03:46] <cliffybx> heloo
[03:46] <cliffybx> anyone here
[03:53] <gko> yo
[07:11] <BlueT_> @@
[07:15] <HugoKuo_> @@
[07:15] <HugoKuo_> 前輩
[07:16] <acman> $$
[07:16] <HugoKuo_> 請教filesystem testing 的record rewrite 意義是什麼呢
[15:08] <BlueT_> hugokuo: 複寫已有 data 的磁區？ # 15:16 < HugoKuo_> 請教filesystem testing 的record rewrite 意義是什麼呢
[15:08] <BlueT_> hugokuo: 哪個 tool 或是哪裡看到的？ :3
[15:08] <hugokuo> iozone 
[15:08] <hugokuo> 頂等噢
[15:09] <hugokuo> Re-write-record
[15:09] <hugokuo> 好奇 為何這個項目出來的數據都很高
[15:19] <hugokuo> btw , does anyone know about how to disable filesystem read caching ……..   這影響我想做filesystem benchmark 的數據, 目前我只能把記憶體塞滿 應對 , if there's any suggestion ….'ll be appreciated :>
[17:49] <BlueT_> HugoKuo__: Re-Write
[17:49] <BlueT_> This test measures the performance of writing a file that already exists. When a file is written that already exists the work required is less as the metadata already exists. It is normal for the rewrite performance to be higher than the performance of writing a new file.
[17:49] <BlueT_> http://blogs.oracle.com/dom/entry/zfs_v_vxfs_iozone
[17:52] <BlueT_> HugoKuo__: http://www.linuxquestions.org/questions/linux-kernel-70/how-to-disable-filesystem-cache-627012/