[CentOS] write-back cache question
James Chase
james at wintercastle.netThu Feb 17 21:48:09 UTC 2011
- Previous message: [CentOS] write-back cache question
- Next message: [CentOS] write-back cache question
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
> You can verify your cache policy with MegaCLI tool. Check your output > from `MegaCli -CfgDsply -a0' command. > What a cool tool. It looks like it should be active according to MegaCli, though strange that Scott sees his drives in write-back mode via CentOS and I do not and I also have these horrific NFS speeds via VMWare that so many people have found to be caused by write-back not being active... I don't know what the answer is to this question. I went with iSCSI instead of NFS, the benefits being that it trounces my NFS setup performance wise, and seems stable despite warnings of high I/O causing VMWare to drop the LUN (I tested with bonnie++ as it seems this is an effective tool in getting the LUN to drop in VMWare). Product Name: PERC 5/i Integrated Memory: 256MB BBU: Present ... Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU Access Policy: Read/Write Disk Cache Policy: Disk's Default
- Previous message: [CentOS] write-back cache question
- Next message: [CentOS] write-back cache question
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
More information about the CentOS mailing list