Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Thu, 19 Jun 2008, Lars Marowsky-Bree wrote: > On 2008-06-17T12:37:06, Tom Brown <wc-linbit.com at vmail.baremetal.com> wrote: > >> 8.0.12 (api:86/proto:86) >> -------- >> [...] >> * Two new config options no-disk-flushes and no-md-flushes to disable >> the use of io subsystem flushes and barrier BIOs. >> [...] > > The better and safer option towards higher performance is putting the > metadata on a different spindle, or possibly even on an SSD drive. OK. since this is being suggested on a storage related list, I'm going to ask... As far as I know, SSD's _suck_ for write access... unless the system doing the writing is aware of and optimized for the underlying storage... e.g. a log structured storage system. I looked into these for mail-queue storage, and even bought one (32 gig, SATA, 2.5") ... it's sitting here on my desk unused. Please tell me I am wrong (and provide some details :). e.g. a reasonable dram based solution? -Tom > Having the metadata and data on the same spindle is going to cause a > significant performance hit due to the AL.