Messages in this thread | | | Date | Fri, 14 Mar 2008 11:03:42 -0700 (PDT) | From | david@lang ... | Subject | Re: [ANNOUNCE] Ramback: faster than a speeding bullet |
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On Fri, 14 Mar 2008, Theodore Tso wrote:
> It depends on the workload, obviously. I thought I remember someone > on this thread talking about benchmark where they went from ~2000 to > ~20 ops/sec once they added fsync(). I'm sure that was an extreme > benchmarking workload that isn't at all representative of real-life > usage, where you're usually do something else modifying the metadata > of many tiny files over and over again. :-)
I've seen this sort of thing with syslog, normal syslog at ~100 logs/sec, syslog without fsync >10,000 logs/sec.
if this is your situation then battery backed cache on your controller is the answer as it gives you almost full speed with the safety of fsync.
David Lang
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