On Thu, Sep 24, 2009 at 08:43:22AM -0400, Chris Mason wrote: > On Thu, Sep 24, 2009 at 04:27:57PM +0800, john wrote: > > After a git bisect, I think this patch may introduce a performance > > regression(about 15% slower) in postmark benchmark. Sometimes(last a few > > seconds) in the test, CPU usage is 100% wait but NO IO is performing, it's > > not IO-wait. This didn't happen for earlier versions. > > test*environment: > > hard disk: INTEL X25-E SSD 64G > > mkfs options: mkfs.btrfs -m single /dev/xxx > > mount options: -o ssd,nodatasum,nodatacow > > Thanks, I'll give this a shot here. Looks like Yan Zheng already tracked it down. I've pushed his fix out to the master branch. Thanks, Chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
