| To: | Dave Chinner <david@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [PATCH 3/8] xfs: make the log ticket transaction id random |
| From: | Christoph Hellwig <hch@xxxxxxxxxxxxx> |
| Date: | Tue, 13 Apr 2010 14:12:25 -0400 |
| Cc: | Christoph Hellwig <hch@xxxxxxxxxxxxx>, xfs@xxxxxxxxxxx |
| In-reply-to: | <20100405233910.GA11036@dastard> |
| References: | <1270125691-29266-1-git-send-email-david@xxxxxxxxxxxxx> <1270125691-29266-4-git-send-email-david@xxxxxxxxxxxxx> <20100403093156.GD20166@xxxxxxxxxxxxx> <20100405233910.GA11036@dastard> |
| User-agent: | Mutt/1.5.19 (2009-01-05) |
On Tue, Apr 06, 2010 at 09:39:10AM +1000, Dave Chinner wrote: > Ideally, yes. However, I didn't want to introduce a global > monatomically increasing counter into the transaction code. I'm > seeing upwards of 50-60k transactions/s on my test box - that's > getting into the range where reliable global counters become > scalability limitations. I know this can be solved, but it is > somewhat complex and I'm not sure at this point that the complexity > is necessary. What do you think? I think making log revoery absolutely fail proof is nessecary, but for now your version defintively is an improvment over the current version, so ACK. |
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