* Re: Filesystem benchmarks on reasonably fast hardware [not found] ` <20110718120751.GH14869@thunk.org> @ 2011-07-18 12:42 ` Jörn Engel 2011-07-25 15:18 ` Ted Ts'o 0 siblings, 1 reply; 6+ messages in thread From: Jörn Engel @ 2011-07-18 12:42 UTC (permalink / raw) To: Ted Ts'o; +Cc: linux-fsdevel, linux-ext4 [-- Attachment #1: Type: text/plain, Size: 666 bytes --] On Mon, 18 July 2011 08:07:51 -0400, Ted Ts'o wrote: > > Can you send me your script and the lockstat for ext4? Attached. The first script generates a bunch of files, the second condenses them into the tabular form. Will need some massaging to work on anything other than my particular setup, sorry. > (Please cc the linux-ext4@vger.kernel.org list if you don't mind. > Thanks!!) Sure. Lockstat will come later today. The machine is currently busy regenerating xfs seqrd numbers. Jörn -- I've never met a human being who would want to read 17,000 pages of documentation, and if there was, I'd kill him to get him out of the gene pool. -- Joseph Costello [-- Attachment #2: sysbench.sh --] [-- Type: application/x-sh, Size: 1612 bytes --] [-- Attachment #3: sysbench_result.sh --] [-- Type: application/x-sh, Size: 819 bytes --] ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Filesystem benchmarks on reasonably fast hardware 2011-07-18 12:42 ` Filesystem benchmarks on reasonably fast hardware Jörn Engel @ 2011-07-25 15:18 ` Ted Ts'o 2011-07-25 18:20 ` Jörn Engel 0 siblings, 1 reply; 6+ messages in thread From: Ted Ts'o @ 2011-07-25 15:18 UTC (permalink / raw) To: Jörn Engel; +Cc: linux-fsdevel, linux-ext4 On Mon, Jul 18, 2011 at 02:42:29PM +0200, Jörn Engel wrote: > On Mon, 18 July 2011 08:07:51 -0400, Ted Ts'o wrote: > > > > Can you send me your script and the lockstat for ext4? > > Attached. The first script generates a bunch of files, the second > condenses them into the tabular form. Will need some massaging to > work on anything other than my particular setup, sorry. > > > (Please cc the linux-ext4@vger.kernel.org list if you don't mind. > > Thanks!!) > > Sure. Lockstat will come later today. The machine is currently busy > regenerating xfs seqrd numbers. Hi Jörn, Did you have a chance to do an ext4 lockstat run? Many thanks!! - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Filesystem benchmarks on reasonably fast hardware 2011-07-25 15:18 ` Ted Ts'o @ 2011-07-25 18:20 ` Jörn Engel 2011-07-25 21:18 ` Ted Ts'o 2011-07-26 14:57 ` Ted Ts'o 0 siblings, 2 replies; 6+ messages in thread From: Jörn Engel @ 2011-07-25 18:20 UTC (permalink / raw) To: Ted Ts'o; +Cc: linux-fsdevel, linux-ext4 On Mon, 25 July 2011 11:18:25 -0400, Ted Ts'o wrote: > > Did you have a chance to do an ext4 lockstat run? Yes, I did. But your mails keep bouncing, so you have to look at the list to see it (or this mail). Yes, I lack a proper reverse DNS record, as the IP belongs to my provider, not me. Most people don't care, some bounce, some silently ignore my mail. The joys of spam filtering. Jörn -- The rabbit runs faster than the fox, because the rabbit is rinning for his life while the fox is only running for his dinner. -- Aesop -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Filesystem benchmarks on reasonably fast hardware 2011-07-25 18:20 ` Jörn Engel @ 2011-07-25 21:18 ` Ted Ts'o 2011-07-26 14:57 ` Ted Ts'o 1 sibling, 0 replies; 6+ messages in thread From: Ted Ts'o @ 2011-07-25 21:18 UTC (permalink / raw) To: Jörn Engel; +Cc: linux-fsdevel, linux-ext4 On Mon, Jul 25, 2011 at 08:20:37PM +0200, Jörn Engel wrote: > On Mon, 25 July 2011 11:18:25 -0400, Ted Ts'o wrote: > > > > Did you have a chance to do an ext4 lockstat run? > > Yes, I did. But your mails keep bouncing, so you have to look at the > list to see it (or this mail). Yes, I lack a proper reverse DNS > record, as the IP belongs to my provider, not me. Most people don't > care, some bounce, some silently ignore my mail. The joys of spam > filtering. I didn't see the ext4 lockstat on the list. Can you resend it to tytso@google.com or theodore.tso@gmail.com? MIT is using an outsourced SPAM provider (Brightmail anti-spam), and I can't do anything about that, unfortunately. From what I can tell the Brightmail doesn't drop all e-mails from non-resolving IP's, but if it's in a "bad neighborhood" (i.e., your neighbors are all spammers, or belong to Windows users where 80% of the machines are spambots), Brightmail is probably going to flag your mail as spam. :-( Thanks! - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Filesystem benchmarks on reasonably fast hardware 2011-07-25 18:20 ` Jörn Engel 2011-07-25 21:18 ` Ted Ts'o @ 2011-07-26 14:57 ` Ted Ts'o 2011-07-27 3:39 ` Yongqiang Yang 1 sibling, 1 reply; 6+ messages in thread From: Ted Ts'o @ 2011-07-26 14:57 UTC (permalink / raw) To: Jörn Engel; +Cc: linux-fsdevel, linux-ext4 On Mon, Jul 25, 2011 at 08:20:37PM +0200, Jörn Engel wrote: > On Mon, 25 July 2011 11:18:25 -0400, Ted Ts'o wrote: > > > > Did you have a chance to do an ext4 lockstat run? Hi Jörn, Thanks for forwarding it to me. It's the same problem as in XFS, the excessive coverage of the i_mutex lock. In ext4's case, it's in the generic generic_file_aio_write() machinery where we need to do the lock busting. (XFS apparently doesn't use the generic routines, so the fix that Dave did won't help ext3 and ext4.) I don't have the time to look at it now, but I'll put it on my todo list; or maybe someone with a bit more time can look into how we might be able to use a similar approach in the generic file system code. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Filesystem benchmarks on reasonably fast hardware 2011-07-26 14:57 ` Ted Ts'o @ 2011-07-27 3:39 ` Yongqiang Yang 0 siblings, 0 replies; 6+ messages in thread From: Yongqiang Yang @ 2011-07-27 3:39 UTC (permalink / raw) To: Jörn Engel, Ted Ts'o; +Cc: linux-fsdevel, linux-ext4 Hi Jörn and Ted, Could you anyone send out the ext4 lock stat on the list? Thank you, Yongqiang. On Tue, Jul 26, 2011 at 10:57 PM, Ted Ts'o <tytso@mit.edu> wrote: > On Mon, Jul 25, 2011 at 08:20:37PM +0200, Jörn Engel wrote: >> On Mon, 25 July 2011 11:18:25 -0400, Ted Ts'o wrote: >> > >> > Did you have a chance to do an ext4 lockstat run? > > Hi Jörn, > > Thanks for forwarding it to me. It's the same problem as in XFS, the > excessive coverage of the i_mutex lock. In ext4's case, it's in the > generic generic_file_aio_write() machinery where we need to do the > lock busting. (XFS apparently doesn't use the generic routines, so > the fix that Dave did won't help ext3 and ext4.) > > I don't have the time to look at it now, but I'll put it on my todo > list; or maybe someone with a bit more time can look into how we might > be able to use a similar approach in the generic file system code. > > - Ted > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Best Wishes Yongqiang Yang -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-07-27 3:39 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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[not found] ` <20110718120751.GH14869@thunk.org>
2011-07-18 12:42 ` Filesystem benchmarks on reasonably fast hardware Jörn Engel
2011-07-25 15:18 ` Ted Ts'o
2011-07-25 18:20 ` Jörn Engel
2011-07-25 21:18 ` Ted Ts'o
2011-07-26 14:57 ` Ted Ts'o
2011-07-27 3:39 ` Yongqiang Yang
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