Re: [blk-lib] 6a0608544e5: fileio -77.4% max latency, -5.7% throughput

2014-03-04 Thread Fengguang Wu
On Wed, Mar 05, 2014 at 12:23:53PM +1100, Dave Chinner wrote: > On Wed, Mar 05, 2014 at 09:16:45AM +0800, Fengguang Wu wrote: > > On Tue, Mar 04, 2014 at 01:52:25PM -0800, Kent Overstreet wrote: > > > On Tue, Mar 04, 2014 at 09:21:30PM +0800, Fengguang Wu wrote: > > > > Hi Kent, > > > > > > > >

Re: [blk-lib] 6a0608544e5: fileio -77.4% max latency, -5.7% throughput

2014-03-04 Thread Dave Chinner
On Wed, Mar 05, 2014 at 09:16:45AM +0800, Fengguang Wu wrote: > On Tue, Mar 04, 2014 at 01:52:25PM -0800, Kent Overstreet wrote: > > On Tue, Mar 04, 2014 at 09:21:30PM +0800, Fengguang Wu wrote: > > > Hi Kent, > > > > > > FYI, we noticed the below changes on > > > > > >

Re: [blk-lib] 6a0608544e5: fileio -77.4% max latency, -5.7% throughput

2014-03-04 Thread Fengguang Wu
On Tue, Mar 04, 2014 at 01:52:25PM -0800, Kent Overstreet wrote: > On Tue, Mar 04, 2014 at 09:21:30PM +0800, Fengguang Wu wrote: > > Hi Kent, > > > > FYI, we noticed the below changes on > > > > git://evilpiepirate.org/~kent/linux-bcache.git for-jens > > commit

Re: [blk-lib] 6a0608544e5: fileio -77.4% max latency, -5.7% throughput

2014-03-04 Thread Kent Overstreet
On Tue, Mar 04, 2014 at 09:21:30PM +0800, Fengguang Wu wrote: > Hi Kent, > > FYI, we noticed the below changes on > > git://evilpiepirate.org/~kent/linux-bcache.git for-jens > commit 6a0608544e5672bd9a044c285119547eae41abe5 ("blk-lib.c: > generic_make_request() handles large bios now") > >

[blk-lib] 6a0608544e5: fileio -77.4% max latency, -5.7% throughput

2014-03-04 Thread Fengguang Wu
Hi Kent, FYI, we noticed the below changes on git://evilpiepirate.org/~kent/linux-bcache.git for-jens commit 6a0608544e5672bd9a044c285119547eae41abe5 ("blk-lib.c: generic_make_request() handles large bios now") test case: snb-drag/sysbench/fileio/600s-100%-1HDD-ext4-64G-1024-seqrewr-sync

[blk-lib] 6a0608544e5: fileio -77.4% max latency, -5.7% throughput

2014-03-04 Thread Fengguang Wu
Hi Kent, FYI, we noticed the below changes on git://evilpiepirate.org/~kent/linux-bcache.git for-jens commit 6a0608544e5672bd9a044c285119547eae41abe5 (blk-lib.c: generic_make_request() handles large bios now) test case: snb-drag/sysbench/fileio/600s-100%-1HDD-ext4-64G-1024-seqrewr-sync

Re: [blk-lib] 6a0608544e5: fileio -77.4% max latency, -5.7% throughput

2014-03-04 Thread Kent Overstreet
On Tue, Mar 04, 2014 at 09:21:30PM +0800, Fengguang Wu wrote: Hi Kent, FYI, we noticed the below changes on git://evilpiepirate.org/~kent/linux-bcache.git for-jens commit 6a0608544e5672bd9a044c285119547eae41abe5 (blk-lib.c: generic_make_request() handles large bios now) test case:

Re: [blk-lib] 6a0608544e5: fileio -77.4% max latency, -5.7% throughput

2014-03-04 Thread Fengguang Wu
On Tue, Mar 04, 2014 at 01:52:25PM -0800, Kent Overstreet wrote: On Tue, Mar 04, 2014 at 09:21:30PM +0800, Fengguang Wu wrote: Hi Kent, FYI, we noticed the below changes on git://evilpiepirate.org/~kent/linux-bcache.git for-jens commit 6a0608544e5672bd9a044c285119547eae41abe5

Re: [blk-lib] 6a0608544e5: fileio -77.4% max latency, -5.7% throughput

2014-03-04 Thread Dave Chinner
On Wed, Mar 05, 2014 at 09:16:45AM +0800, Fengguang Wu wrote: On Tue, Mar 04, 2014 at 01:52:25PM -0800, Kent Overstreet wrote: On Tue, Mar 04, 2014 at 09:21:30PM +0800, Fengguang Wu wrote: Hi Kent, FYI, we noticed the below changes on

Re: [blk-lib] 6a0608544e5: fileio -77.4% max latency, -5.7% throughput

2014-03-04 Thread Fengguang Wu
On Wed, Mar 05, 2014 at 12:23:53PM +1100, Dave Chinner wrote: On Wed, Mar 05, 2014 at 09:16:45AM +0800, Fengguang Wu wrote: On Tue, Mar 04, 2014 at 01:52:25PM -0800, Kent Overstreet wrote: On Tue, Mar 04, 2014 at 09:21:30PM +0800, Fengguang Wu wrote: Hi Kent, FYI, we noticed the