Re: [PATCH] tmpfs: avoid a little creat and stat slowdown

On Fri, 13 Nov 2015, Huang, Ying wrote: > > c435a390574d is the direct parent of afa2db2fb6f1 in its original git. > 43819159da2b is your patch applied on top of v4.3-rc7. The comparison > of 43819159da2b with v4.3-rc7 is as follow: ... > So you patch improved 11.9% from its base v4.3-rc7. I

Re: [PATCH] tmpfs: avoid a little creat and stat slowdown

Hugh Dickins writes: > On Wed, 4 Nov 2015, Huang, Ying wrote: >> Hugh Dickins writes: >> >> > LKP reports that v4.2 commit afa2db2fb6f1 ("tmpfs: truncate prealloc >> > blocks past i_size") causes a 14.5% slowdown in the AIM9 creat-clo >> > benchmark. >> > >> > creat-clo does just what you'd

Re: [PATCH] tmpfs: avoid a little creat and stat slowdown

Hugh Dickins writes: > On Wed, 4 Nov 2015, Huang, Ying wrote: >> Hugh Dickins writes: >> >> > LKP reports that v4.2 commit afa2db2fb6f1 ("tmpfs: truncate prealloc >> > blocks past i_size") causes a 14.5% slowdown in the AIM9 creat-clo >> > benchmark. >> > >>

Re: [PATCH] tmpfs: avoid a little creat and stat slowdown

On Fri, 13 Nov 2015, Huang, Ying wrote: > > c435a390574d is the direct parent of afa2db2fb6f1 in its original git. > 43819159da2b is your patch applied on top of v4.3-rc7. The comparison > of 43819159da2b with v4.3-rc7 is as follow: ... > So you patch improved 11.9% from its base v4.3-rc7. I

Re: [PATCH] tmpfs: avoid a little creat and stat slowdown

On Wed, 4 Nov 2015, Huang, Ying wrote: > Hugh Dickins writes: > > > LKP reports that v4.2 commit afa2db2fb6f1 ("tmpfs: truncate prealloc > > blocks past i_size") causes a 14.5% slowdown in the AIM9 creat-clo > > benchmark. > > > > creat-clo does just what you'd expect from the name, and creat's

Re: [PATCH] tmpfs: avoid a little creat and stat slowdown

On Wed, 4 Nov 2015, Huang, Ying wrote: > Hugh Dickins writes: > > > LKP reports that v4.2 commit afa2db2fb6f1 ("tmpfs: truncate prealloc > > blocks past i_size") causes a 14.5% slowdown in the AIM9 creat-clo > > benchmark. > > > > creat-clo does just what you'd expect from the

Re: [PATCH] tmpfs: avoid a little creat and stat slowdown

Hugh Dickins writes: > LKP reports that v4.2 commit afa2db2fb6f1 ("tmpfs: truncate prealloc > blocks past i_size") causes a 14.5% slowdown in the AIM9 creat-clo > benchmark. > > creat-clo does just what you'd expect from the name, and creat's O_TRUNC > on 0-length file does indeed get into more

Re: [PATCH] tmpfs: avoid a little creat and stat slowdown

Hugh Dickins writes: > LKP reports that v4.2 commit afa2db2fb6f1 ("tmpfs: truncate prealloc > blocks past i_size") causes a 14.5% slowdown in the AIM9 creat-clo > benchmark. > > creat-clo does just what you'd expect from the name, and creat's O_TRUNC > on 0-length file does

[PATCH] tmpfs: avoid a little creat and stat slowdown

LKP reports that v4.2 commit afa2db2fb6f1 ("tmpfs: truncate prealloc blocks past i_size") causes a 14.5% slowdown in the AIM9 creat-clo benchmark. creat-clo does just what you'd expect from the name, and creat's O_TRUNC on 0-length file does indeed get into more overhead now shmem_setattr() tests

[PATCH] tmpfs: avoid a little creat and stat slowdown

LKP reports that v4.2 commit afa2db2fb6f1 ("tmpfs: truncate prealloc blocks past i_size") causes a 14.5% slowdown in the AIM9 creat-clo benchmark. creat-clo does just what you'd expect from the name, and creat's O_TRUNC on 0-length file does indeed get into more overhead now shmem_setattr() tests