----- Original Message -----
> From: "Srikanth Mampilakal" <shrikanth1...@gmail.com>
> To: "Anuradha Talur" <ata...@redhat.com>
> Cc: "gluster-users" <gluster-users@gluster.org>
> Sent: Thursday, December 31, 2015 1:43:11 AM
> Subject: Re: [Gluster-users] Gluster - Performance issue while copying bulk
> files/folders
>
> Hi All,
>
> I have shared the Gluster Volume Profile for your reference. I am facing
> performance issue with my Gluster setup while copying multiples
> files/folders from client to the mounted gluster volume.
>
> Any suggestion to improve the copy speed to the Gluster volume is much
> appreciated.
Hi Srikanth,
Thanks for providing the profile info.
Currently in a replicate volume, you will find performance issue while
copying small files. This is because a create operation takes 2 network calls
and write
takes 3; this is done to acquire locks and store some glusterfs metadata
so that data consistency is ensured.
There is work being done to improve this performance.
1) Compound fops - This translator will reduce the network overhead hence
reducing
the time taken.
2) Eager locking - This translator will anticipate the locks required,
and will be helpful in the bulk copy/write cases.
Both of these are improvements are targeted for gluster 3.8.
I hope this info helps.
>
> Thanks
> Srikanth
>
> On Tue, Dec 15, 2015 at 10:47 PM, Srikanth Mampilakal <
> shrikanth1...@gmail.com> wrote:
>
> > Hi Anuradha,
> >
> > Please find the Gluster Volume Profile details
> >
> > time cp -RPp drupal\ code/ /mnt/testmount/copytogluster
> >
> >
> >
> >
> > *Profile info of the volume when you copy dirs/files into glusterfs.*
> >
> >
> > *Time taken to copy (70 MB files/Folder)*
> >
> > [root@GFSCLIENT01 temp]# time cp -RPp /mnt/testmount/
> > /mnt/testmount/copytogluster
> >
> > real 29m40.985s
> > user 0m0.172s
> > sys 0m1.688s
> >
> >
> >
> > [root@GFSNODE01 ~]# gluster volume profile gv1 info
> > Brick: GFSNODE01:/mnt/perfDisk/gv1
> >
> > --------------------------------------
> > Cumulative Stats:
> > Block Size: 16b+ 32b+
> > 64b+
> > No. of Reads: 0 0
> > 0
> > No. of Writes: 19 11
> > 75
> >
> > Block Size: 128b+ 256b+
> > 512b+
> > No. of Reads: 0 0
> > 0
> > No. of Writes: 77 221
> > 297
> >
> > Block Size: 1024b+ 2048b+
> > 4096b+
> > No. of Reads: 0 0
> > 0
> > No. of Writes: 344 305
> > 336
> >
> > Block Size: 8192b+ 16384b+
> > 32768b+
> > No. of Reads: 0 0
> > 0
> > No. of Writes: 160 200
> > 87
> >
> > Block Size: 65536b+ 131072b+
> > No. of Reads: 0 0
> > No. of Writes: 59 38
> > %-latency Avg-latency Min-Latency Max-Latency No. of calls
> > Fop
> > --------- ----------- ----------- ----------- ------------
> > ----
> > 0.00 0.00 us 0.00 us 0.00 us 2198
> > RELEASE
> > 0.00 0.00 us 0.00 us 0.00 us 18
> > RELEASEDIR
> > 0.00 39.75 us 22.00 us 59.00 us 4
> > READDIR
> > 0.01 63.12 us 3.00 us 143.00 us 8
> > OPENDIR
> > 0.01 108.83 us 27.00 us 194.00 us 6
> > GETXATTR
> > 0.11 58.07 us 28.00 us 124.00 us 170
> > STAT
> > 0.54 113.57 us 46.00 us 258.00 us 440
> > SETXATTR
> > 0.79 97.28 us 23.00 us 224.00 us 745
> > STATFS
> > 1.37 57.40 us 12.00 us 428.00 us 2198
> > FLUSH
> > 3.70 77.12 us 15.00 us 322.00 us 4420
> > FINODELK
> > 3.94 68.70 us 14.00 us 259.00 us 5278
> > ENTRYLK
> > 4.98 205.68 us 70.00 us 2874.00 us 2229
> > WRITE
> > 5.15 1077.38 us 202.00 us 112584.00 us 440
> > MKDIR
> > 5.27 110.26 us 33.00 us 5589.00 us 4397
> > REMOVEXATTR
> > 7.88 118.30 us 28.00 us 11471.00 us 6130
> > SETATTR
> > 9.23 190.97 us 33.00 us 107884.00 us 4450
> > FXATTROP
> > 16.06 672.52 us 112.00 us 177035.00 us 2199
> > CREATE
> > 20.24 80.67 us 11.00 us 454.00 us 23102
> > INODELK
> > 20.74 160.46 us 24.00 us 33476.00 us 11901
> > LOOKUP
> >
> > Duration: 3007 seconds
> > Data Read: 0 bytes
> > Data Written: 24173066 bytes
> >
> >
> > -----------------------------------------------------------------------------------------------
> >
> > *Profile info of the volume when you copy dirs/files within glusterfs.*
> >
> > Time taken to copy (70 MB files/folders)
> >
> > [root@GFSCLIENT01 testmount]# time cp -RPp copytogluster/data/
> > /mnt/testmount/copywithinglustervol/
> >
> > real 37m50.407s
> > user 0m0.248s
> > sys 0m1.979s
> >
> > [root@GFSNODE01 ~]# gluster volume profile gv1 info
> > Brick: GFSNODE01:/mnt/perfDisk/gv1
> >
> >
> > Interval 8 Stats:
> > Block Size: 64b+ 128b+
> > 256b+
> > No. of Reads: 0 0
> > 0
> > No. of Writes: 11 5
> > 11
> >
> > Block Size: 512b+ 1024b+
> > 2048b+
> > No. of Reads: 0 0
> > 0
> > No. of Writes: 14 18
> > 13
> >
> > Block Size: 4096b+ 8192b+
> > 16384b+
> > No. of Reads: 0 0
> > 0
> > No. of Writes: 11 6
> > 3
> >
> > Block Size: 32768b+ 65536b+
> > No. of Reads: 0 1
> > No. of Writes: 1 1
> > %-latency Avg-latency Min-Latency Max-Latency No. of calls
> > Fop
> > --------- ----------- ----------- ----------- ------------
> > ----
> > 0.00 0.00 us 0.00 us 0.00 us 94
> > RELEASE
> > 0.00 0.00 us 0.00 us 0.00 us 4
> > RELEASEDIR
> > 0.03 37.00 us 37.00 us 37.00 us 1
> > FSTAT
> > 0.04 22.50 us 12.00 us 33.00 us 2
> > READDIR
> > 0.05 20.67 us 17.00 us 28.00 us 3
> > STAT
> > 0.06 77.00 us 77.00 us 77.00 us 1
> > READ
> > 0.07 41.50 us 14.00 us 69.00 us 2
> > GETXATTR
> > 0.10 30.25 us 2.00 us 53.00 us 4
> > OPENDIR
> > 0.13 51.67 us 42.00 us 60.00 us 3
> > SETXATTR
> > 0.35 139.67 us 127.00 us 152.00 us 3
> > MKDIR
> > 0.59 25.46 us 16.00 us 40.00 us 28
> > STATFS
> > 1.48 18.90 us 11.00 us 38.00 us 94
> > FLUSH
> > 3.87 24.00 us 13.00 us 43.00 us 194
> > ENTRYLK
> > 4.00 25.57 us 16.00 us 55.00 us 188
> > FINODELK
> > 5.65 72.37 us 57.00 us 177.00 us 94
> > WRITE
> > 7.38 47.22 us 38.00 us 60.00 us 188
> > REMOVEXATTR
> > 8.28 50.55 us 27.00 us 108.00 us 197
> > SETATTR
> > 8.50 54.41 us 37.00 us 112.00 us 188
> > FXATTROP
> > 13.04 166.86 us 78.00 us 1050.00 us 94
> > CREATE
> > 17.43 26.27 us 11.00 us 85.00 us 798
> > INODELK
> > 28.95 68.04 us 14.00 us 233.00 us 512
> > LOOKUP
> >
> > Duration: 29 seconds
> > Data Read: 78602 bytes
> > Data Written: 365315 bytes
> >
> > Interval 28 Stats:
> > Block Size: 4b+ 32b+
> > 64b+
> > No. of Reads: 0 0
> > 0
> > No. of Writes: 1 5
> > 28
> >
> > Block Size: 128b+ 256b+
> > 512b+
> > No. of Reads: 0 0
> > 0
> > No. of Writes: 59 164
> > 305
> >
> > Block Size: 1024b+ 2048b+
> > 4096b+
> > No. of Reads: 0 0
> > 1
> > No. of Writes: 232 171
> > 165
> >
> > Block Size: 8192b+ 16384b+
> > 32768b+
> > No. of Reads: 0 0
> > 2
> > No. of Writes: 117 96
> > 39
> >
> > Block Size: 65536b+ 131072b+
> > No. of Reads: 11 8
> > No. of Writes: 24 22
> > %-latency Avg-latency Min-Latency Max-Latency No. of calls
> > Fop
> > --------- ----------- ----------- ----------- ------------
> > ----
> > 0.00 0.00 us 0.00 us 0.00 us 1406
> > RELEASE
> > 0.00 0.00 us 0.00 us 0.00 us 265
> > RELEASEDIR
> > 0.00 22.50 us 13.00 us 32.00 us 2
> > READDIR
> > 0.00 30.50 us 19.00 us 42.00 us 2
> > GETXATTR
> > 0.02 35.12 us 28.00 us 45.00 us 16
> > FSTAT
> > 0.06 75.86 us 27.00 us 232.00 us 22
> > READ
> > 0.08 21.99 us 15.00 us 37.00 us 102
> > STAT
> > 0.31 32.43 us 2.00 us 55.00 us 265
> > OPENDIR
> > 0.43 44.88 us 33.00 us 69.00 us 264
> > SETXATTR
> > 0.54 24.82 us 15.00 us 91.00 us 598
> > STATFS
> > 0.84 16.54 us 10.00 us 74.00 us 1406
> > FLUSH
> > 1.89 199.11 us 99.00 us 6678.00 us 263
> > MKDIR
> > 2.39 23.27 us 14.00 us 91.00 us 2840
> > FINODELK
> > 2.58 21.39 us 11.00 us 62.00 us 3339
> > ENTRYLK
> > 2.83 288.06 us 25.00 us 2315.00 us 272
> > READDIRP
> > 3.93 76.22 us 54.00 us 355.00 us 1428
> > WRITE
> > 6.05 59.59 us 36.00 us 42015.00 us 2812
> > REMOVEXATTR
> > 6.34 61.60 us 24.00 us 28264.00 us 2850
> > FXATTROP
> > 6.40 45.78 us 25.00 us 146.00 us 3867
> > SETATTR
> > 10.96 215.75 us 79.00 us 14633.00 us 1406
> > CREATE
> > 12.49 23.78 us 10.00 us 100.00 us 14545
> > INODELK
> > 41.85 71.82 us 14.00 us 55712.00 us 16131
> > LOOKUP
> >
> > Duration: 598 seconds
> > Data Read: 2150643 bytes
> > Data Written: 12210039 bytes
> >
> > Do let me know if you need any other details
> >
> > Thanks
> > Srikanth
> >
> >
> > On Fri, Dec 11, 2015 at 4:15 PM, Anuradha Talur <ata...@redhat.com> wrote:
> >
> >> Response inline.
> >>
> >> ----- Original Message -----
> >> > From: "Srikanth Mampilakal" <shrikanth1...@gmail.com>
> >> > To: gluster-users@gluster.org
> >> > Sent: Thursday, December 10, 2015 7:59:04 PM
> >> > Subject: Re: [Gluster-users] Gluster - Performance issue while copying
> >> bulk files/folders
> >> >
> >> >
> >> >
> >> > Hi members,
> >> >
> >> > Really appreciate if you can share your thoughts or any feedback for
> >> > resolving the slow copy issue
> >> >
> >> > Regards
> >> > Srikanth
> >> > On 10-Dec-2015 2:12 AM, "Srikanth Mampilakal" <
> >> srikanth.mampila...@gmail.com
> >> > > wrote:
> >> >
> >> >
> >> >
> >> > Hi,
> >> >
> >> >
> >> > I have production gluster file service used as a shared storage where
> >> the
> >> > content management system uses it as document root. I have run in to a
> >> > performance issue with the gluster/fuse client.
> >> >
> >> > Looking for your thoughts and experience in resolving Gluster
> >> performance
> >> > issues:
> >> >
> >> > Gluster Infrastructure
> >> >
> >> > Gluster version :GlusterFS 3.7.6
> >> >
> >> > 2 gluster nodes of the same config below
> >> >
> >> > Redhat EL7.0-64
> >> > Memory : 4GB
> >> > Processor : 2 x 2.0 Ghz
> >> > Network : 100 Mbps
> >> > File Storage Volume : NETAPP Storage LUN with 2.0 IOPS/GB
> >> >
> >> > Gluster Volume information:
> >> >
> >> > [root@GlusterFileServe1 ~]# gluster volume info
> >> >
> >> > Volume Name: prodcmsroot
> >> > Type: Replicate
> >> > Volume ID: f1284bf0-1939-46f9-a672-a7716e362947
> >> > Status: Started
> >> > Number of Bricks: 1 x 2 = 2
> >> > Transport-type: tcp
> >> > Bricks:
> >> > Brick1: Server1:/glusterfs/brick1/prodcmsroot
> >> > Brick2: Server2:/glusterfs/brick1/prodcmsroot
> >> > Options Reconfigured:
> >> > performance.io-thread-count: 64
> >> > performance.cache-size: 1073741824
> >> > performance.readdir-ahead: on
> >> > performance.write-behind-window-size: 524288
> >> >
> >> > [root@GlusterFileServe1 ~]#
> >> >
> >> > The replication between Gluster node are quick and consistent.
> >> >
> >> > The apache webservers are accessing the Gluster volume using native
> >> gluster
> >> > fuse client and located in the same VLAN as the Gluster Server.
> >> >
> >> > GlusterFileServe1:/prodcmsroot /mnt/glusterfs glusterfs
> >> > direct-io-mode=disable,defaults,_netdev 0 0
> >> >
> >> > The server utilization (memory,cpu,network and disk 1/0) is relatively
> >> low
> >> >
> >> > I am experiencing very slow performance while copying multiple
> >> file/folders
> >> > (approx 75 MB) and it takes atleast approx 35 min. Even copy a folder
> >> (with
> >> > multiple files/subfolders) within the Gluster volume take the same time.
> >> >
> >> > However, if I do dd to check the copy speed, I get the below result.
> >> >
> >> > [root@ClientServer ~]# time sh -c "dd if=/dev/zero
> >> of=/mnt/testmount/test.tmp
> >> > bs=4k count=20000 && sync"
> >> > 20000+0 records in
> >> > 20000+0 records out
> >> > 81920000 bytes (82 MB) copied, 17.1357 s, 4.8 MB/s
> >> >
> >> > real 0m17.337s
> >> > user 0m0.031s
> >> > sys 0m0.317s
> >> >
> >> >
> >> > Anyone experience the same kind of performance issue, please let me
> >> know your
> >> > thoughts.
> >> >
> >> Hi Srikanth,
> >>
> >> Could you please provide the following information so that the reason
> >> behind
> >> slow copy can be deduced?
> >>
> >> 1) Profile info of the volume when you copy dirs/files into glusterfs.
> >> 2) Profile info of the volume when you copy dirs/files within glusterfs.
> >>
> >> The following steps should help you with profile info:
> >> 1) gluster volume profile <VOLNAME> start
> >> 2) Perform copy operations
> >> 3) gluster volume profile <VOLNAME> info (you will get stats of the FOPs
> >> at this point)
> >> 4) gluster volume profile <VOLNAME> stop
> >>
> >> Please follow steps 1 through 4 twice. Once for copy into glusterfs and
> >> once for copy
> >> within.
> >>
> >> > Cheers
> >> > Srikanth
> >> >
> >> > _______________________________________________
> >> > Gluster-users mailing list
> >> > Gluster-users@gluster.org
> >> > http://www.gluster.org/mailman/listinfo/gluster-users
> >> >
> >> > _______________________________________________
> >> > Gluster-users mailing list
> >> > Gluster-users@gluster.org
> >> > http://www.gluster.org/mailman/listinfo/gluster-users
> >>
> >> --
> >> Thanks,
> >> Anuradha.
> >> _______________________________________________
> >> Gluster-users mailing list
> >> Gluster-users@gluster.org
> >> http://www.gluster.org/mailman/listinfo/gluster-users
> >>
> >
> >
> >
> > --
> > Cheers
> > Shrikanth
> >
>
>
>
> --
> Cheers
> Shrikanth
>
--
Thanks,
Anuradha.
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