[Gluster-users] Gluster Performance - 12 Gbps SSDs and 10 Gbps NIC
Ramon Selga
ramon.selga at gmail.com
Tue Dec 12 18:52:15 UTC 2023
May ask you which kind of disks you have in this setup? rotational, ssd
SAS/SATA, nvme?
Is there a RAID controller with writeback caching?
It seems to me your fio test on local brick has a unclear result due to some
caching.
Try something like (you can consider to increase test file size depending of
your caching memory) :
fio --size=16G --name=test --filename=/gluster/data/brick/wow --bs=1M
--nrfiles=1 --direct=1 --sync=0 --randrepeat=0 --rw=write --refill_buffers
--end_fsync=1 --iodepth=200 --ioengine=libaio
Also remember a replica 3 arbiter 1 volume writes synchronously to two data
bricks, halving throughput of your network backend.
Try similar fio on gluster mount but I hardly see more than 300MB/s writing
sequentially on only one fuse mount even with nvme backend. On the other side,
with 4 to 6 clients, you can easily reach 1.5GB/s of aggregate throughput
To start, I think is better to try with default parameters for your replica volume.
Best regards!
Ramon
El 12/12/23 a les 19:10, Danny ha escrit:
> Sorry, I noticed that too after I posted, so I instantly upgraded to 10. Issue
> remains.
>
> On Tue, Dec 12, 2023 at 1:09 PM Gilberto Ferreira <gilberto.nunes32 at gmail.com>
> wrote:
>
> I strongly suggest you update to version 10 or higher.
> It's come with significant improvement regarding performance.
> ---
> Gilberto Nunes Ferreira
> (47) 99676-7530 - Whatsapp / Telegram
>
>
>
>
>
>
> Em ter., 12 de dez. de 2023 às 13:03, Danny <dbray925+gluster at gmail.com
> <mailto:dbray925%2Bgluster at gmail.com>> escreveu:
>
> MTU is already 9000, and as you can see from the IPERF results, I've
> got a nice, fast connection between the nodes.
>
> On Tue, Dec 12, 2023 at 9:49 AM Strahil Nikolov
> <hunter86_bg at yahoo.com> wrote:
>
> Hi,
>
> Let’s try the simple things:
>
> Check if you can use MTU9000 and if it’s possible, set it on the
> Bond Slaves and the bond devices:
> ping GLUSTER_PEER -c 10 -M do -s 8972
>
> Then try to follow up the recommendations from
> https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.5/html/administration_guide/chap-configuring_red_hat_storage_for_enhancing_performance
>
>
>
> Best Regards,
> Strahil Nikolov
>
> On Monday, December 11, 2023, 3:32 PM, Danny
> <dbray925+gluster at gmail.com <mailto:dbray925%2Bgluster at gmail.com>>
> wrote:
>
> Hello list, I'm hoping someone can let me know what setting I
> missed.
>
> Hardware:
> Dell R650 servers, Dual 24 Core Xeon 2.8 GHz, 1 TB RAM
> 8x SSD s Negotiated Speed 12 Gbps
> PERC H755 Controller - RAID 6
> Created virtual "data" disk from the above 8 SSD drives, for a
> ~20 TB /dev/sdb
>
> OS:
> CentOS Stream
> kernel-4.18.0-526.el8.x86_64
> glusterfs-7.9-1.el8.x86_64
>
> IPERF Test between nodes:
> [ ID] Interval Transfer Bitrate Retr
> [ 5] 0.00-10.00 sec 11.5 GBytes 9.90 Gbits/sec 0
> sender
> [ 5] 0.00-10.04 sec 11.5 GBytes 9.86 Gbits/sec
> receiver
>
> All good there. ~10 Gbps, as expected.
>
> LVM Install:
> export DISK="/dev/sdb"
> sudo parted --script $DISK "mklabel gpt"
> sudo parted --script $DISK "mkpart primary 0% 100%"
> sudo parted --script $DISK "set 1 lvm on"
> sudo pvcreate --dataalignment 128K /dev/sdb1
> sudo vgcreate --physicalextentsize 128K gfs_vg /dev/sdb1
> sudo lvcreate -L 16G -n gfs_pool_meta gfs_vg
> sudo lvcreate -l 95%FREE -n gfs_pool gfs_vg
> sudo lvconvert --chunksize 1280K --thinpool gfs_vg/gfs_pool
> --poolmetadata gfs_vg/gfs_pool_meta
> sudo lvchange --zero n gfs_vg/gfs_pool
> sudo lvcreate -V 19.5TiB --thinpool gfs_vg/gfs_pool -n gfs_lv
> sudo mkfs.xfs -f -i size=512 -n size=8192 -d su=128k,sw=10
> /dev/mapper/gfs_vg-gfs_lv
> sudo vim /etc/fstab
> /dev/mapper/gfs_vg-gfs_lv /gluster/data/brick xfs
> rw,inode64,noatime,nouuid 0 0
>
> sudo systemctl daemon-reload && sudo mount -a
> fio --name=test --filename=/gluster/data/brick/wow --size=1G
> --readwrite=write
>
> Run status group 0 (all jobs):
> WRITE: bw=2081MiB/s (2182MB/s), 2081MiB/s-2081MiB/s
> (2182MB/s-2182MB/s), io=1024MiB (1074MB), run=492-492msec
>
> All good there. 2182MB/s =~ 17.5 Gbps. Nice!
>
>
> Gluster install:
> export NODE1='10.54.95.123'
> export NODE2='10.54.95.124'
> export NODE3='10.54.95.125'
> sudo gluster peer probe $NODE2
> sudo gluster peer probe $NODE3
> sudo gluster volume create data replica 3 arbiter 1
> $NODE1:/gluster/data/brick $NODE2:/gluster/data/brick
> $NODE3:/gluster/data/brick force
> sudo gluster volume set data network.ping-timeout 5
> sudo gluster volume set data performance.client-io-threads on
> sudo gluster volume set data group metadata-cache
> sudo gluster volume start data
> sudo gluster volume info all
>
> Volume Name: data
> Type: Replicate
> Volume ID: b52b5212-82c8-4b1a-8db3-52468bc0226e
> Status: Started
> Snapshot Count: 0
> Number of Bricks: 1 x (2 + 1) = 3
> Transport-type: tcp
> Bricks:
> Brick1: 10.54.95.123:/gluster/data/brick
> Brick2: 10.54.95.124:/gluster/data/brick
> Brick3: 10.54.95.125:/gluster/data/brick (arbiter)
> Options Reconfigured:
> network.inode-lru-limit: 200000
> performance.md-cache-timeout: 600
> performance.cache-invalidation: on
> performance.stat-prefetch: on
> features.cache-invalidation-timeout: 600
> features.cache-invalidation: on
> network.ping-timeout: 5
> transport.address-family: inet
> storage.fips-mode-rchecksum: on
> nfs.disable: on
> performance.client-io-threads: on
>
> sudo vim /etc/fstab
> localhost:/data /data glusterfs
> defaults,_netdev 0 0
>
> sudo systemctl daemon-reload && sudo mount -a
> fio --name=test --filename=/data/wow --size=1G --readwrite=write
>
> Run status group 0 (all jobs):
> WRITE: bw=109MiB/s (115MB/s), 109MiB/s-109MiB/s
> (115MB/s-115MB/s), io=1024MiB (1074MB), run=9366-9366msec
>
> Oh no, what's wrong? From 2182MB/s down to only 115MB/s? What
> am I missing? I'm not expecting the above ~17 Gbps, but I'm
> thinking it should at least be close(r) to ~10 Gbps.
>
> Any suggestions?
> ________
>
>
>
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> ________
>
>
>
> Community Meeting Calendar:
>
> Schedule -
> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC
> Bridge: https://meet.google.com/cpu-eiue-hvk
> Gluster-users mailing list
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> https://lists.gluster.org/mailman/listinfo/gluster-users
>
>
> ________
>
>
>
> Community Meeting Calendar:
>
> Schedule -
> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC
> Bridge:https://meet.google.com/cpu-eiue-hvk
> Gluster-users mailing list
> Gluster-users at gluster.org
> https://lists.gluster.org/mailman/listinfo/gluster-users
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