[Gluster-users] Gluster Performance - 12 Gbps SSDs and 10 Gbps NIC

[Danny]

 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>
> 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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>
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