Iftarı beklerken usb 3.x vs. SATA

 Bu gün beklerken, usb disk ile eğleneyim direk basit bir test yaptım. Testin sonucunu paylaşıyorum.  USB diskin performansı sata disklerden daha iyi, şaka değil, gerçek.

Artık standart laptoların usb leri 20Gbit kadar verileri destekliyor.

Benim kullandığım usb disk 10Gbit  destekliyor. Normal sata disklerde direk random rw  işlemleri 50MiB/s geçmezken usb disking sonucu aşağıda görebilirsiniz. Bir süre sonra taşınabilir bilgisayarlarda normal sata yuvaları bulmak zor olacaktır. :)

[root@g15 ~]# lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/8p, 20000M/x2
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
        |__ Port 1: Dev 3, If 0, Class=Hub, Driver=hub/4p, 5000M
            |__ Port 1: Dev 5, If 0, Class=Mass Storage, Driver=uas, 5000M
            |__ Port 2: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M
    |__ Port 1: Dev 5, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 1: Dev 6, If 0, Class=Hub, Driver=hub/4p, 480M
            |__ Port 4: Dev 8, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
    |__ Port 3: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
    |__ Port 3: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
    |__ Port 5: Dev 3, If 0, Class=Video, Driver=uvcvideo, 480M
    |__ Port 5: Dev 3, If 1, Class=Video, Driver=uvcvideo, 480M
    |__ Port 14: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
    |__ Port 14: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
    |__ Port 1: Dev 3, If 0, Class=Mass Storage, Driver=uas, 10000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
[root@g15 ~]#

root@g15 RedHat-orico]# fio --name=randwrite --ioengine=libaio --iodepth=8 --rw=randrw --bs=4M --direct=1 --size=1G --numjobs=2 --group_reporting --filename=/run/media/remzi/RedHat-orico/testfile
randwrite: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=libaio, iodepth=8
...
fio-3.29
Starting 2 processes
Jobs: 2 (f=2)
randwrite: (groupid=0, jobs=2): err= 0: pid=24369: Sun Apr 24 15:49:56 2022
  read: IOPS=88, BW=353MiB/s (370MB/s)(992MiB/2810msec)
    slat (usec): min=49, max=24760, avg=1756.16, stdev=3481.07
    clat (msec): min=27, max=221, avg=76.62, stdev=30.72
     lat (msec): min=30, max=221, avg=78.38, stdev=31.12
    clat percentiles (msec):
     |  1.00th=[   32],  5.00th=[   37], 10.00th=[   41], 20.00th=[   48],
     | 30.00th=[   57], 40.00th=[   65], 50.00th=[   72], 60.00th=[   81],
     | 70.00th=[   92], 80.00th=[  102], 90.00th=[  116], 95.00th=[  134],
     | 99.00th=[  150], 99.50th=[  174], 99.90th=[  222], 99.95th=[  222],
     | 99.99th=[  222]
   bw (  KiB/s): min=221184, max=516096, per=99.71%, avg=360448.00, stdev=54312.13, samples=10
   iops        : min=   54, max=  126, avg=88.00, stdev=13.26, samples=10
  write: IOPS=93, BW=376MiB/s (394MB/s)(1056MiB/2810msec); 0 zone resets
    slat (usec): min=121, max=84253, avg=18900.99, stdev=16898.72
    clat (msec): min=24, max=212, avg=70.44, stdev=33.66
     lat (msec): min=26, max=227, avg=89.34, stdev=38.16
    clat percentiles (msec):
     |  1.00th=[   27],  5.00th=[   33], 10.00th=[   35], 20.00th=[   44],
     | 30.00th=[   50], 40.00th=[   58], 50.00th=[   64], 60.00th=[   73],
     | 70.00th=[   81], 80.00th=[   94], 90.00th=[  108], 95.00th=[  140],
     | 99.00th=[  192], 99.50th=[  199], 99.90th=[  213], 99.95th=[  213],
     | 99.99th=[  213]
   bw (  KiB/s): min=270336, max=442368, per=96.22%, avg=370278.40, stdev=32631.18, samples=10
   iops        : min=   66, max=  108, avg=90.40, stdev= 7.97, samples=10
  lat (msec)   : 50=26.95%, 100=54.49%, 250=18.55%
  cpu          : usr=0.86%, sys=1.39%, ctx=4318, majf=0, minf=26
  IO depths    : 1=0.4%, 2=0.8%, 4=1.6%, 8=97.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=99.6%, 8=0.4%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=248,264,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=8

Run status group 0 (all jobs):
   READ: bw=353MiB/s (370MB/s), 353MiB/s-353MiB/s (370MB/s-370MB/s), io=992MiB (1040MB), run=2810-2810msec
  WRITE: bw=376MiB/s (394MB/s), 376MiB/s-376MiB/s (394MB/s-394MB/s), io=1056MiB (1107MB), run=2810-2810msec

Disk stats (read/write):
  sdc: ios=2009/2054, merge=34/26, ticks=62759/53891, in_queue=116649, util=95.96%
[root@g15 RedHat-orico]#