[Bugs] [Bug 1370092] VERY poor replica write perfomance

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1370092



--- Comment #1 from Badalyan Vyacheslav <v.badalyan at open-bs.ru> ---
With write window = 1GB

[root at xintel1 cmdline]# dd if=/tmp/1/1.bin of=/tmp/0/1.bin bs=128M
 скопировано 536870912 байт (537 MB), 0,766988 c, 700 MB/c

[root at xintel1 cmdline]# dd if=/tmp/1/1.bin of=/tmp/0/1.bin bs=128M
 скопировано 536870912 байт (537 MB), 0,807878 c, 665 MB/c

[root at xintel1 cmdline]# dd if=/tmp/1/1.bin of=/tmp/0/1.bin bs=128M
 скопировано 536870912 байт (537 MB), 0,861966 c, 623 MB/c

[root at xintel1 cmdline]# dd if=/tmp/1/1.bin of=/tmp/0/1.bin bs=128M
 скопировано 536870912 байт (537 MB), 0,798036 c, 673 MB/c

[root at xintel1 cmdline]# dd if=/tmp/1/1.bin of=/tmp/0/1.bin bs=128M
 скопировано 536870912 байт (537 MB), 1,59656 c, 336 MB/c

[root at xintel1 cmdline]# dd if=/tmp/1/1.bin of=/tmp/0/1.bin bs=128M
 скопировано 536870912 байт (537 MB), 1,30761 c, 411 MB/c

[root at xintel1 cmdline]# dd if=/tmp/1/1.bin of=/tmp/0/1.bin bs=128M
 скопировано 536870912 байт (537 MB), 1,23974 c, 433 MB/c

[root at xintel1 cmdline]# dd if=/tmp/1/1.bin of=/tmp/0/1.bin bs=512M
 скопировано 536870912 байт (537 MB), 1,89813 c, 283 MB/c

[root at xintel1 cmdline]# dd if=/tmp/1/1.bin of=/tmp/0/1.bin bs=512M
 скопировано 536870912 байт (537 MB), 1,0454 c, 514 MB/c

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