----- Original Message ----- > From: "Laurence Oberman" <loberman@xxxxxxxxxx> > To: "Bart Van Assche" <Bart.VanAssche@xxxxxxxxxxx> > Cc: linux-rdma@xxxxxxxxxxxxxxx > Sent: Tuesday, December 20, 2016 2:33:26 PM > Subject: Re: Testing latest linux-next 4.9 ib_srp and ib_srpt > > Hello Bart > > I pulled the latest linux-next and built kernels for both server and client > to rerun all my EDR tests for srp. > > For some reason the I/O size is being capped again to 1MB in my testing. > Using my same testbed. > Remember we spent a lot of time making sure we could do 4MB I/O :) > > Its working fine in the RHEL 7.3 kernel so before I start going back testing > upstream kernels decided to ask. > > Have you tested large I/O with latest linux-next > > Server Configuration > --------------------- > Linux fedstorage.bos.redhat.com 4.9.0+ > > [root@fedstorage modprobe.d]# cat ib_srp.conf > options ib_srp cmd_sg_entries=64 indirect_sg_entries=2048 > > [root@fedstorage modprobe.d]# cat ib_srpt.conf > options ib_srpt srp_max_req_size=8296 > > Also Using > > # Set the srp_sq_size > for i in /sys/kernel/config/target/srpt/0xfe800000000000007cfe900300726e4e > /sys/kernel/config/target/srpt/0xfe800000000000007cfe900300726e4f > do > echo 16384 > $i/tpgt_1/attrib/srp_sq_size > done > > Client Configuration > -------------------- > Linux ibclient 4.9.0+ > > [root@ibclient modprobe.d]# cat ib_srp.conf > options ib_srp cmd_sg_entries=255 indirect_sg_entries=2048 > > dd if=/dev/sdw bs=4096k of=/dev/null iflag=direct > > ### RECORD 4 >>> ibclient <<< (1482261733.001) (Tue Dec 20 14:22:13 2016) > ### > # DISK STATISTICS (/sec) > # > <---------reads---------------><---------writes--------------><--------averages--------> > Pct > #Time Name KBytes Merged IOs Size Wait KBytes Merged IOs Size > Wait RWSize QLen Wait SvcTim Util > 14:22:13 sdw 1373184 0 1341 1024 2 0 0 0 0 > 0 1024 3 2 0 97 > > > If I reboot into my 7.3 kernel its back to what I expect > > dd if=/dev/sdw bs=4096k of=/dev/null iflag=direct > > > ### RECORD 3 >>> ibclient <<< (1482262254.001) (Tue Dec 20 14:30:54 2016) > ### > # DISK STATISTICS (/sec) > # > <---------reads---------------><---------writes--------------><--------averages--------> > Pct > #Time Name KBytes Merged IOs Size Wait KBytes Merged IOs Size > Wait RWSize QLen Wait SvcTim Util > 14:30:54 sdw 172032 129 42 4096 3 0 0 0 0 > 0 4096 1 3 3 130 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Hi Bart, Just FYI That dd snap was just as I had stopped the dd. Here is a stable dd snap with the RHEL kernel, I just noticed the merging, need to reboot back into upstream to compare again. No merging seen in upstream. Thanks Laurence ### RECORD 6 >>> ibclient <<< (1482262723.001) (Tue Dec 20 14:38:43 2016) ### # DISK STATISTICS (/sec) # <---------reads---------------><---------writes--------------><--------averages--------> Pct #Time Name KBytes Merged IOs Size Wait KBytes Merged IOs Size Wait RWSize QLen Wait SvcTim Util 14:38:43 sdw 1200128 879 293 4096 3 0 0 0 0 0 4096 1 3 3 95 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
