Re: [KVM-AUTOTEST PATCH] Adding iperf test

Lucas Meneghel Rodrigues
2009-06-16T21:40:56Z

On Tue, 2009-06-16 at 18:29 -0300, Lucas Meneghel Rodrigues wrote:
> Adding iperf network performance test. Basically it tests
> networking functionality, stability and performance of guest OSes.
> This test is cross-platform -- i.e. it works on both Linux and
> Windows VMs.

Ok, now that I had rebased the test, I have a few comments to say:

* I don't like the idea to ship binaries inside the test. Fair enough
that we don't support other archs than x86 and x86_64 (also there's the
problem windows usually doesn't ship a working toolchain), but I would
like to think a bit more about it.
* Autotest already does have an iperf test, that could be used on Linux
guests. Sure there's a problem of matching what's being executed on
windows, but it's worth a look
* Autotest iperf test usually runs with 2 machines, one in 'server'
role and other in 'client' mode. I would like to pursue the same model,
2 vms, one running as a server and another as a client.

Alexey and Yaniv, I'd like to hear your opinions on this.

Thanks,

> Signed-off-by: Alexey Eromenko <aeromenk@redhat.com>
> ---
> client/tests/kvm/kvm.py | 1 +
> client/tests/kvm/kvm_iperf.py | 105 +++++++++++++++++++++++++++++++++
> client/tests/kvm/kvm_tests.cfg.sample | 8 +++
> 3 files changed, 114 insertions(+), 0 deletions(-)
> create mode 100644 client/tests/kvm/kvm_iperf.py
>
> diff --git a/client/tests/kvm/kvm.py b/client/tests/kvm/kvm.py
> index 9428162..e1a6e27 100644
> --- a/client/tests/kvm/kvm.py
> +++ b/client/tests/kvm/kvm.py
> @@ -53,6 +53,7 @@ class kvm(test.test):
> "autotest": test_routine("kvm_tests", "run_autotest"),
> "kvm_install": test_routine("kvm_install", "run_kvm_install"),
> "linux_s3": test_routine("kvm_tests", "run_linux_s3"),
> + "iperf": test_routine("kvm_iperf", "run_iperf"),
> }
>
> # Make it possible to import modules from the test's bindir
> diff --git a/client/tests/kvm/kvm_iperf.py b/client/tests/kvm/kvm_iperf.py
> new file mode 100644
> index 0000000..927c9e5
> --- /dev/null
> +++ b/client/tests/kvm/kvm_iperf.py
> @@ -0,0 +1,105 @@
> +import time, os, logging
> +from autotest_lib.client.common_lib import utils, error
> +import kvm_utils
> +
> +def run_iperf(test, params, env):
> + """
> + Runs iperf on the guest system and brings back the result.
> +
> + @see: http://sourceforge.net/projects/iperf
> + @param test: kvm test object
> + @param params: Dictionary with test parameters
> + @param env: Test environment
> + """
> + vm = kvm_utils.env_get_vm(env, params.get("main_vm"))
> + if not vm:
> + message = "VM object not found in environment"
> + logging.error(message)
> + raise error.TestError, message
> + if not vm.is_alive():
> + message = "VM seems to be dead; Test requires a living VM"
> + logging.error(message)
> + raise error.TestError(message)
> +
> + logging.info("Waiting for guest to be up...")
> +
> + session = kvm_utils.wait_for(vm.ssh_login, 240, 0, 2)
> + if not session:
> + message = "Could not log into guest"
> + logging.error(message)
> + raise error.TestFail, message
> +
> + logging.info("Logged in")
> +
> + # Checking for GuestOS-compatible iPerf binary existence on host.
> + iperf_binary = params.get("iperf_binary", "misc/iperf")
> + iperf_duration = params.get("iperf_duration", 5)
> + iperf_parallel_threads = params.get("iperf_parallel_threads", 1)
> + iperf_dest_ip = params.get("iperf_dest_ip", "10.0.2.2")
> + iperf_binary = os.path.join(test.bindir, iperf_binary)
> + if not os.path.exists(iperf_binary):
> + message = "iPerf binary: %s was not found on host" % iperf_binary
> + logging.error(message)
> + raise error.TestError, message
> + else:
> + logging.info("iPerf binary: %s was found on host" % iperf_binary)
> +
> + # Starting HostOS-compatible iPerf Server on host
> + logging.info('VM is up ... \n starting iPerf Server on host')
> + kvm_utils.run_bg("iperf -s", timeout=5)
> +
> + # Detecting GuestOS
> + if iperf_binary.__contains__("exe"):
> + vm_type="win32"
> + else:
> + vm_type="linux32"
> +
> + # Copying GuestOS-compatible iPerf binary to guest.
> + # Starting iPerf Client on guest, plus connect to host.
> + if vm_type == "win32":
> + win_dir = "/cygdrive/c/"
> + logging.info('starting copying %s to Windows VM to %s' % (iperf_binary,
> + win_dir))
> + if not vm.scp_to_remote(iperf_binary, win_dir):
> + message = "Could not copy Win32 iPerf to guest"
> + logging.error(message)
> + raise error.TestError(message)
> + logging.debug("Enabling file permissions of iPerf.exe on Windows VM...")
> + session.sendline('cacls C:\iperf.exe /P Administrator:F')
> + session.sendline('y')
> + session.sendline('')
> + time.sleep(2)
> + session.sendline('')
> + logging.info("starting iPerf client on Windows VM, connecting to host")
> + session.sendline('C:\iperf -t %s -c %s -P %s' % (int(iperf_duration),
> + iperf_dest_ip,
> + int(iperf_parallel_threads)))
> + else:
> + logging.info('starting copying %s to Linux VM ' % iperf_binary)
> + if not vm.scp_to_remote(iperf_binary, "/usr/local/bin"):
> + message = "Could not copy Linux iPerf to guest"
> + logging.error(message)
> + raise error.TestError, message
> + print "starting iPerf client on VM, connecting to host"
> + session.sendline('iperf -t %s -c %s -P %s' % (int(iperf_duration),
> + iperf_dest_ip,
> + int(iperf_parallel_threads)))
> +
> + # Analyzing results
> + iperf_result_match, iperf_result = session.read_up_to_prompt()
> + logging.debug("iperf_result =", iperf_result)
> +
> + if iperf_result.__contains__(" 0.00 bits/sec"):
> + msg = 'Guest returned 0.00 bits/sec during iperf test.'
> + raise error.TestError(msg)
> + elif iperf_result.__contains__("No route to host"):
> + msg = 'SSH to guest returned: No route to host.'
> + raise error.TestError(msg)
> + elif iperf_result.__contains__("Access is denied"):
> + msg = 'SSH to guest returned: Access is denied.'
> + raise error.TestError(msg)
> + elif not iperf_result.__contains__("bits/sec"):
> + msg = 'SSH result unrecognizeable.'
> + raise error.TestError(msg)
> +
> + session.close()
> diff --git a/client/tests/kvm/kvm_tests.cfg.sample b/client/tests/kvm/kvm_tests.cfg.sample
> index 2c0b321..931f748 100644
> --- a/client/tests/kvm/kvm_tests.cfg.sample
> +++ b/client/tests/kvm/kvm_tests.cfg.sample
> @@ -82,6 +82,10 @@ variants:
> - linux_s3: install setup
> type = linux_s3
>
> + - iperf: install setup
> + type = iperf
> + extra_params += " -snapshot"
> +
> # NICs
> variants:
> - @rtl8139:
> @@ -102,6 +106,8 @@ variants:
> ssh_status_test_command = echo $?
> username = root
> password = 123456
> + iperf:
> + iperf_binary = misc/iperf
>
> variants:
> - Fedora:
> @@ -292,6 +298,8 @@ variants:
> password = 123456
> migrate:
> migration_test_command = ver && vol
> + iperf:
> + iperf_binary = misc/iperf.exe
>
> variants:
> - Win2000:
--
Lucas Meneghel Rodrigues
Software Engineer (QE)
Red Hat - Emerging Technologies