JMeter FTP tests failing on Linux FTP for 1000 users -

JMeter FTP tests failing on Linux FTP for 1000 users -

we firing jmeter ftp tests (1000 users) windows vm on ftp server (rhel 6.2). (ftp 1cpu, 60gb hdd, 4gb ram) , getting below errors after time: response message: java.io.filenotfoundexception: 128kfile (the requested operation cannot performed on file user-mapped section open).

and there 12% errors seen in study after test gets over. here test plan used: thread grouping has 1000 threads. ramp period 600 seconds. total duration 780 seconds. ftp request has server ip, port number 21, remote file , local file given. request get(retr). username , pwd given.

below contents of vsftpd.conf file of rhel ftp

anonymous_enable=yes local_enable=yes write_enable=yes local_umask=022 dirmessage_enable=yes xferlog_enable=yes connect_from_port_20=yes xferlog_std_format=yes listen=yes pam_service_name=vsftpd userlist_enable=yes tcp_wrappers=yes max_per_ip=5000 #max no. of allowed connections per ip address. max_clients=5000 #max no. of different ip addressed allowed connect. anon_max_rate=3600 use_localtime=yes idle_session_timeout=1800 data_connection_timeout=1800

and test never stops on it's own, have forcefully close application. tried running command prompt , facing same issue.

jmeter -n -t ftptest.jmx -l ftptest_itr1.jtl

please suggest way remove errors tests have 100% pass rate.

linux ftp jmeter