Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Server Fault. Closed 3 years ago. Improve this question Apologies if this is wrong place for this. I was directed to this board as it’s a server issue. There’s a server that … Read more
I have W2008 R2 server on colocation. I am getting weird cyclical lags – several times a minute latency jumps and then gradually drops back. I can tell becuase the service I consume sends me local timestamps. The remote server synced with Stratum 1 with atomic clock and very precise. I synced with local Stratum … Read more
I have a Windows 10 machine that is connected over MS VPN to a company intranet. All traffic to this company intranet and to the internet go over the VPN. When using remote desktop over the VPN the input/response lags significantly thus rendering it useless. I encountered that this seems to be the case for … Read more
Command: [mysql] root:/mnt# pt-pmp –pid 16898 Wed Dec 7 18:41:51 UTC 2016 warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7fffd4126000 18 libaio::??(libaio.so.1),::??,::??,::??,start_thread(libpthread.so.0),clone(libc.so.6),?? 6 pthread_cond_wait,one_thread_per_connection_end,do_handle_one_connection,handle_one_connection,start_thread(libpthread.so.0),clone(libc.so.6),?? 3 select(libc.so.6),::??,::??,start_thread(libpthread.so.0),clone(libc.so.6),?? 3 read(libpthread.so.0),::??,my_net_read,do_command,do_handle_one_connection,handle_one_connection,start_thread(libpthread.so.0),clone(libc.so.6),?? 3 pthread_cond_timedwait,::??,::??,start_thread(libpthread.so.0),clone(libc.so.6),?? 1 read(libpthread.so.0),vio_read_buff,::??,my_net_read,cli_safe_read,handle_slave_io,start_thread(libpthread.so.0),clone(libc.so.6),?? 1 pthread_cond_timedwait,MYSQL_BIN_LOG::wait_for_update_bin_log,mysql_binlog_send,dispatch_command,do_handle_one_connection,handle_one_connection,start_thread(libpthread.so.0),clone(libc.so.6),?? 1 poll(libc.so.6),handle_connections_sockets,mysqld_main,__libc_start_main(libc.so.6),_start 1 fsync(libpthread.so.0),::??,::??,::??,::??,::??,::??,ha_commit_trans,trans_commit,Xid_log_event::do_apply_event,apply_event_and_update_pos,handle_slave_sql,start_thread(libpthread.so.0),clone(libc.so.6),?? 1 do_sigwait(libpthread.so.0),sigwait(libpthread.so.0),signal_hand,start_thread(libpthread.so.0),clone(libc.so.6),?? Versions: [mysql] root:/mnt# pt-pmp –version pt-pmp 2.2.19 [mysql] root:/mnt# gdb –version … Read more
Starting a few weeks ago, at seemingly random intervals, 3 of 5 PCs will lag at the same time for a few seconds to the extent where mouse and keyboard input is delayed and VoIP calls are dropped. After ruling out a few potential root causes, I suspected that something on the network was causing … Read more
We recently reinstalled 3 of our mysql servers running in master slave with percona 5.7 and ubuntu 18.04 instead of oracle linux 7. These servers are currently connected to a mysql 5.6 master. And since the reinstallation we are getting way more slave lag than when we were running mysql 5.6 on the slaves (it … Read more
I am working on a project which can redirect the network traffic in tcp (packets sent by client to server1 will be redirected to server2) with netfilterqueue, so I need to classify the packets by their syn and ack flags, and I also needs to modify the sequence number and acknowledgement number in packets so … Read more
I use nginx to serve the static content for a decently busy website of mine. I have the logging disabled, and 4 worker processes enabled with 5,000 connections per worker (which should yield a max connection limit of 20,000. The server is only operating at about 10% CPU usage and 50% ram, but it’s very … Read more
On fixing an issue we are having with our backups I am following instructions where it is telling me to add the Trace Flag -g384. This is all good but I am not sure what this perameter actually does. I have had a quick google but have come up with nothing. Does anyone know what … Read more
I’m trying to configure Link Aggregation between my two switches, on the DELL switch, there is only an option to include a port in a “LAG Group.” On the Cisco’s I’ve tried creating an EtherChannel group with “Dynamic Desirable” (set to negotiate). I have also tried to setup the ports as 802.11Q as well as … Read more
