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bio website serverfault.com
location Montreal, Canada
age 38
visits member for 4 years, 11 months
seen 14 hours ago

I am Linux and middleware administrator and seasonal php/python programmer.


Nov
11
reviewed No Action Needed Unable to open/copy files on an encrypted UNC share after reboot of file server
Nov
11
reviewed No Action Needed ldap/AD proxy: Unable to bind using sAMAccountName, but last name and first name is able to bind
Nov
10
comment ISC DHCP infinite lease time
You could create a script that is adding all new hosts to the static lease list. This script could send you an email when you run out of IP addresses in that pool. Or send you an email each time a new IP/MAC was detected in the network. In this way you have the convenience of DHCP, you have the same IP assigned to the same NIC. And you have full control to change all this in a instant if you need it, and you can have static IPs too if you must. Modern DHCP server can be instructed to send an ARP request before assigning a lease for an IP.
Nov
5
revised ps aux hanging on high cpu/IO with java processes
added 43 characters in body
Nov
5
comment ps aux hanging on high cpu/IO with java processes
This is a very good argument. Thank you for rising up. However I think that the chances for strace to start when your swap is not answering are low, but not impossible. I will update my answer.
Oct
30
answered ps aux hanging on high cpu/IO with java processes
Oct
29
awarded  Notable Question
Oct
26
reviewed Approve How to repair the fstab file with current configuration
Oct
22
comment All my harddrives are around 10 MB/s read/write
You can use strace -c cp .... to determine where the CPU time is spend (reads/writes vs userspace). Then you can use sysdig, ftrace/trace-cmd or sytemtap to see what is happening at the kernel level.
Oct
22
comment All my harddrives are around 10 MB/s read/write
So first determine what is the raw speed of the disk (both for linear and random operations), then compare it with the current speed.
Oct
22
comment All my harddrives are around 10 MB/s read/write
Are you moving it on the same disk, on another disk? The real speed vs disk raw speed could be affected (positively and negatively) by alignment, fragmentation, encryption, snapshot, compression, deduplication, caching, RAID level, mount options...
Oct
21
answered All my harddrives are around 10 MB/s read/write
Oct
15
awarded  Popular Question
Oct
15
awarded  Notable Question
Oct
6
reviewed Approve Installed libssh2-php but no ssh2 with php -m
Sep
30
awarded  Explainer
Sep
24
comment Server hacked and used for sending spam
The question should not be "whole server or just exim?", but rather "the whole VLAN or only the server?"
Sep
23
awarded  Revival
Sep
6
awarded  Popular Question
Sep
3
awarded  Popular Question