4,156 reputation
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bio website BlackMesh.com
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visits member for 3 years, 9 months
seen Apr 1 at 19:18

Director of Emerging Technology at BlackMesh Managed Hosting, longtime Linux aficionado, sometime Drupal developer (and d.o sysadmin), and occasional filesystem tinkerer.


Feb
7
answered Varnish not showing custom headers
Feb
4
answered Apache virtual hosts for Drupal and fixed websites
Feb
4
comment Mysql very slow, out-of-the-box configuration
@Netismine: You want to attach it to the "mysqld" process. Can you post your my.cnf in the question section as an edit, so it's easier to read?
Jan
3
comment Running drupal as root in order for it to run bash scripts
If running on RHEL (or similar), you'll also need to add: Defaults:www-data !requiretty
Jan
3
answered Mysql very slow, out-of-the-box configuration
Oct
10
answered Drupal on an NFS share has terrible performance
Oct
10
answered ngnix simple location match, what does it mean
Aug
14
comment One ip on port 80 with mutiable vhost different names and ports
Why are the VHosts on port 8080 and 8081, respectively? What is port 80 doing, then? Is there a proxy in here somewhere, or is Apache acting as one?
Jul
31
comment large number of InnoDB tables plus SHOW TABLE STATUS
You didn't mention whether you were using 5.5, 5.1 with InnoDB plugin, or something older/nastier. If using something older, you may need to adjust the innodb_additional_mem_pool_size. Related question: Do you see anything in the mysql error log during SHOW TABLE STATUS runs?
Jul
31
comment large number of InnoDB tables plus SHOW TABLE STATUS
Your table_open_cache appears to be too small, but otherwise your settings seem reasonable, if a bit arbitrary (5400 MB buffer pool, rather than 5 GB even?). Try bumping table_open_cache to 1536 and see what happens.
Jul
25
comment large number of InnoDB tables plus SHOW TABLE STATUS
Are these databases actually in their own .ibds? What's the size of your innodb_buffer_pool? How are table_open_cache, open_files_limit, and the sysctl fs.file-max set? How much memory do you have under Cached in free -m? What's your vm.vfs_cache_pressure set to? Is your disk subsystem performant? I'm beating so hard on this because generating table statistics should be very, very fast in the vast majority of cases; if it's not, that's at best a misconfiguration, because otherwise it's a bug.
Jul
25
comment DNS resolve timeout on RHEL 6.3 behind firewall
Excellent reply. Deleting mine so as to better emphasize yours. :)
Jul
25
comment large number of InnoDB tables plus SHOW TABLE STATUS
By any chance, do you have innodb_file_per_table enabled? If not, try enabling it (and dumping, dropping, and re-importing the tables). I suspect that would allow the disk reads to be much more intelligent than they are when ibdata1 is getting hit for everything.
Jul
25
answered large number of InnoDB tables plus SHOW TABLE STATUS
Jul
13
revised How would you simplify this command?
He's using a distribution which, as Ubuntu and Debian do, uses `apache2` instead of `httpd` as the name of the Apache binary.; added 6 characters in body; added 27 characters in body
Jul
13
comment How would you simplify this command?
This script straces into the telnet, not into the Apache process that's serving it.
Jul
3
revised How would you simplify this command?
added 193 characters in body
Jul
3
answered How would you simplify this command?
Jun
24
awarded  Yearling
Jun
15
comment CentOS - PHP - Yum Install with Custom ./configure params
--target is typically not necessary unless you're cross-compiling, but check your spec file for other requirements. For example, for building a CentOS 6 kernel, you'll typically want --with-firmware and -D 'dist el6' -D 'rhel 6'.