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seen Sep 17 at 22:33

Aug
24
comment Fast imap server for larger folders
Thank you for the link and diagram. I have done some subjective "feel" benchmarking and it seems that dovecot is slightly faster once it has cached the index, but since emails keep trickling in the cache is soon invalidated so in practice I get the slow hit every time I open the mailbox. dbmail seems to take the hit incrementally on email insertion (makes sense), so it's while it may not be quite as fast, I never get the 10s wait to open a folder. Tested with 44'000 emails in a box.
Aug
24
comment In Linux can I send a running window to a new $DISPLAY?
It's a problem, yes. I want to have "screen" for X apps.
Aug
24
answered In Linux can I send a running window to a new $DISPLAY?
Aug
24
answered “bus error” when trying to reboot Linux
Aug
24
comment Fast imap server for larger folders
I've tried to optimize using the tuning page. This is as good as I got it. I'll try dbox.
Aug
24
revised Fast imap server for larger folders
Folder, not inbox
Aug
24
comment Fast imap server for larger folders
And not 40'000 mail headers. They are loaded on demand if I scroll.
Aug
24
comment Fast imap server for larger folders
My point is that it's not much data. 40'000 entries is nothing to a database. It shouldn't be much for an imap server. It's a virtual machine (KVM on Linux) on a quad-core 2.4GHz with raid5 and 8GB RAM, but I've seen this on a physical machine as well. I've benchmarked the disks and network and I get about than 100MByte/sec. But remember that all this is just reading select mail headers (from, flags, subject) of about 40 (the latest) of 40'000 emails. Not even the 40 mail bodies.
Aug
24
comment Fast imap server for larger folders
Yes, I'm using the indexing. The thing that confuses me is that an SQL database would not take 10 seconds to list the newest 40 rows (when properly indexed). I've updated the question with this.
Aug
24
revised Fast imap server for larger folders
SQl is faster
Aug
24
asked Fast imap server for larger folders
Aug
23
answered Automatic postgres backup
Aug
23
revised Differences between SSH's tunnels and OpenVPN
added 58 characters in body
Aug
23
answered Differences between SSH's tunnels and OpenVPN
Aug
15
comment Do routers have IP Addresses?
Almost right. On multiaccess networks the IP is of course used to find what circuit (frame relay or ATM) or what destination MAC (ethernet) the router is on. Not needed for the router itself though. So maintenance is not the only reason.
Aug
15
comment Do routers have IP Addresses?
Another way to have a router that routes but only has one IP address would be to have it route through unnumbered tunnels (MPLS TE tunnels come to mind). They definately do routing, and have a routing table that they use. But this is all for extra credit. The simple answer for one who has to ask is as you say; a router is a device with addresses on at least two networks, and it performs routing between them. It's not the definition for a router though.
Aug
15
comment Do routers have IP Addresses?
slovon: You can call it an elephant if you want, it's still a router with a routing table that takes routing (layer3) decisions. A bridge is something else.
Aug
14
comment How do MySQL logs compare to Postgresql logs?
If you could briefly sum up what those logs are on mysql it would be easier for the postgresql-only experts to answer.
Aug
13
comment Linux Bash Syntax: Meaning of &&, \, and -
"/" is not the same as "\"
Aug
9
answered Network port open, but no process attached?