search for: corked

Slightly RFC, as I need more time to investigate why Unix sockets appeared to degrade with this patch. But as TCP sockets (over loopback to localhost) and TLS sessions (regardless of underlying Unix or TCP) both showed improvements, this looks like a worthwhile series. Eric Blake (2): server: Add support for corking server: Cork around grouped transmission send()s server/internal.h | 3

As mentioned in the previous patch, sending small packets as soon as possible leads to network packet overhead. Grouping related writes under corking appears to help everything but unencrypted Unix plain sockets. I tested with appropriate combinations from: $ nbdkit {-p 10810,-U -} \ {--tls=require --tls-verify-peer --tls-psk=./keys.psk,} memory size=64m \ --run

Any time we reply to NBD_CMD_READ or NBD_CMD_BLOCK_STATUS, we end up calling conn->send() more than once. Now that we've disabled Nagle's algorithm, this implies that we try harder to send the small header immediately, rather than batching it with the rest of the payload, which causes more overhead in the amount of actual network traffic. For interfaces that support corking (gnutls, or

...a/server/crypto.c +++ b/server/crypto.c @@ -345,6 +345,12 @@ crypto_recv (struct connection *conn, void *vbuf, size_t len) return 1; } +/* If this send()'s length is so large that it is going to require + * multiple TCP segments anyway, there's no need to try and merge it + * with any corked data from a previous send that used SEND_MORE. + */ +#define MAX_SEND_MORE_LEN (64 * 1024) + /* Write buffer to GnuTLS and either succeed completely * (returns 0) or fail (returns -1). flags is ignored for now. */ @@ -357,7 +363,11 @@ crypto_send (struct connection *conn, const void *vbuf, siz...

On Fri, Mar 24, 2023 at 11:47:20AM +0100, Florian Westphal wrote: > qemu-nbd doesn't set TCP_NODELAY on the tcp socket. > > Kernel waits for more data and avoids transmission of small packets. > Without TLS this is barely noticeable, but with TLS this really shows. > > Booting a VM via qemu-nbd on localhost (with tls) takes more than > 2 minutes on my system. tcpdump

I did chmod -R 777 /var/lib/dovecot and it worked. I just need to figure out what the correct setting are. Thanks everyone //Ger ----------------original message----------------- From:Ger Hooton Scoil Chro? ?osa Blarney [ghooton at scins.ie ] To:Robert Moskowitz [rgm at htt-consult.com ], chaouche yacine [yacinechaouche at yahoo.com ], dovecot at dovecot.org Date:Tue, 21 Mar 2017 14:05:17

Hi everyone Has anybody ever come across this, I want it to join automatically the recording files for me but it creates the wav files as I expect but it doesn't join them sadly, so eg: ls 1250623104.10-in.wav 1250628672.23-in.wav 1250630411.30-in.wav 1250623104.10-out.wav 1250628672.23-out.wav 1250630411.30-out.wav Here is my queues.conf snippet [testQ]

dovecot-v1.0-alpha build failed for Solaris 11 (OpenSolaris Nevada). The problematic line is in socket.c line 228. The fix should be to change SOL_TCP to IPPROTO_TCP found in netinet/in.h. This change should work universally on all platforms. Gary

I am trying to move from IAX2 to SIP for voipbuster, moving at the same time to sip1.voipbuster.com. When I try calling out, I see that there is SIP exchange, and in many cases also RTP data being exchanged. Hover in a very large number of attempts the connection is not established. Half of the time there is no RTP, the rest of the time there *is* RTP data flowing in two ways, but no ringtone is

On Mon, 5 Jul 2021 at 07:15, Hooton, Gerard <g.hooton at ucc.ie> wrote: > > Hi All, > I am having problems with a kickstart install of CentOS 8 > When I try to do a completely automated install using PXE/UEFI it get to the point where it reads the kickstart config file. > Then I see the following message > "kickstart install Started cancel waiting for multipath

...d+NKs4k>: Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x8e09e) [0x7efd1d3a309e] -> /usr/lib/dovecot/libdovecot.so.0(+0x8e18c) [0x7efd1d3a318c] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7efd1d34169e] -> dovecot/imap [hildeb 141.42.206.36 UID FETCH - 8192 bytes waiting corked](+0x1ad42) [0x55649b35cd42] -> dovecot/imap [hildeb 141.42.206.36 UID FETCH - 8192 bytes waiting corked](client_output+0x118) [0x55649b35ce68] -> /usr/lib/dovecot/libdovecot.so.0(+0xaf370) [0x7efd1d3c4370] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x4c) [0x7efd1d3b715c] ->...

Hello all, I am using Samba version 3.2.5 configured for Windows Domain login. It was working fine until I moved over to ldapsam. Now when I login to the XP client I don't see the logon drive (X: in my case) Any debug tips? //Ger -- Gerard Hooton Systems Administrator Blarney Boy's National School, Blarney. Co. Cork

The following is a message to be sent to the President of the United States of America. Although we may not be able to do a great deal from where we are, but for the people of America just knowing we care and feel their sadness will help. Please put your name on the following list and send it to all you know and who care. If you are the 100th name and every 100th there on could you please also

Hi everybody I have a logic question that is confusing me. ifTime(00:00-12:00|*|*|*) { Playback(welcome-morning); } else { ifTime(12:00-18:00|*|*|*) { Playback(welcome-afternoon); } else { Playback(welcome-evening); }

Hi All, I cannot get the sieve_before to work. I have dovecot & sieve installed on Debian 7 as follows /etc/dovecot/conf.d/90-sieve.conf : plugin { # The path to the user's main active script. If ManageSieve is used, this the # location of the symbolic link controlled by ManageSieve. sieve = ~/.dovecot.sieve # The default Sieve script when the user has none. This is a path to a

This time around, the numbers are indeed looking better than in v1; and I like the interface better. Eric Blake (2): server: Prefer send() over write() server: Group related transmission send()s server/internal.h | 7 +++- server/connections.c | 51 +++++++++++++++++++++++++--- server/crypto.c | 11 ++++--

On Fri, Mar 24, 2023 at 02:41:20PM -0500, Eric Blake wrote: > On Fri, Mar 24, 2023 at 11:47:20AM +0100, Florian Westphal wrote: > > qemu-nbd doesn't set TCP_NODELAY on the tcp socket. Replying to myself, WHY aren't we setting TCP_NODELAY on the socket? > > And surprisingly, qemu IS using corking on the client side: >

I'm a bit too busy nowadays because of school so I haven't had time to look at everyone's bug reports and some other mails. They're still marked as unread in my mailbox, so hopefully I'll get to them soon. And I don't mind you resend them if I don't answer in a few weeks :) Changes: - Fixed maildir syncing errors about wrong UIDs - Maildir was re-read all the time,

Hi All, I am having problems with a kickstart install of CentOS 8 When I try to do a completely automated install using PXE/UEFI it get to the point where it reads the kickstart config file. Then I see the following message "kickstart install Started cancel waiting for multipath siblings for nvme0n1" This is what I have in the kickstart file # Clear the Master Boot Record zerombr #

> As a streaming server, it's fairly crucial for icecast to > send out data with as low a delay as possible (many clients > don't care, but some do). That's why we use TCP_NODELAY - we > actually WANT to send out data as soon as we can. Nagle is inherently unsuited for streams. NODELAY was (imho) ment for connections for which Nagle isn't sufficient and CORK is not