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authorSteve French <sfrench@us.ibm.com>2005-10-10 10:34:22 -0700
committerSteve French <sfrench@us.ibm.com>2005-10-10 10:34:22 -0700
commit68058e757573d4e81550e74c5a03a29a29069ce7 (patch)
treed8c6c318e2e486ae707a22915983afd512f38b51 /fs/cifs/transport.c
parent131afd0b748e382c3a00355d3fa245801f929298 (diff)
downloadblackbird-op-linux-68058e757573d4e81550e74c5a03a29a29069ce7.tar.gz
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[CIFS] Reduce CIFS tcp congestion timeout (it was too long) and backoff
ever longer amounts (up to 15 seconds). This improves performance especially when using large wsize. Signed-off-by: Steve French (sfrench@us.ibm.com)
Diffstat (limited to 'fs/cifs/transport.c')
-rw-r--r--fs/cifs/transport.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 893a6fef9853..d9b11690746d 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -157,14 +157,14 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
/* smaller timeout here than send2 since smaller size */
/* Although it may not be required, this also is smaller
oplock break time */
- if(i > 30) {
+ if(i > 12) {
cERROR(1,
- ("sends on sock %p stuck for 15 seconds",
+ ("sends on sock %p stuck for 7 seconds",
ssocket));
rc = -EAGAIN;
break;
}
- msleep(500);
+ msleep(1 << i);
continue;
}
if (rc < 0)
@@ -224,14 +224,14 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
n_vec - first_vec, total_len);
if ((rc == -ENOSPC) || (rc == -EAGAIN)) {
i++;
- if(i > 40) {
+ if(i >= 14) {
cERROR(1,
- ("sends on sock %p stuck for 20 seconds",
+ ("sends on sock %p stuck for 15 seconds",
ssocket));
rc = -EAGAIN;
break;
}
- msleep(500);
+ msleep(1 << i);
continue;
}
if (rc < 0)
@@ -249,6 +249,7 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
continue;
}
total_len -= rc;
+ /* the line below resets i */
for (i = first_vec; i < n_vec; i++) {
if (iov[i].iov_len) {
if (rc > iov[i].iov_len) {
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